| 1. |
- Calabon, Mark Seasat, et al.
(author)
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Phylogenetic assessment and taxonomic revision of Halobyssothecium and Lentithecium (Lentitheciaceae, Pleosporales)
- 2021
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In: Mycological progress. - : Springer Nature. - 1617-416X .- 1861-8952. ; 20:5, s. 701-720
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Journal article (peer-reviewed)abstract
- Our studies on lignicolous aquatic fungi in Thailand, Sweden, and the UK resulted in the collection of three new Halobyssothecium species (H. bambusicola, H. phragmitis, H. versicolor) assigned to Lentitheciaceae (Pleosporales, Dothideomycetes). Multi-loci phylogenetic analyses of the combined large subunit, small subunit, internal transcribed spacers of ribosomal DNA, and the translation elongation factor 1-alpha sequence data enabled a revision of the taxa assigned to Lentithecium and the transfer of L. cangshanense, L. carbonneanum, L. kunmingense, L. unicellulare, and L. voraginesporum to Halobyssothecium. Collection of an asexual morph of L. lineare and phylogenetic analysis confirmed its taxonomic placement in Keissleriella. Detailed descriptions and illustrations of H. bambusicola, H. phragmitis, and H. versicolor are provided.
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| 2. |
- Gilbert Temu, Stella, et al.
(author)
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Crustose Calicioid Lichens and Fungi in Mountain Cloud Forests of Tanzania
- 2019
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In: Microorganisms. - : MDPI AG. - 2076-2607. ; 7:11
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Journal article (peer-reviewed)abstract
- A total of 26 crustose calicioid lichens and fungi were found in Tanzania. Most of them belong to a group of species with wide distributions in cool areas of both hemispheres and occasional occurrence in high mountains at low latitudes. In Tanzania calicioids mainly occur in the middle and upper forest zones and their niches are found on the bark of old trees and on lignum, most of them restricted to mountain cloud forests. Calicioids are rare and often red-listed, and are also bioindicators of long forest continuity. Consequently, they form an important biota in mountain cloud forests and deserve attention in the context of preserving biodiversity and developing conservation policies. One new species, Chaenothecopsis kilimanjaroensis, is described. Chaenotheca hispidula and Pyrgillus cambodiensis are reported as new to Africa and Calicium lenticulare and Chaenothecopsis debilis are reported as new to Tanzania.
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| 3. |
- Gilbert Temu, Stella, 1987-
(author)
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Lichens in Mountain Rainforests of Tanzania : Studies of Usnea and Calicioids
- 2020
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Doctoral thesis (other academic/artistic)abstract
- Lichens occur in various habitats. They often have narrow niches and are sensitive to environmental changes leading to their use as bioindicators of environmental disturbances and conditions; air and heavy metal pollution, agricultural toxins, assessing forest continuity and drought tolerance. Lichenological studies in Africa, particularly in Tanzania, have been scarce, and those available have been mainly based on morphology and chemistry data. The aim of my doctorate was to investigate lichens, in particular Usnea and calicioid lichens in mountain rain forests in Tanzania, using both traditional and molecular approaches.Paper I and II explored Usnea subgenus Eumitria. In paper I, molecular, morphological and chemical methods were utilized. A phylogeny of Eumitria from Tanzania based on a four-markers data set supported monophyly of Eumitria, where sixty-two new sequences were reported. In paper II additional specimens of the Usnea pectinata aggregate from Tanzania and São Tomé and Príncipe were studied, and forty-two specimens were examined by an integrative approach (molecular, morphological, chemical data). The U. pectinata aggregate was monophyletic, containing several subclades, some characterized morphologically and chemically. Paper III and IV focused on calicioids. Paper III summed up earlier information on Tanzanian calicioids along with new discoveries (twenty-six species), with notes on their habitats and distributions. Chaenothecopsis kilimanjaroensis was described as new, Chaenotheca hispidula and Pyrgillus cambodiensis new to Africa: Calicium lenticulare and Chaenothecopsis debilis new to Tanzania. In paper IV, Coniocybe was revised and emended to include along with its type C. furfuracea, also C. brachypoda and C. confusa. A three marker phylogeny was used to infer its phylogenetic position and Coniocybe eufuracea was described as new.This thesis contributes to the knowledge of the lichens in Tanzania and Africa at large by building capacity in lichenology and its applications for future research. It provided integrated data for Usnea species from Africa, adding to the knowledge of this difficult group (only two sequences of Usnea from Africa have previously been published). It provided new information on calicioid lichens in Tanzania and by uncovering a rich diversity in both of the groups studied provided a foundation for further investigations of lichen biodiversity.
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| 4. |
- Hyde, K. D., et al.
(author)
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Global consortium for the classification of fungi and fungus-like taxa
- 2023
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In: MYCOSPHERE. - : Mushroom Research Foundation. - 2077-7000 .- 2077-7019. ; 14:1, s. 1960-2012
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Journal article (peer-reviewed)abstract
- The Global Consortium for the Classification of Fungi and fungus-like taxa is an international initiative of more than 550 mycologists to develop an electronic structure for the classification of these organisms. The members of the Consortium originate from 55 countries/regions worldwide, from a wide range of disciplines, and include senior, mid-career and early-career mycologists and plant pathologists. The Consortium will publish a biannual update of the Outline of Fungi and fungus-like taxa, to act as an international scheme for other scientists. Notes on all newly published taxa at or above the level of species will be prepared and published online on the Outline of Fungi website (https://www.outlineoffungi.org/), and these will be finally published in the biannual edition of the Outline of Fungi and fungus-like taxa. Comments on recent important taxonomic opinions on controversial topics will be included in the biannual outline. For example, 'to promote a more stable taxonomy in Fusarium given the divergences over its generic delimitation', or 'are there too many genera in the Boletales?' and even more importantly, 'what should be done with the tremendously diverse 'dark fungal taxa?' There are undeniable differences in mycologists' perceptions and opinions regarding species classification as well as the establishment of new species. Given the pluralistic nature of fungal taxonomy and its implications for species concepts and the nature of species, this consortium aims to provide a platform to better refine and stabilise fungal classification, taking into consideration views from different parties. In the future, a confidential voting system will be set up to gauge the opinions of all mycologists in the Consortium on important topics. The results of such surveys will be presented to the International Commission on the Taxonomy of Fungi (ICTF) and the Nomenclature Committee for Fungi (NCF) with opinions and percentages of votes for and against. Criticisms based on scientific evidence with regards to nomenclature, classifications, and taxonomic concepts will be welcomed, and any recommendations on specific taxonomic issues will also be encouraged; however, we will encourage professionally and ethically responsible criticisms of others' work. This biannual ongoing project will provide an outlet for advances in various topics of fungal classification, nomenclature, and taxonomic concepts and lead to a community-agreed classification scheme for the fungi and fungus-like taxa. Interested parties should contact the lead author if they would like to be involved in future outlines.
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| 5. |
- Jones, Gareth, et al.
(author)
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Phylogeny of new marine Dothideomycetes and Sordariomycetes from mangroves and deep-sea sediments
- 2020
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In: Botanica Marina. - : Walter de Gruyter GmbH. - 0006-8055 .- 1437-4323. ; 63:2, s. 155-181
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Journal article (peer-reviewed)abstract
- This paper documents six new saprobic marine fungi and one new genus based on morphology and multi-gene phylogenies. Three Dothideomycetes, and members of the Pleosporales, are introduced: Pseudo-massariosphaeria triseptata sp. nov. was recognized as a mangrove species in Amniculicolaceae, and Salsuginea phoenicis sp. nov. was discovered as a second member of Salsugineaceae. A new genus Raghukumaria with Raghukumaria keshaphalae sp. nov., recovered from mangroves, is phylogenetically sister to Halomassarina and nests in the Trematosphaeriaceae. Three new species are referred to the Sordariomycetes: Coniochaeta marina (Coniochaetales, Coniochaetaceae) on driftwood; Fusicolla bharatavarshae (Hypocreales, Nectriaceae) is introduced with asexual and sexual morphs, on decayed mangrove wood of Avicennia marina; and Fusarium sedimenticola (Hypocreales, Nectriaceae) is new to the Fusarium solani species complex (FSSC) from deep-sea sediment.
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| 6. |
- Pang, Ka-Lai, et al.
(author)
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Recent progress in marine mycological research in different countries, and prospects for future developments worldwide
- 2023
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In: Botanica Marina. - : Walter de Gruyter. - 0006-8055 .- 1437-4323. ; 66:4, s. 239-269
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Journal article (peer-reviewed)abstract
- Early research on marine fungi was mostly descriptive, with an emphasis on their diversity and taxonomy, especially of those collected at rocky shores on seaweeds and driftwood. Subsequently, further substrata (e.g. salt marsh grasses, marine animals, seagrasses, sea foam, seawater, sediment) and habitats (coral reefs, deep-sea, hydrothermal vents, mangroves, sandy beaches, salt marshes) were explored for marine fungi. In parallel, research areas have broadened from micro-morphology to ultrastructure, ecophysiology, molecular phylogenetics, biogeography, biodeterioration, biodegradation, bioprospecting, genomics, proteomics, transcriptomics and metabolomics. Although marine fungi only constitute a small fraction of the global mycota, new species of marine fungi continue to be described from new hosts/substrata of unexplored locations/habitats, and novel bioactive metabolites have been discovered in the last two decades, warranting a greater collaborative research effort. Marine fungi of Africa, the Americas and Australasia are under-explored, while marine Chytridiomycota and allied taxa, fungi associated with marine animals, the functional roles of fungi in the sea, and the impacts of climate change on marine fungi are some of the topics needing more attention. In this article, currently active marine mycologists from different countries have written on the history and current state of marine fungal research in individual countries highlighting their strength in the subject, and this represents a first step towards a collaborative inter- and transdisciplinary research strategy.
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| 7. |
- Temu, Stella, et al.
(author)
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Coniocybe Ach., Revision of a Genus of Calicioid Lichens
-
Other publication (other academic/artistic)abstract
- Coniocybe Ach. is revised on the basis of molecular studies and morphological features. Coniocybe is separate from other species of Chaenotheca s. lat. A total of 51 new sequences (13 ITS, 24 nuLSU and 14 RPB1) for Chaenotheca s. lat. were produced. Three markers (ITS, nuLSU and RPB1) were used to infer its phylogenetic position, and it formed a monophyletic clade in Chaenotheca s. lat. The genus was emended and found to include, apart for its type C. furfuracea, also C. brachypoda and C. confusa along with a newly described species, C. eufuracea.
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| 8. |
- Temu, Stella G., et al.
(author)
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Coniocybe Ach. revisited
- 2024
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In: Journal of Fungi. - : MDPI. - 2309-608X. ; 10:5
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Journal article (peer-reviewed)abstract
- Calicioids form a research field that has encompassed ascomycetous fungi with stalked ascomata similar to those of the lichen genus Calicium. Early generic circumscriptions of calicioid lichens and fungi were mainly based on morphological and secondary chemistry information. After the introduction of molecular data, taxonomy in the group has been reconsidered. Here, based on a broad geographical sampling, Coniocybe Ach. was revised using molecular and morphological features. Three loci (ITS, LSU and rpb1) were compared to infer its phylogenetic position, and a total of 52 new sequences (14 ITS, 24 LSU and 14 rpb1) were produced. Apart from its type C. furfuracea, Coniocybe was revised and emended to also include C. brachypoda and C. confusa. In addition, a new species, Coniocybe eufuracea, was described, and a key to the species of Coniocybe was provided.
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| 9. |
- Temu, Stella G., et al.
(author)
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Molecular, morphological and chemical variation of the Usnea pectinata aggregate from Tanzania, São Tomé and Príncipe
- 2022
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In: The Lichenologist. - : Cambridge University Press. - 0024-2829 .- 1096-1135. ; 54:5, s. 291-298
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Journal article (peer-reviewed)abstract
- This study investigated the molecular, chemical and morphological variation in the Usnea pectinata aggregate using 42 specimens, 22 from Tanzania and 20 from São Tomé and Príncipe. A total of 31 sequences (13 ITS, 13 nuLSU and 5 RPB1) were generated. The results are presented in two phylogenies: first a three-markers ‘backbone’ phylogeny for the U. pectinata aggregate, where six distinct, strongly supported subclades indicate considerable genetic variation in the dataset; and second, an ITS phylogeny with 47 terminals along with a mapping of morphological and chemistry data. Several well-supported monophyletic clades were recovered in both phylogenies and these may well represent separate species in the complex referred to here as the U. pectinata aggregate. Three morphotypes characterized by axis pigmentation and four by branch shape were noted. Six chemotypes were observed.
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| 10. |
- Temu, Stella, et al.
(author)
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Phylogeny of the subgenus Eumitria in Tanzania
- 2019
-
In: Mycology. - : Informa UK Limited. - 2150-1203 .- 2150-1211. ; 10:4, s. 250-260
-
Journal article (peer-reviewed)abstract
- Several Usnea species in subgenus Eumitria (Parmeliaceae, lichenized Ascomycota) have been described from East Africa in the past decades. These have been based on morphology and chemistry data while molecular studies remain very limited. In this paper we are for the first time publishing phylogenetic analyses along with morphological and chemical data for Eumitria. A total of 62 new sequences of Eumitria (26 ITS, 20 nuLSU, 6 MCM7, 10 RPB1) were generated in this study. nuLSU, MCM7 and RPB1 sequences are here for the first time reported for U. baileyi. A phylogeny of subgenus Eumitria from Tanzania based on Bayesian and maximum likelihood analyses of a concatenated four-loci data set is presented, confirming the monophyly of Eumitria. Further, secondary chemistry and variation in characters, such as the pigmentation of the central axis and branch shape were investigated.
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| 11. |
- Temu, Stella, et al.
(author)
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The Usnea pectinata aggregate, Molecular, Morphological and Chemical Variation
-
Other publication (other academic/artistic)abstract
- This study investigated the molecular, chemical and morphological variation of Usnea pectinata aggregate, where 42 specimens were studied; 22 from Tanzania and 20 from São Tomé and Príncipe. A total of 51 sequences (32 ITS , 14 nuLSU and 5 RPB1) of U. pectinata aggregate were produced. The results are presented in two phylogenies; first a three markers phylogeny, and secondly an ITS-phylogeny along with morphology and chemistry data. Several well supported monophyletic clades were recovered in both phylogenies. Two morphotypes defined by axis pigmentation and four defined by branch shapes were noted. Six chemotypes were observed.
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| 12. |
- Tibell, Leif, et al.
(author)
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Chaenotheca biesboschii a new calicioid lichen from willow forests in the Netherlands
- 2019
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In: The Lichenologist. - 0024-2829 .- 1096-1135. ; 51:2, s. 123-135
-
Journal article (peer-reviewed)abstract
- A new species of Chaenotheca, C. biesboschii, has been found in the freshwater tidal area of the Biesbosch in the Netherlands, a national park well known for harbouring several rare and threatened mosses and lichens. A phylogenetic analysis of the ITS region revealed some strongly supported infrageneric clades in Chaenotheca which were given informal names, and some were assigned provisional names in anticipation of generic recognition. The analysis also showed that the new species differed in the sequenced region from other European Chaenotheca species. Chaenotheca biesboschii might be mistaken for C. gracillima but, in addition to a considerable difference in the ITS region, it also differs from this species in morphology. It is also similar to C. servitii but again differs in morphology. Chaenotheca biesboschii inhabits decorticated wood in the oldest stages of forest development of abandoned willow coppices. In 2016 and 2017 a fairly large population was found in an area comprising several square kilometres. In the Biesbosch area, extensive woodlands have developed only since the 1950s and therefore C. biesboschii might have been recently established in the area, possibly following climatic warming. The new species is characterized by having an immersed, glaucous green thallus; apothecia 0 center dot 9-1 center dot 4 mm high; capitulum on the lower side when young with a ring-like thickening covered by a yellow pruina; when mature with a rusty brown pruina on the capitulum and upper part of stalk; spherical spores, 3 center dot 5-5 center dot 5 mu m diam., ornamented by irregular cracks, medium brown; photobiont Stichococcus. A key to the European species of Chaenotheca is provided.
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| 13. |
- Tibell, Sanja, et al.
(author)
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A conspectus of the filamentous marine fungi of Sweden
- 2020
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In: Botanica Marina. - : Walter de Gruyter GmbH. - 0006-8055 .- 1437-4323. ; 63:2, s. 141-153
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Journal article (peer-reviewed)abstract
- Marine filamentous fungi have been little studied in Sweden, which is remarkable given the depth and width of mycological studies in the country since the time of Elias Fries. Seventy-four marine fungi are listed for Sweden based on historical records and recent collections, of which 16 are new records for the country. New records for the country are based on morphological identification of species mainly from marine wood, and most of them from the Swedish West Coast. In some instances, the identifications have been made by comparisons of sequences obtained from cultures with reference sequences in GenBank. Corollospora angusta, Corollospora filiformis, and Corollospora pulchella, previously known from tropical/subtropical areas, are recorded for the first time for Sweden. The arctic Havispora longyearbyensis was also found. Kalmusia longispora and Neocamarosporium calvescens were reported for the first time from marine habitats.
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| 14. |
- Tibell, Sanja, et al.
(author)
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Atla
- 2017
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In: Nordic Lichen Flora Vol. 6. - : Museum of Evolution, Uppsala University and Naturcentrum AB on behalf of Nordic Lichen Society. - 9789185221332 ; , s. 10-15
-
Book chapter (peer-reviewed)
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| 15. |
- Tibell, Sanja, et al.
(author)
-
Marine fungi of the Baltic Sea
- 2020
-
In: Mycology. - : Informa UK Limited. - 2150-1203 .- 2150-1211. ; 11:3, s. 195-213
-
Journal article (peer-reviewed)abstract
- Vast parts of the Baltic Sea have been mycologically neglected and are still awaiting exploration. Here we summarise earlier records of marine fungi from the Baltic, supplementing them with discoveries from fieldwork in Sweden in 2019. Although marine fungal diversity is clearly attenuated in the brackish water of the Baltic Sea, a substantial number has still been discovered. Here we list 77 species from the Baltic Sea, whereas after a critical assessment a further 18 species have been excluded as records of marine fungi. The species have mainly been identified by their morphological features, supplemented by DNA-based diagnostics. Most of the species have their main distributions in temperate areas of the Atlantic Ocean. Some of the Baltic species discovered here represent far disjunctions to tropical waters while only a very few are until now only recorded for the Baltic Sea. In this paper two species belong in Basidiomycota, while the most ascomyceteous speciose classes are Sordariomycetes (with 42 species) and Dothideomycetes (24). Halosphaeriaceae is the most speciose family in marine habitats, as also in the Baltic Sea, represented here by 29 species. Three species are new to Europe, and in addition 13 to the Baltic Sea and 13 to Sweden.
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| 16. |
- Tibell, Sanja, et al.
(author)
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Polyblastia
- 2017. - 1
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In: Nordic Lichen Flora Vol. 6. - : Museum of Evolution Uppsala University, and Naturcentrum AB on behalf of Nordic Lichen Society. - 9789185221332 ; , s. 35-52
-
Book chapter (peer-reviewed)
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| 17. |
- Tibell, Sanja, et al.
(author)
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Two new species of Atla (Verrucariaceae)
- 2015
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In: The Lichenologist. - 0024-2829 .- 1096-1135. ; 47:2, s. 93-98
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Journal article (peer-reviewed)abstract
- Two new species in the lichen genus Atla, A. alaskana and A. recondita, are described. The ITS rDNA region is used for their molecular characterization. Morphologically, Atla alaskana is characterized by its rather thick and well-developed whitish grey thallus, and the rather large perithecia having a thalline excipulum. The presence of a thalline excipulum renders it similar to Sporodictyon species; however, in A. alaskana a distinct zone around the ostiolum is without a thallus and covered only by a thick white pruina. Atla recondita has a thin olivaceous brown thallus and moderately sized, emerging perithecia. It is not possible to identify this species unequivocally as an Atla species only by morphology, and it might well be mistaken for a Polyblastia. A key to all six Atla species, including the two new species, is provided.
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| 18. |
- Wanasinghe, Dhanushka N., et al.
(author)
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Fungal diversity notes 709–839 : taxonomic and phylogenetic contributions to fungal taxa with an emphasis on fungi on Rosaceae
- 2018
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In: Fungal diversity. - : Springer Science and Business Media LLC. - 1560-2745 .- 1878-9129. ; 89:1, s. 1-236
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Journal article (peer-reviewed)abstract
- This paper is the seventh in the Fungal Diversity Notes series, where 131 taxa accommodated in 28 families are mainly described from Rosa (Rosaceae) and a few other hosts. Novel fungal taxa are described in the present study, including 17 new genera, 93 new species, four combinations, a sexual record for a species and new host records for 16 species. Bhatiellae, Cycasicola, Dactylidina, Embarria, Hawksworthiana, Italica, Melanocucurbitaria, Melanodiplodia, Monoseptella, Uzbekistanica, Neoconiothyrium, Neopaucispora, Pararoussoella, Paraxylaria, Marjia, Sporormurispora and Xenomassariosphaeria are introduced as new ascomycete genera. We also introduce the new species Absidia jindoensis, Alternaria doliconidium, A. hampshirensis, Angustimassarina rosarum, Astragalicola vasilyevae, Backusella locustae, Bartalinia rosicola, Bhatiellae rosae, Broomella rosae, Castanediella camelliae, Coelodictyosporium rosarum, Comoclathris rosae, C. rosarum, Comoclathris rosigena, Coniochaeta baysunika, C. rosae, Cycasicola goaensis, Dactylidina shoemakeri, Dematiopleospora donetzica, D. rosicola, D. salsolae, Diaporthe rosae, D. rosicola, Endoconidioma rosae-hissaricae, Epicoccum rosae, Hawksworthiana clematidicola, H. lonicerae, Italica achilleae, Keissleriella phragmiticola, K. rosacearum, K. rosae, K. rosarum, Lophiostoma rosae, Marjia tianschanica, M. uzbekistanica, Melanocucurbitaria uzbekistanica, Melanodiplodia tianschanica, Monoseptella rosae, Mucor fluvius, Muriformistrickeria rosae, Murilentithecium rosae, Neoascochyta rosicola, Neoconiothyrium rosae, Neopaucispora rosaecae, Neosetophoma rosarum, N. rosae, N. rosigena, Neostagonospora artemisiae, Ophiobolus artemisiicola, Paraconiothyrium rosae, Paraphaeosphaeria rosae, P. rosicola, Pararoussoella rosarum, Parathyridaria rosae, Paraxylaria rosacearum, Penicillium acidum, P. aquaticum, Phragmocamarosporium rosae, Pleospora rosae, P. rosae-caninae, Poaceicola agrostina, P. arundinicola, P. rosae, Populocrescentia ammophilae, P. rosae, Pseudocamarosporium pteleae, P. ulmi-minoris, Pseudocercospora rosae, Pseudopithomyces rosae, Pseudostrickeria rosae, Sclerostagonospora lathyri, S. rosae, S. rosicola, Seimatosporium rosigenum, S. rosicola, Seiridium rosarum, Setoseptoria arundelensis, S. englandensis, S. lulworthcovensis, Sigarispora agrostidis, S. caryophyllacearum, S. junci, S. medicaginicola, S. rosicola, S. scrophulariae, S. thymi, Sporormurispora atraphaxidis, S. pruni, Suttonomyces rosae, Umbelopsis sinsidoensis, Uzbekistanica rosae-hissaricae, U. yakutkhanika, Wojnowicia rosicola, Xenomassariosphaeria rosae. New host records are provided for Amandinea punctata, Angustimassarina quercicola, Diaporthe rhusicola, D. eres, D. foeniculina, D. rudis, Diplodia seriata, Dothiorella iberica, Lasiodiplodia theobromae, Lecidella elaeochroma, Muriformistrickeria rubi, Neofusicoccum australe, Paraphaeosphaeria michotii, Pleurophoma pleurospora, Sigarispora caulium and Teichospora rubriostiolata. The new combinations are Dactylidina dactylidis (=Allophaeosphaeria dactylidis), Embarria clematidis (=Allophaeosphaeria clematidis), Hawksworthiana alliariae (=Dematiopleospora alliariae) and Italica luzulae (=Dematiopleospora luzulae).This study also provides some insights into the diversity of fungi on Rosa species and especially those on Rosa spines that resulted in the characterisation of eight new genera, 45 new species, and nine new host records. We also collected taxa from Rosa stems and there was 31% (20/65) overlap with taxa found on stems with that on spines.Because of the limited and non-targeted sampling for comparison with collections from spines and stems of the same host and location, it is not possible to say that the fungi on spines of Rosa differ from those on stems. The study however, does illustrate how spines are interesting substrates with high fungal biodiversity. This may be because of their hard structure resulting in slow decay and hence are suitable substrates leading to fungal colonisation. All data presented herein are based on morphological examination of specimens, coupled with phylogenetic sequence data to better integrate taxa into appropriate taxonomic ranks and infer their evolutionary relationships.
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| 19. |
- Zamora, Juan Carlos, et al.
(author)
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Considerations and consequences of allowing DNA sequence data as types of fungal taxa
- 2018
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In: IMA Fungus. - : INT MYCOLOGICAL ASSOC. - 2210-6340 .- 2210-6359. ; 9:1, s. 167-185
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Journal article (peer-reviewed)abstract
- Nomenclatural type definitions are one of the most important concepts in biological nomenclature. Being physical objects that can be re-studied by other researchers, types permanently link taxonomy (an artificial agreement to classify biological diversity) with nomenclature (an artificial agreement to name biological diversity). Two proposals to amend the International Code of Nomenclature for algae, fungi, and plants (ICN), allowing DNA sequences alone (of any region and extent) to serve as types of taxon names for voucherless fungi (mainly putative taxa from environmental DNA sequences), have been submitted to be voted on at the 11th International Mycological Congress (Puerto Rico, July 2018). We consider various genetic processes affecting the distribution of alleles among taxa and find that alleles may not consistently and uniquely represent the species within which they are contained. Should the proposals be accepted, the meaning of nomenclatural types would change in a fundamental way from physical objects as sources of data to the data themselves. Such changes are conducive to irreproducible science, the potential typification on artefactual data, and massive creation of names with low information content, ultimately causing nomenclatural instability and unnecessary work for future researchers that would stall future explorations of fungal diversity. We conclude that the acceptance of DNA sequences alone as types of names of taxa, under the terms used in the current proposals, is unnecessary and would not solve the problem of naming putative taxa known only from DNA sequences in a scientifically defensible way. As an alternative, we highlight the use of formulas for naming putative taxa (candidate taxa) that do not require any modification of the ICN.
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| 20. |
- Cabric, Sanja, et al.
(author)
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Islet Surface Heparinization Prevents the Instant-Blood Mediated Inflammatory Reaction in Islet Transplantation
- 2007
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In: Diabetes. - : American Diabetes Association. - 0012-1797 .- 1939-327X. ; 56:8, s. 2008-2015
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Journal article (peer-reviewed)abstract
- OBJECTIVE—In clinical islet transplantation, the instant blood-mediated inflammatory reaction (IBMIR) is a major factor contributing to the poor initial engraftment of the islets. This reaction is triggered by tissue factor and monocyte chemoattractant protein (MCP)-1, expressed by the transplanted pancreatic islets when the islets come in contact with blood in the portal vein. All currently identified systemic inhibitors of the IBMIR are associated with a significantly increased risk of bleeding or other side effects. To avoid systemic treatment, the aim of the present study was to render the islet graft blood biocompatible by applying a continuous heparin coating to the islet surface.RESEARCH DESIGN AND METHODS—A biotin/avidin technique was used to conjugate preformed heparin complexes to the surface of pancreatic islets. This endothelial-like coating was achieved by conjugating barely 40 IU heparin per full-size clinical islet transplant.RESULTS—Both in an in vitro loop model and in an allogeneic porcine model of clinical islet transplantation, this heparin coating provided protection against the IBMIR. Culturing heparinized islets for 24 h did not affect insulin release after glucose challenge, and heparin-coated islets cured diabetic mice in a manner similar to untreated islets.CONCLUSIONS—This novel pretreatment procedure prevents intraportal thrombosis and efficiently inhibits the IBMIR without increasing the bleeding risk and, unlike other pretreatment procedures (e.g., gene therapy), without inducing acute or chronic toxicity in the islets.
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| 21. |
- Gueidan, Cecile, et al.
(author)
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Generic classification of the Verrucariaceae (Ascomycota) based on molecular and morphological evidence : recent progress and remaining challenges
- 2009
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In: Taxon. - 0040-0262 .- 1996-8175. ; 58:1, s. 184-208
-
Research review (peer-reviewed)abstract
- Recent molecular phylogenetic analyses and morphological Studies have shown that it is necessary to revise the present morphology-based generic delineation of the lichen family Verrucariaceae in order to account for evolutionary relatedness between species. Consequently, several genera were recently described or resurrected, and others were re-circumscribed. As an additional step toward this generic revision, three new genera (Hydropunctaria, Parabagliettoa, Wahlenbergiella) and eleven new combinations are proposed here. A summary of the Current taxonomic and morphological circumscription of all genera investigated so far is also presented. Several monophyletic groups are identified for which further taxonomical changes will be required, but for which taxon and gene sampling is presently viewed as insufficient. Clear morphological synapomorphies were found to be rare for newly delimited genera. In some cases (reduced morphology or plesiomorphism), even the combinations of slightly homoplasious phenotypic characters do not allow a clear morphological generic circumscription. Molecular features are envisioned as characters for delimiting these taxa.
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| 22. |
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| 23. |
- Hussein, Juma, 1986-, et al.
(author)
-
Chemical composition of the medicinal mushroom Kusaghiporia usambarensis
-
Other publication (other academic/artistic)abstract
- The mushroom Kusaghiporia usambarensis was recently described as a new species and the single member of a new genus. It appears endemic to Tanzania. The mushroom forms large, conspicuous fruiting bodies with an unusually high radial growth rate and an observed ability to attract insects. The mushroom is used by the local community both for food and in traditional medicine. In order to gain insight into both basic biology and the traditional use of this mushroom, we here report the first analyses of its chemical composition. A dichloromethane extract was prepared from the dried fruiting body and analysed by nuclear magnetic resonance and gas chromatography coupled to mass spectrometry. This extract of medium polar chemical constituents of Kusaghiporia usambarensis showed a high content of phenolic compounds and esters. The main elements were phenols, which account for ~22%, and esters ~20 %). These two groups of compounds may explain formerly reported antioxidant activity and traditional medicinal use of the mushroom. Revealing the chemistry also shed light on K. usambarensi as a sought-after delicacy: presence of 1-octen-3-one, octanal, 3-octen-2-one contribute to its fruity, cheesy and chicken flavour.
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| 24. |
- Hussein, Juma, 1986-, et al.
(author)
-
Cysteine-rich peptide from the gigantic edible mushroom Kusaghiporia usambarensis (Laetiporaceae)
-
Other publication (other academic/artistic)abstract
- Cysteine-rich peptides are produced by various organisms across all kingdoms and have triggered an interest in isolation of molecules for novel drug development. In this study, we report a novel cysteine-rich peptide, kusaghitide, isolated from the gigantic medicinal mushroom Kusaghiporia usambarensis. It is highly expressed in the K. usambarensis transcriptome and it is the most abundant compound in the methanol-water extract. The 54 amino acid residue long peptide was isolated through aqueous methanol 50% and a sample was reduced, alkylated and cleaved enzymatically. De novo sequencing was done by LC-MS/MS and obtained sequences were used for mining the transcriptome to search for the complete gene. The peptide was recombinantly expressed in One Shot BL21 Star Escherichia coli using lysogenic broth and minimal media. Its 3D NMR structure was determined using 2D and 3D NMR. Three hypothetical protein sequences similar to kusaghitide originate from Laetiporus sulphureus, Wolfiporia cocos and Sparassis crispa with per cent similarity of 76% and 58% and 53% respectively and were found by BLAST search in the NCBI database. Kusaghitide did not inhibit the growth of either Escherichia coli or Staphylococcus aureus. This is first report of a peptide from K. usambarensis in Laetiporaceae.
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| 25. |
- Hussein, Juma Mahmud, 1986-
(author)
-
Polyporoid fungi of Tanzania : Taxonomy, transcriptomics and biochemical analyses of Kusaghiporia usambarensis and Piptoporellus baudonii
- 2020
-
Doctoral thesis (other academic/artistic)abstract
- Polyporoid fungi refers to basidiomycetes with fruiting bodies with the hymenium located to the inner surfaces of pores or narrow tubes. The majority of polyporoids belongs to Polyporales. Most Polyporales are saprobes, but some are plant pathogens. The overall aim of this thesis was to study the taxonomy, systematics and chemistry of the two species Kusaghiporia usambarensis (saprobic) and Piptoporellus baudonii (a plant pathogen) collected from Tanzania, using morphological and molecular approaches, combined with transcriptomics and pharmacognostic investigations.The main contribution of this thesis includes the description a new genus with the new species K. usambarensis from the Usambara Mountains, Tanzania; investigation of the chemical composition of volatile compounds from this medicinal mushroom; isolation and structure determination of a novel and most abundant peptide in K. usambarensis, and further to elucidate the phylogenetic position of Piptoporellus baudonii (formerly known as Laetiporus baudonii) by using a four molecular markers dataset.Paper I was conducted applying a classical taxonomic approach, including both morphological and phylogenetic analyses, to describe a new genus and species K. usambarensis. Paper II, investigated volatiles and volatile derivatives in dichloromethane extracts of K. usambarensis analysed by GC-MS and NMR spectroscopy. The main elements were phenols, and esters, compounds that may explain the formerly reported antioxidant activity and traditional medicinal use of the mushroom. In paper III, screening of peptides in K. usambarensis revealed a novel cysteine-rich peptide, highly expressed at gene level and the most abundant compound in the fruiting body. Combined LC-MS and transcriptome analyses were used to determine the peptide sequence, and subsequently NMR spectroscopy to determine the 3D structure of the novel peptide, kusaghitide. In paper IV molecular techniques were used to elucidate the phylogenetic position of the parasitic Laetiporus baudonii. Phylogenetic analyses of combined 5.8S, nrLSU, nrSSU, and TEF1 gene sequences placed L. baudonii in the genus Piptoporellus, hence the new combination Piptoporellus baudonii was proposed. This thesis has contributed to build capacity in the fields of mycology, systematics and pharmacognosy in order to reinforce ecological knowledge and ethnopharmaceutical research for future drug discovery in Tanzania and Africa at large.
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| 26. |
- Hussein, Juma, 1986-, et al.
(author)
-
Phylogenetic position and taxonomy of Kusaghiporia usambarensis gen. et sp. nov. (Polyporales)
- 2018
-
In: Mycology. - : Taylor & Francis. - 2150-1203 .- 2150-1211.
-
Journal article (peer-reviewed)abstract
- A large polyporoid mushroom from the West Usambara Mountains in North-eastern Tanzania produces dark brown, up to 60-cm large fruiting bodies that at maturity may weigh more than 10 kg. It has a high rate of mycelial growth and regeneration and was found growing on both dry and green leaves of shrubs; attached to the base of living trees, and it was also observed to degrade dead snakes and insects accidentally coming into contact with it. Phylogenetic analyses based on individual and concatenated data sets of nrLSU, nrSSU and the RPB2 and TEF1 genes showed it, together with Laetiporus, Phaeolus, Pycnoporellus and Wolfiporia, to form a monophyletic group in Polyporales. Based on morphological features and molecular data, it is described as Kusaghiporia usambarensis.
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| 27. |
- Nordin, Anders, et al.
(author)
-
Phylogeny and taxonomy of Aspicilia and Megasporaceae
- 2010
-
In: Mycologia. - : Informa UK Limited. - 0027-5514 .- 1557-2536. ; 102:6, s. 1339-1349
-
Journal article (peer-reviewed)abstract
- Phylogenetic analyses based on nuLSU and mtSSU indicate that Megasporaceae is monophyletic. Aspicilia species were distributed among three main well supported groups and one group with low support that included the type species; a division of the family into five genera is proposed. The old names Circinaria and Sagedia are reintroduced for groups not including A. cinerea, the type of Aspicilia. The monotypic Megaspora is closely related to Circinaria, while Lobothallia is the sister group of the other Megasporaceae genera. Aspicilia recedens and A. farinosa are transferred to Lobothallia. Species of the 'Sphaerothallia group' are nested in Circinaria. Aspilidea is not a member of Megasporaceae but seems to be more closely related to Ochrolechiaceae. Aspilidea myrinii is neotypified, and lectotypes are designated for Aspicilia gibbosa, A. leprosescens and Lecanora gibbosula.
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| 28. |
- Savić, Sanja, et al.
(author)
-
Atla, a new genus in the Verrucariaceae (Verrucariales)
- 2008
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In: The Lichenologist. - 0024-2829 .- 1096-1135. ; 40:Part 4, s. 269-282
-
Journal article (peer-reviewed)abstract
- The new genus Atla forms a well-supported clade in a molecular phylogeny based on the ITS1-5.8S-ITS2 and LSU regions of the nuclear ribosomal DNA. The genus has a crustose thallus, a hamathecium at maturity without hyphal elements except for pseudoparaphyses remaining at the ostiolum, and large, muriform spores. Atla wheldonii was previously referred to Polyblastia. Three new species, A. alpina (the type of the new genus), A. palicei and A. praetermissa, are included in the genus and described here as new to science. They were found on calcareous rocks and soil in Northern Scandinavia, A. alpina also occurs in Central Europe, and A. wheldonii likewise in Central Europe, the Pyrenees and in the British Isles. An identification key to the species and a revision of the genus are also provided.
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| 29. |
- Savic, Sanja, et al.
(author)
-
Checklist of the lichens of Serbia
- 2006
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In: Mycologia Balcanica. - 1312-3300. ; 3:2-3, s. 187-215
-
Journal article (peer-reviewed)abstract
- A list of lichenized fungi of Serbia is presented. It summarizes records from 1859, when the first lichens from Serbia were published, until now. It also offers a first attempt to present a complete bibliography of Serbian lichens including all past records. Synonyms relevant for the Serbian records are also included, mainly for the species level.
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| 30. |
- Savić, Sanja, et al.
(author)
-
Molecular phylogeny and systematics of Polyblastia (Verrucariaceae, Eurotiomycetes) and allied genera
- 2008
-
In: Mycological Research. - : Elsevier BV. - 0953-7562 .- 1469-8102. ; 112:Part 11, s. 1307-1318
-
Journal article (peer-reviewed)abstract
- Phylogenetic relationships of the lichen genus Polyblastia and closely related taxa in the family Verrucariaceae (Verrucariales, Chaetothyriomycetidae) were studied. A total of 130 sets of sequences (nuLSU rDNA, nuITS rDNA and RPB1 region A-D), including 129 newly generated sequences, were analysed. Phylogenetic relationships were inferred using a Bayesian approach based on two datasets. A first analysis of a larger, two-locus dataset (nuLSU and RPB1) for 128 members of the Verrucariaceae, confirmed the polyphyly of Polyblastia, Thelidium, Staurothele, and Verrucaria, as currently construed. The second analysis focused on 56 Polyblastia and allied taxa, but using an additional locus (nuITS rDNA) and two closely related outgroup taxa. The latter analysis revealed strongly supported groups, such as Polyblastia s. str., the Thelidium group (a mixture of Polyblastia, Thelidium, Staurothele and Verrucaria species). The genus Sporodictyon, which is here accepted, also accommodates Sporodictyon terrestre comb. nov. Morphological features traditionally used for characterizing Polyblastia, Thelidium, Staurothele and Verrucaria, such as spore septation and colour, occurrence of hymenial photobiont, involucrellum structure, and substrate preference, were found to be only partially consistent within the strongly supported clades, and thus are not always reliable features for characterizing natural groups.
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| 31. |
- Savic, Sanja, et al.
(author)
-
New and interesting lichenized and lichenicolous fungi from Serbia
- 2006
-
In: Mycologia Balcanica. - 1312-3300. ; 3:2-3, s. 99-106
-
Journal article (peer-reviewed)abstract
- A list of lichens from Serbia is presented, comprising species not earlier known from Serbia and species that have been recorded once or a few times only. It also includes a few lichenicolous fungi. The list is based on investigations of material in the lichen collection of the Belgrade Natural History Museum, and material collected by the authors. In all 70 species of lichens and eight lichenicolous fungi are reported from Serbia for the first time. The lichen genera Brodoa, Cornicularia, Hypocenomyce, Lobothallia, Pycnora, Pyrenocollema, Rhizoplaca, Rinodinella, Schaereria, Solenopsora, and Trapelia, and the lichenicolous genera Abrothallus, Carbonea, Cercidospora, Lichenodiplis, Muellerella, Scutula, and Vouxiella are new to Serbia. For 17 lichen species (previously recorded without any locality indication), first localities from Serbia are given. Additional localities are given for 77 species, for which only a few localities have been published.
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| 32. |
- Savić, Sanja, 1963-
(author)
-
Phylogeny and Taxonomy of Polyblastia and allied taxa (Verrucariaceae)
- 2007
-
Doctoral thesis (other academic/artistic)abstract
- Polyblastia A. Massal. is a genus of lichenized fungi belonging to Verrucariaceae (Ascomycota). Traditional classification heavily rested on a few cardinal characters, primarily ascoma structure and spore morphology, but the delimitation of Polyblastia was problematic. Using DNA sequences from nucLSU, and RPB1 the position of the ‘Polyblastia group’, as a strongly supported clade within Verrucariaceae, was confirmed. A three marker phylogeny (including nucITS) based on a wide taxon sampling reveals strongly supported clades within the ‘Polyblastia group’. Thus Polyblastia s.str. is recognized. The phylogeny of the strongly supported Thelidium clade is not completely resolved. In a different clade, Verrucaria rupestris, the type of Verrucaria, is a sister to the Henrica melaspora/H. theleodes clade. Trimmatothele perquisita, the type of Trimmatothele, forms a strongly supported group with a Verrucaria species. The genus Sporodictyon, until recently included in Polyblastia, is resurrected. Species delimitation in Sporodictyon is investigated, and the morphological variation within and between the monophyletic groups is evaluated in an effort to reconcile morphological and molecular data. A taxonomic revision of Sporodictyon, occurring in Northern Europe and the adjacent Arctic is provided, and two new species are described. A comprehensive material is investigated, a key to the species is provided. A generic revision of the family Verrucariaceae, based on recent molecular phylogenetic analyses and previous morphological studies, is offered. Three new genera (Hydropunctaria, Parabagliettoa and Wahlenbergiella) are proposed. Several other monophyletic groups are identified for which the taxon sampling is insufficient for proposing taxonomic changes. The nomenclature of the genera in the family is revised, including the study of type materials and several lectotypifications are suggested. The new genus Atla (Verrucariaceae) is described, and three new species to science, A. alpina, A. palicei and A. praetermissa, are included. An identification key to the species and a revision of the genus is supplied.
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| 33. |
- Savić, Sanja, et al.
(author)
-
Polyblastia in Northern Europe and the adjacent Arctic
- 2012
-
Book (other academic/artistic)abstract
- Polyblastia s.str. (Verrucariaceae, Chaetothyriomycetidae) of Northern Europe and the adjacent Arctic is revised. The morphology and the history of the exploration of Polyblastia s.str. is described. Twenty-five species are recognized, twelve of them being new. A molecular phylogeny of the genus based on the internal transcribed spacers (ITS) of nuclear ribosomal DNA is presented and compared with earlier suggestions on infrageneric classification. Polyblastia s.str. is compared with related and similar genera, and the traditional delimitation of genera inthe Verrucariaceae is discussed. A key to the species is given and the morphology, ecology and distribution of the species are described along with notes on synonymy and nomenclature. Lectotypes of 13 taxa have been designated and comments on additional species frequently referredto Polyblastia in 20:th century lichenological literature from the area have been included.
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| 34. |
- Savić, Sanja, et al.
(author)
-
Taxonomy and species delimitation in Sporodictyon (Verrucariaceae) in Northern Europe and the adjacent Arctic – reconciling molecular and morphological data
- 2009
-
In: Taxon. - 0040-0262 .- 1996-8175. ; 58:2, s. 585-605
-
Journal article (peer-reviewed)abstract
- Morphological variation in Sporodictyon is scrutinized in an effort to reconcile it with monophyletic groups based oil molecular evidence. Molecular data (nucITS, nucLSU, RPBI) are investigated by Bayesian and parsimony phylogenetic analyses, statistical parsiniony, and split decomposition. Morphological variation within and between the monophyletic groups is evaluated. Four monophyletic groups strongly Supported by Molecular data correspond to morphologically well-characterized species. Sporodictyon schaererianum and S. terrestre are morphologically variable, especially with respect to thallus structure. Two distinct subclades are found in both species, but they could, however, not be distinguished morphologically and may be regarded as cryptic species. A combination of ascoma size, spore pigmentation, spore size and thallus structure characterizes the species recognized, whereas thallus thickness, involucrellum thickness and excipulum pigmentation are found to be quite plastic. A taxonomic revision of Sporodictyon Northern Europe and the adjacent Arctic is provided, recognizing five species. Two new species, S. arcticum and S. minutum, are described. The name Polyblastia theleodes has been misapplied for S. schaereriamum. Several taxonomic synonyms are proposed, particularly for S. terrestre, and lectotypes for several species names are designated.
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| 35. |
- Savic, Sanja, et al.
(author)
-
The lichen genus Henrica (Verrucariaceae, Eurotiomycetes) in northern Europe
- 2008
-
In: Nordic Journal of Botany. - : Wiley. - 0107-055X .- 1756-1051. ; 26:3-4, s. 237-247
-
Journal article (peer-reviewed)abstract
- In a previous three gene phylogeny study (nuITS rDNA, nuLSU rDNA and RPB1 region A-D) a well supported clade, most closely related to Verrucaria rupestris and also close to Sporodictyon and Atla, was found. Here this clade is identified as Henrica. A phylogeny of these genera based on the nuITS rDNA is supplied, and also a key to crustose species in Verrucariaceae with large, brown muriform spores. Based on material from northern Europe, Henrica is emended to include H. theleodes and H. melaspora, both new combinations in the previously monotypic genus. Verrucaria theleodes and V. scotinospora are lectotypified.
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| 36. |
- Tibell, Sanja
(author)
-
Henrica
- 2017
-
In: Nordic Lichen Flora Vol. 6. - : Museum of Evolution, Uppsala University and Naturcentrum AB on behalf of Nordic LIchen Society. ; , s. 25-27
-
Book chapter (peer-reviewed)
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| 37. |
- Tibell, Sanja
(author)
-
New records of marine fungi from Sweden
- 2016
-
In: Svensk Mykologisk Tidskrift. - 1653-0357. ; 37:2, s. 43-54
-
Journal article (pop. science, debate, etc.)abstract
- A review of the currently strong interest in marine fungi is presented and the scarcity of re-cords from Swedish waters is noted. New records of filamentous marine fungi resulted both from the revision of material collected by Rolf Santesson in the mid-20:th century and identi-fications via sequencing. In all 18 species from Sweden and two further species from Denmark are reported on. Corollospora borealis and Amphitrite annulata are described as new and further records of five species new to Sweden and records extending the known distributions are given.
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| 38. |
- Tibell, Sanja
(author)
-
Okänd vattensvamp påträffad i Mälarvik - ny art för Sverige : Pseudeurotium hygrophilum
- 2015
-
In: Fauna och flora. - 0014-8903. ; 110:1, s. 17-19
-
Journal article (pop. science, debate, etc.)abstract
- Svampar i sötvatten är generellt dåligt kända; huvuddelen av arterna är ännu inte vetenskapligt beskrivna och namngivna. En för Sverige ny sötvattenssvamp har påträffats i Ekoln, en uppländsk vik av Mälaren. Författaren tror att det sannolikt finns hundratals hittills oupptäckta svamparter i Sveriges limniska och marina miljöer.
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| 39. |
- Tibell, Sanja
(author)
-
Sporodictyon
- 2017
-
In: Nordic Lichen Flora. - : Museum of Evolution, Uppsala University and Naturcentrum AB on behalf of Nordic LIchen Society. - 9789185221332 ; , s. 52-55
-
Book chapter (peer-reviewed)
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| 40. |
- Tibuhwa, Donatha, et al.
(author)
-
A phylogeny for the plant pathogen Piptoporellus baudonii using a multigene data set
- 2020
-
In: Mycologia. - : Informa UK Limited. - 0027-5514 .- 1557-2536. ; 112:5, s. 1017-1025
-
Journal article (peer-reviewed)abstract
- Piptoporellus baudonii is proposed as a new combination for Laetiporus baudonii in the Polyporales (Basidiomycota) based on morphological and molecular features. This parasitic macrofungus attacks cashew trees, Eucalyptus, cassava, Tectona, and some indigenous trees in southern regions of Tanzania and poses a serious threat to agroforestry and livelihood conditions in the area. Phylogenetic trees were produced from partial sequences of three rDNA gene regions and a portion of translation elongation factor 1-alpha (TEF1) gene of Laetiporus baudonii for comparisons with samples from the antrodia clade. Our results reveal a strongly supported group of L. baudonii with Piptoporellus in Fomitopsidaceae. Piptoporellus baudonii shares many morphological features with other members of Piptoporellus but differs from them in having broadly ellipsoid or rarely ovoid basidiospores. Both morphological and phylogenetic evidence justify the placement of L. baudonii in Piptoporellus together with the three other known species in the genus.
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| 41. |
- Tibuhwa, Donatha D., et al.
(author)
-
Afrocantharellus gen. stat. nov. is part of a rich diversity of African Cantharellaceae
- 2012
-
In: IMA Fungus. - : Springer Science and Business Media LLC. - 2210-6340 .- 2210-6359. ; 3:1, s. 25-38
-
Journal article (peer-reviewed)abstract
- A new genus in the Cantharellaceae, Afrocantharellus, is recognized based on results from phylogenetic analyses of rDNA LSU and concatenated LSU/5.8-ITS2/ATP6 data. It was previously recognized as a subgenus, but comprehensive fieldwork and the acquisition of numerous sequences for previously neglected African Cantharellus species formed the basis for a reappraisal of generic and species delimitations. Afrocantharellus is characterized morphologically by the basidiomes having thick, distantly spaced diverging folds of variegated colour. In contrast to most of Cantharellus, Afrocantharellus mostly lacks clamp connections. Phylogenies of Cantharellus and Afrocantharellus based on LSU and a concatenated data set are provided, along with descriptions of and a key to the four species and one form of Afrocantharellus recognized. Six new combinations are made.
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| 42. |
- Tibuhwa, Donatha, et al.
(author)
-
Elucidating the phylogeny of the serious plant pathogen Piptoporellus baudonii using a multigene molecular dataset
-
Other publication (other academic/artistic)abstract
- Piptoporellus baudonii is proposed as a new combination for Laetiporus baudonii in Polyporales (Basidiomycota), based on morphological and molecular features. This parasitic macrofungus attacks cashew trees, Eucalyptus, cassava, Tectona and some indigenous trees in the Southern regions of Tanzania and poses a serious threat to agroforestry and livelihood conditions in the area. Maximum likelihood and Bayesian methods were applied to obtain phylogenetic trees for partial sequences of the 5.8S part of nuc rDNA internal transcribed spacer, parts of 28S nuc rDNA (28S) and 18S nuc rDNA (18S), in addition to parts of gene encoding the translation elongation factor 1-α (TEF1) of Laetiporus baudonii for comparisons with additional sequences from the antrodia clade. Our results reveal a strongly supported phylogenetic clade of L. baudonii with Piptoporellus in Fomitopsidaceae. Piptoporellus baudonii shares many morphological features with other members of Piptoporellus but differs in having broadly ellipsoid or rarely ovoid basidiospores, while in other Piptoporellus species the spores are cylindrical to oblong-ellipsoid. Both morphological and phylogenetic evidence, however, justify the incorporation of L. baudonii in Piptoporellus, to join the three other species in the genus.
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