| 1. |
- Gilbert Temu, Stella, 1987-
(författare)
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Lichens in Mountain Rainforests of Tanzania : Studies of Usnea and Calicioids
- 2020
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)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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| 2. |
- Hyde, K. D., et al.
(författare)
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Global consortium for the classification of fungi and fungus-like taxa
- 2023
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Ingår i: MYCOSPHERE. - : Mushroom Research Foundation. - 2077-7000 .- 2077-7019. ; 14:1, s. 1960-2012
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Tidskriftsartikel (refereegranskat)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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| 3. |
- Temu, Stella, et al.
(författare)
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Coniocybe Ach., Revision of a Genus of Calicioid Lichens
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Annan publikation (övrigt vetenskapligt/konstnärligt)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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| 4. |
- Temu, Stella G., et al.
(författare)
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Coniocybe Ach. revisited
- 2024
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Ingår i: Journal of Fungi. - : MDPI. - 2309-608X. ; 10:5
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Tidskriftsartikel (refereegranskat)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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| 5. |
- Temu, Stella, et al.
(författare)
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The Usnea pectinata aggregate, Molecular, Morphological and Chemical Variation
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Annan publikation (övrigt vetenskapligt/konstnärligt)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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| 6. |
- Tibell, Leif, et al.
(författare)
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Chaenotheca biesboschii a new calicioid lichen from willow forests in the Netherlands
- 2019
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Ingår i: The Lichenologist. - 0024-2829 .- 1096-1135. ; 51:2, s. 123-135
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Tidskriftsartikel (refereegranskat)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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| 7. |
- Gueidan, Cecile, et al.
(författare)
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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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Ingår i: Taxon. - 0040-0262 .- 1996-8175. ; 58:1, s. 184-208
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Forskningsöversikt (refereegranskat)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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| 8. |
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| 9. |
- Hussein, Juma, 1986-, et al.
(författare)
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Chemical composition of the medicinal mushroom Kusaghiporia usambarensis
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Annan publikation (övrigt vetenskapligt/konstnärligt)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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| 10. |
- Hussein, Juma, 1986-, et al.
(författare)
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Cysteine-rich peptide from the gigantic edible mushroom Kusaghiporia usambarensis (Laetiporaceae)
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Annan publikation (övrigt vetenskapligt/konstnärligt)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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| 11. |
- Hussein, Juma Mahmud, 1986-
(författare)
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Polyporoid fungi of Tanzania : Taxonomy, transcriptomics and biochemical analyses of Kusaghiporia usambarensis and Piptoporellus baudonii
- 2020
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)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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| 12. |
- Nordin, Anders, et al.
(författare)
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Phylogeny and taxonomy of Aspicilia and Megasporaceae
- 2010
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Ingår i: Mycologia. - : Informa UK Limited. - 0027-5514 .- 1557-2536. ; 102:6, s. 1339-1349
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Tidskriftsartikel (refereegranskat)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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| 13. |
- Savić, Sanja, et al.
(författare)
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Atla, a new genus in the Verrucariaceae (Verrucariales)
- 2008
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Ingår i: The Lichenologist. - 0024-2829 .- 1096-1135. ; 40:Part 4, s. 269-282
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Tidskriftsartikel (refereegranskat)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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| 14. |
- Savic, Sanja, et al.
(författare)
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Checklist of the lichens of Serbia
- 2006
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Ingår i: Mycologia Balcanica. - 1312-3300. ; 3:2-3, s. 187-215
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Tidskriftsartikel (refereegranskat)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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| 15. |
- Savić, Sanja, et al.
(författare)
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Molecular phylogeny and systematics of Polyblastia (Verrucariaceae, Eurotiomycetes) and allied genera
- 2008
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Ingår i: Mycological Research. - : Elsevier BV. - 0953-7562 .- 1469-8102. ; 112:Part 11, s. 1307-1318
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Tidskriftsartikel (refereegranskat)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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| 16. |
- Savic, Sanja, et al.
(författare)
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New and interesting lichenized and lichenicolous fungi from Serbia
- 2006
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Ingår i: Mycologia Balcanica. - 1312-3300. ; 3:2-3, s. 99-106
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Tidskriftsartikel (refereegranskat)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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| 17. |
- Savić, Sanja, 1963-
(författare)
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Phylogeny and Taxonomy of Polyblastia and allied taxa (Verrucariaceae)
- 2007
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)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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| 18. |
- Savić, Sanja, et al.
(författare)
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Polyblastia in Northern Europe and the adjacent Arctic
- 2012
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Bok (övrigt vetenskapligt/konstnärligt)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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| 19. |
- Savić, Sanja, et al.
(författare)
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Taxonomy and species delimitation in Sporodictyon (Verrucariaceae) in Northern Europe and the adjacent Arctic – reconciling molecular and morphological data
- 2009
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Ingår i: Taxon. - 0040-0262 .- 1996-8175. ; 58:2, s. 585-605
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Tidskriftsartikel (refereegranskat)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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| 20. |
- Savic, Sanja, et al.
(författare)
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The lichen genus Henrica (Verrucariaceae, Eurotiomycetes) in northern Europe
- 2008
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Ingår i: Nordic Journal of Botany. - : Wiley. - 0107-055X .- 1756-1051. ; 26:3-4, s. 237-247
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Tidskriftsartikel (refereegranskat)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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| 21. |
- Tibuhwa, Donatha D., et al.
(författare)
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Afrocantharellus gen. stat. nov. is part of a rich diversity of African Cantharellaceae
- 2012
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Ingår i: IMA Fungus. - : Springer Science and Business Media LLC. - 2210-6340 .- 2210-6359. ; 3:1, s. 25-38
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Tidskriftsartikel (refereegranskat)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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| 22. |
- Tibuhwa, Donatha, et al.
(författare)
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Elucidating the phylogeny of the serious plant pathogen Piptoporellus baudonii using a multigene molecular dataset
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Annan publikation (övrigt vetenskapligt/konstnärligt)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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