| 1. |
- Sundberg, Henrik, et al.
(författare)
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Coreomyces (Laboulbeniales) in Sweden, with two new species
- 2021
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Ingår i: Nordic Journal of Botany. - : Wiley. - 0107-055X .- 1756-1051. ; 39:11, s. 1-12
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Tidskriftsartikel (refereegranskat)abstract
- The genus Coreomyces (Laboulbeniaceae, Laboulbeniomycetes, Ascomycota) includes minute parasites on water boatmen (Corixidae, Hemiptera, Insecta). This taxonomic study is primarily based on freshly sampled corixids infected by Coreomyces from Sweden, although a few samples from Denmark and Turkey were also included. All records were verified using DNA sequence data from the internal transcribed spacer region and large subunit of the nuclear ribosomal DNA repeat region. We recognise four species, two of which are new to science: Coreomyces confusus H. Sundb. et al. sp. nov., C. corixae Thaxt., C. dextrorsus H. Sundb. et al. sp. nov. and C. macropus Thaxt. Coreomyces corixae is new to Denmark, Sweden and Turkey, while C. macropus is new to Denmark and Sweden. Coreomyces confusus is morphologically very similar to C. macropus and also occupies the same positions on the same host species, although it seems to be less common. Coreomyces dextrorsus resembles C. corixae morphologically but is usually considerably larger. It infects the same host species as C. corixae and also shares one of its positions on the host with C. corixae, although it is much more common in its species-specific position. All four species can inhabit two different yet distinct positions on the host. We observe that morphology is affected by the position on the host and that different species sharing the same position on the host tend to be difficult or impossible to separate on morphology only. We conclude that species circumscriptions in Coreomyces must be based on the integration of molecular and morphological data.
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| 2. |
- Sundberg, Henrik, et al.
(författare)
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Mating types in the genus Coreomyces
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- The aim of this study was to uncover the mating system in members of the monoecious genus Coremyces (Laboulbeniales, Ascomycota). We retrieved genome sequences from five individuals using NGS methods and looked for mating type genes as well as flanking genes. The genomes represent two species, Coreomyces macropus Thaxt. (four genomes) and C. confusus H. Sundb. et al. (one genome). Our results indicate that the two species of Coreomyces are homothallic. We found both MAT1-1 and MAT1-2 in long scaffolds with high sequencing depth in four out of five genomes (MAT1-2 was not encountered in one of the genomes). The flanking SLA2 gene was observed in all five genomes, whereas APN2 was encountered only in two genomes of C. macropus. Homothallism, combined with the earlier observations that archegonia and antheridia appear in close physical proximity and that spermatia generally disperse only over very short distances, suggest that intrahaploid mating may be the norm in Coreomyces and confers an evolutionary advantage.
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| 3. |
- Sundberg, Henrik, et al.
(författare)
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Position specificity in the genus Coreomyces (Laboulbeniomycetes, Ascomycota)
- 2018
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Ingår i: Fungal Systematics and Evolution. - : Westerdijk Fungal Biodiversity Institute. - 2589-3823 .- 2589-3831. ; 1:1, s. 217-228
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Tidskriftsartikel (refereegranskat)abstract
- To study position specificity in the insect-parasitic fungal genus Coreomyces (Laboulbeniaceae, Laboulbeniales), we sampled corixid hosts (Corixidae, Heteroptera) in southern Scandinavia. We detected Coreomyces thalli in five different positions on the hosts. Thalli from the various positions grouped in four distinct clusters in the resulting gene trees, distinctly so in the ITS and LSU of the nuclear ribosomal DNA, less so in the SSU of the nuclear ribosomal DNA and the mitochondrial ribosomal DNA. Thalli from the left side of abdomen grouped in a single cluster, and so did thalli from the ventral right side. Thalli in the mid-ventral position turned out to be a mix of three clades, while thalli growing dorsally grouped with thalli from the left and right abdominal clades. The mid-ventral and dorsal positions were found in male hosts only. The position on the left hemelytron was shared by members from two sister clades. Statistical analyses demonstrate a significant positive correlation between clade and position on the host, but also a weak correlation between host sex and clade membership. These results indicate that sex-of-host specificity may be a non-existent extreme in a continuum, where instead weak preferences for one host sex may turn out to be frequent.
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| 4. |
- Sundberg, Henrik, et al.
(författare)
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Two new species in the genus Coreomyces Thaxt. from Europe
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- Coreomyces is a small insect-parasitic genus that belongs to the ascomycete order Laboulbeniales. In this study we describe two new species: Coreomyces confusus sp. nov and Coreomyces dextrorsum sp. nov. We have also found C. macropus Thaxt. and C. corixae Thaxt. Thalli congruent in both morphology and position on host integument with C. arcuatus sensu Majewski have been shown to be a morphotype of C. macropus. Infected corixids have been sampled from Sweden and Turkey. Our records have been verified with molecular data (ITS and nrLSU rDNA).
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| 5. |
- Ament-Velásquez, Sandra Lorena, M.Sc. 1988-, et al.
(författare)
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The taxonomy of the model filamentous fungus Podospora anserina
- 2020
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Ingår i: MycoKeys. - : Pensoft Publishers. - 1314-4057 .- 1314-4049. ; :75, s. 51-69
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Tidskriftsartikel (refereegranskat)abstract
- The filamentous fungus Podospora anserina has been used as a model organism for more than 100 years and has proved to be an invaluable resource in numerous areas of research. Throughout this period, P. anserina has been embroiled in a number of taxonomic controversies regarding the proper name under which it should be called. The most recent taxonomic treatment proposed to change the name of this important species to Triangularia anserina. The results of past name changes of this species indicate that the broader research community is unlikely to accept this change, which will lead to nomenclatural instability and confusion in literature. Here, we review the phylogeny of the species closely related to P. anserina and provide evidence that currently available marker information is insufficient to resolve the relationships amongst many of the lineages. We argue that it is not only premature to propose a new name for P. anserina based on current data, but also that every effort should be made to retain P. anserina as the current name to ensure stability and to minimise confusion in scientific literature. Therefore, we synonymise Triangularia with Podospora and suggest that either the type species of Podospora be moved to P. anserina from P. fimiseda or that all species within the Podosporaceae be placed in the genus Podospora.
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| 6. |
- Hensen, Noah, et al.
(författare)
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Genome-scale phylogeny and comparative genomics of the fungal order Sordariales
- 2023
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Ingår i: Molecular Phylogenetics and Evolution. - : Elsevier. - 1055-7903 .- 1095-9513. ; 189
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Tidskriftsartikel (refereegranskat)abstract
- The order Sordariales is taxonomically diverse, and harbours many species with different lifestyles and large economic importance. Despite its importance, a robust genome-scale phylogeny, and associated comparative genomic analysis of the order is lacking.In this study, we examined whole-genome data from 99 Sordariales, including 52 newly sequenced genomes, and seven outgroup taxa. We inferred a comprehensive phylogeny that resolved several contentious relationships amongst families in the order, and cleared-up intrafamily relationships within the Podosporaceae. Extensive comparative genomics showed that genomes from the three largest families in the dataset (Chae-tomiaceae, Podosporaceae and Sordariaceae) differ greatly in GC content, genome size, gene number, repeat percentage, evolutionary rate, and genome content affected by repeat-induced point mutations (RIP). All genomic traits showed phylogenetic signal, and ancestral state reconstruction revealed that the variation of the properties stems primarily from within-family evolution. Together, the results provide a thorough framework for understanding genome evolution in this important group of fungi.
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| 7. |
- Kruys, Åsa, 1975-, et al.
(författare)
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Coprophilous contributions to the phylogeny of Lasiosphaeriaceae and allied taxa within Sordariales (Ascomycota, Fungi)
- 2015
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Ingår i: Fungal diversity. - : Springer Science and Business Media LLC. - 1560-2745 .- 1878-9129. ; 10:1, s. 101-113
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Tidskriftsartikel (refereegranskat)abstract
- The phylogenetic relationships of Lasiosphaeriaceae are complicated in that the family is paraphyletic and includes Sordariaceae and Chaetomiaceae, as well as several polyphyletic genera. This study focuses on the phylogenetic relationships of the coprophilous genera, Anopodium, Apodospora, Arnium, Fimetariella and Zygospermella. They are traditionally circumscribed based on ascospore characters, which have proven homoplasious in other genera within the family. Our results based on LSU nrDNA and ß–tubulin sequences distinguish four lineages ofLasiosphaeriaceae taxa. Anopodium joins the clade of morphologically similar, yellow-pigmented species of Cercophora and Lasiosphaeria. Apodospora is monophyletic and joins a larger group of taxa with unclear affinities to each other, while Arnium is polyphyletic being scattered throughout three of the four major clades of Lasiosphaeriaceae. Fimitariella is represented by a single collection and joins the clade containing Cercophora scortea and Podospora appendiculata. Zygospermellashows affinities to the Lasiosphaeris clade. Based on a combination of morphological and molecular data, Echria stat. nov. is recognized at the genus level for the former Arnium section and two new combinations are proposed: E. gigantospora and E. macrotheca.
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| 8. |
- Kruys, Åsa, 1975-, et al.
(författare)
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Molecular phylogeny of Sydowiellaceae : resolving the position of Cainiella
- 2012
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Ingår i: Mycologia. - : Informa UK Limited. - 0027-5514 .- 1557-2536. ; 104:2, s. 419-426
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Tidskriftsartikel (refereegranskat)abstract
- Cainiella is an ascomycete genus associated with arctic alpine plants. The systematic position of Cainiella has long been unclear, with current classifications placing the genus in either Sordariales or Xylariales. Our molecular results, based on mtSSU, ITS and nLSU rDNA data, clearly show that the genus belongs in the Sydowiellaceae (Diaporthales). The study also includes new sequences of Sydowiellaceae and contributes to a better knowledge of the phylogenetic relationships of that family.
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| 9. |
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| 10. |
- Kruys, Åsa, 1975-, et al.
(författare)
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Species richness of coprophilous ascomycetes in relation to variable food intake by herbivores
- 2008
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Ingår i: Fungal diversity. - 1560-2745 .- 1878-9129. ; 30, s. 73-81
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Tidskriftsartikel (refereegranskat)abstract
- The aim of this study was to study species richness and species composition of coprophilous ascomycetes in borcal forest. Dung was sampled at three localities and of three herbivores, moose (Alces alces), mountain hare (Lepus timidus), and roe deer (Capreolus capreolus). Species richness differed significantly among dung types and we also found a significant effect of the interaction between locality and dung type on the mean number of species. The highest species richness was found on roe deer dung. While moose did not differ from mountain hare. There was a strong positive relationship between the total number of ascomycete species and the number of plant species foraged by the three herbivores. We believe that food choice is one important factor influencing the species richness of coprophilous ascomycetes, and that some species are more associated with habitat and food choice of the herbivore, rather than a specific dung type/animal species. The composition of species on the different dung types is also discussed. Our results suggests that the coprophilous mycota in the boreal forest is poorly known, we found 47 species in total, four species were undescribed. I was new to Sweden, 24 species were new records for the province, and we made a total of 22 new substrate records.
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