Predicting global numbers of teleomorphic ascomycetes

文献类型： 外文期刊

第一作者： Senanayake, Indunil C.

作者： Senanayake, Indunil C.;Zhang, Hao-xing;Xie, Ning;Senanayake, Indunil C.;Kularathnage, Nuwan D.;Xiang, Mei-mei;Hyde, Kevin D.;Pem, Dhandevi;Rathnayaka, Achala R.;Wijesinghe, Subodini N.;Kularathnage, Nuwan D.;Gomdola, Deecksha;Harishchandra, Dulanjalee;Ekanayaka, Anusha H.;Hyde, Kevin D.;Pem, Dhandevi;Rathnayaka, Achala R.;Wijesinghe, Subodini N.;Kularathnage, Nuwan D.;Gomdola, Deecksha;Harishchandra, Dulanjalee;Ekanayaka, Anusha H.;Hyde, Kevin D.;Tibpromma, Saowaluck;Wanasinghe, Dhanushka N.;Phookamsak, Rungtiwa;Ekanayaka, Anusha H.;Hyde, Kevin D.;Wanasinghe, Dhanushka N.;Phookamsak, Rungtiwa;Tibpromma, Saowaluck;Wanasinghe, Dhanushka N.;Phookamsak, Rungtiwa;Harishchandra, Dulanjalee;Dissanayake, Lakmali S.;McKenzie, Eric H. C.

作者机构：

关键词： Ascomycota; Estimates; Habitat diversity; Molecular techniques; Species concepts

期刊名称：FUNGAL DIVERSITY （ 影响因子：24.902； 五年影响因子：20.072 ）

ISSN： 1560-2745

年卷期： 2022 年 114 卷 1 期

页码：

收录情况： SCI

摘要： Sexual reproduction is the basic way to form high genetic diversity and it is beneficial in evolution and speciation of fungi. The global diversity of teleomorphic species in Ascomycota has not been estimated. This paper estimates the species number for sexual ascomycetes based on five different estimation approaches, viz. by numbers of described fungi, by fungus:substrate ratio, by ecological distribution, by meta-DNA barcoding or culture-independent studies and by previous estimates of species in Ascomycota. The assumptions were made with the currently most accepted, "2.2-3.8 million" species estimate and results of previous studies concluding that 90% of the described ascomycetes reproduce sexually. The Catalogue of Life, Species Fungorum and published research were used for data procurement. The average value of teleomorphic species in Ascomycota from all methods is 1.86 million, ranging from 1.37 to 2.56 million. However, only around 83,000 teleomorphic species have been described in Ascomycota and deposited in data repositories. The ratio between described teleomorphic ascomycetes to predicted teleomorphic ascomycetes is 1:22. Therefore, where are the undiscovered teleomorphic ascomycetes? The undescribed species are no doubt to be found in biodiversity hot spots, poorly-studied areas and species complexes. Other poorly studied niches include extremophiles, lichenicolous fungi, human pathogens, marine fungi, and fungicolous fungi. Undescribed species are present in unexamined collections in specimen repositories or incompletely described earlier species. Nomenclatural issues, such as the use of separate names for teleomorph and anamorphs, synonyms, conspecific names, illegitimate and invalid names also affect the number of described species. Interspecies introgression results in new species, while species numbers are reduced by extinctions.

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