Taxonomy of Aspergillus series Versicolores: species reduction and lessons learned about intraspecific variability

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388971%3A_____%2F22%3A00566493" target="_blank" >RIV/61388971:_____/22:00566493 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11310/22:10457320

Result on the web

<a href="https://www.studiesinmycology.org/index.php/issue/116-studies-in-mycology-no-102" target="_blank" >https://www.studiesinmycology.org/index.php/issue/116-studies-in-mycology-no-102</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3114/sim.2022.102.02" target="_blank" >10.3114/sim.2022.102.02</a>

Result language

angličtina

Original language name

Taxonomy of Aspergillus series Versicolores: species reduction and lessons learned about intraspecific variability

Original language description

Aspergillus series Versicolores members occur in a wide range of environments and substrates such as indoor environments, food, clinical materials, soil, caves, marine or hypersaline ecosystems. The taxonomy of the series has undergone numerous re-arrangements including a drastic reduction in the number of species and subsequent recovery to 17 species in the last decade. The identification to species level is however problematic or impossible in some isolates even using DNA sequencing or MALDI-TOF mass spectrometry indicating a problem in the definition of species boundaries. To revise the species limits, we assembled a large dataset of 518 strains. From these, a total of 213 strains were selected for the final analysis according to their calmodulin (CaM) genotype, substrate and geography. This set was used for phylogenetic analysis based on five loci (benA, CaM, RPB2, Mcm7, Tsr1). Apart from the classical phylogenetic methods, we used multispecies coalescence (MSC) model-based methods, including one multilocus method (STACEY) and five single-locus methods (GMYC, bGMYC, PTP, bPTP, ABGD). Almost all species delimitation methods suggested a broad species concept with only four species consistentlynsupported. We also demonstrated that the currently applied concept of species is not sustainable as there are incongruences between single-gene phylogenies resulting in different species identifications when using different gene regions. Morphological and physiological data showed overall lack of good, taxonomically informative characters, which could be used for identification of such a large number of existing species. The characters expressed either low variability across species or significant intraspecific variability exceeding interspecific variability.

Czech name

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Czech description

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Type

J_ost - Miscellaneous article in a specialist periodical

CEP classification

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OECD FORD branch

10606 - Microbiology

Project

<a href="/en/project/NU21-05-00681" target="_blank" >NU21-05-00681: Consequences of hybridization for spread of antifungal resistance and species delimitation in pathogenic fungi: model study in Aspergillus and Trichophyton</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Studies in Mycology

ISSN

0166-0616

e-ISSN

1872-9797

Volume of the periodical

102

Issue of the periodical within the volume

November 16

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

41

Pages from-to

53-93

UT code for WoS article

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EID of the result in the Scopus database

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