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Fifty Aureobasidium pullulans genomes reveal a recombining polyextremotolerant generalist
ID Gostinčar, Cene (Author), ID Turk, Martina (Author), ID Zajc, Janja (Author), ID Gunde-Cimerman, Nina (Author)

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Abstract
The black yeast Aureobasidium pullulans is a textbook example of a generalistic and ubiquitous fungus thriving in a wide variety of environments. To investigate whether A. pullulans is a true generalist, or alternatively, whether part of its versatility can be attributed to intraspecific specialization masked by cryptic diversification undetectable by traditional phylogenetic analyses, we sequenced and analysed the genomes of 50 strains of A. pullulans from different habitats and geographic locations. No population structure was observed in the sequenced strains. Decay of linkage disequilibrium over shorter physical distances (<100 bp) than in many sexually reproducing fungi indicates a high level of recombination in the species. A homothallic mating locus was found in all of the sequenced genomes. Aureobasidium pullulans appears to have a homogeneous population genetics structure, which is best explained by good dispersal and high levels of recombination. This means that A. pullulans is a true generalist that can inhabit different habitats without substantial specialization to any of these habitats at the genomic level. Furthermore, in the future, the high level of A. pullulans recombination can be exploited for the identification of genomic loci that are involved in the many biotechnologically useful traits of this black yeast.

Language:English
Keywords:black yeast, genome
Work type:Article (dk_c)
Typology:1.01 - Original Scientific Article
Organization:BF - Biotechnical Faculty
Year:2019
Publication status in journal:Published
Article version:Publisher's version of article
Number of pages:Str. 3638-3652
Numbering:Vol. 21, iss. 10
UDC:577.21
ISSN on article:1462-2912
DOI:10.1111/1462-2920.14693 This link opens in a new window
COBISS.SI-ID:5158991 This link opens in a new window
Publication date in RUL:09.09.2019
Views:648
Downloads:200
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Record is a part of a journal

Title:Environmental Microbiology
Shortened title:Environ. microbiol. (Print)
Publisher:Society for Applied Microbiology, Wiley
ISSN:1462-2912
COBISS.SI-ID:626197 This link opens in a new window

Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:02.10.2019

Document is financed by a project

Funder:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije (ARRS)
izpis_stevilka_projekta:I0-0021
Name:Infrastrukturni center za raziskave molekulskih interakcij, Razvojno raziskovalni center za proučevanje rasti in razvoja kmetijskih rastlin, IC Mycosmo

Funder:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije (ARRS)
izpis_stevilka_projekta:I0-0022
Name:Mreža raziskovalnih infrastrukturnih centrov Univerze v Ljubljani (MRIC UL)

Funder:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije (ARRS)
izpis_stevilka_projekta:P1-0170
Name:Molekulski mehanizmi uravnavanja celičnih procesov v povezavi z nekaterimi boleznimi pri človeku

Funder:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije (ARRS)
izpis_stevilka_projekta:P1-0207
Name:Toksini in biomembrane

Funder:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije (ARRS)
izpis_stevilka_projekta:Z7-7436
Name:Na stres tolerantne kvasovke iz rodu Aureobasidium: uporaba v biološki kontroli nekaterih rastlinskih bolezni

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