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Clonality, inbreeding, and hybridization in two extremotolerant black yeasts
ID Gostinčar, Cene (Avtor), ID Sun, Xiaohuan (Avtor), ID Černoša, Anja (Avtor), ID Fang, Chao (Avtor), ID Gunde-Cimerman, Nina (Avtor), ID Song, Zewei (Avtor)

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Izvleček
Background: The great diversity of lifestyles and survival strategies observed in fungi is reflected in the many ways in which they reproduce and recombine. Although a complete absence of recombination is rare, it has been reported for some species, among them 2 extremotolerant black yeasts from Dothideomycetes: Hortaea werneckii and Aureobasidium melanogenum. Therefore, the presence of diploid strains in these species cannot be explained as the product of conventional sexual reproduction. Results: Genome sequencing revealed that the ratio of diploid to haploid strains in both H. werneckii and A. melanogenum is about 2:1. Linkage disequilibrium between pairs of polymorphic loci and a high degree of concordance between the phylogenies of different genomic regions confirmed that both species are clonal. Heterozygosity of diploid strains is high, with several hybridizing genome pairs reaching the intergenomic distances typically seen between different fungal species. The origin of diploid strains collected worldwide can be traced to a handful of hybridization events that produced diploids, which were stable over long periods of time and distributed over large geographic areas. Conclusions: Our results, based on the genomes of over 100 strains of 2 black yeasts, show that although they are clonal, they occasionally form stable and highly heterozygous diploid intraspecific hybrids. The mechanism of these apparently rare hybridization events, which are not followed by meiosis or haploidization, remains unknown. Both extremotolerant yeasts, H. werneckii and even more so A. melanogenum, a close relative of the intensely recombining and biotechnologically relevant Aureobasidium pullulans, provide an attractive model for studying the role of clonality and ploidy in extremotolerant fungi.

Jezik:Angleški jezik
Ključne besede:population genomics, halotolerance, extremotolerance, halophilic fungus, Hortaea werneckii, Aureobasidium melanogenum, hybridization
Vrsta gradiva:Članek v reviji
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:BF - Biotehniška fakulteta
Status publikacije:Objavljeno
Različica publikacije:Objavljena publikacija
Leto izida:2022
Št. strani:16 str.
Številčenje:Vol. 11, art. giac095
PID:20.500.12556/RUL-148528 Povezava se odpre v novem oknu
UDK:575.111
ISSN pri članku:2047-217X
DOI:10.1093/gigascience/giac095 Povezava se odpre v novem oknu
COBISS.SI-ID:126622211 Povezava se odpre v novem oknu
Datum objave v RUL:25.08.2023
Število ogledov:768
Število prenosov:133
Metapodatki:XML DC-XML DC-RDF
:
GOSTINČAR, Cene, SUN, Xiaohuan, ČERNOŠA, Anja, FANG, Chao, GUNDE-CIMERMAN, Nina in SONG, Zewei, 2022, Clonality, inbreeding, and hybridization in two extremotolerant black yeasts. GigaScience [na spletu]. 2022. Vol. 11,  giac095. [Dostopano 3 julij 2025]. DOI 10.1093/gigascience/giac095. Pridobljeno s: https://repozitorij.uni-lj.si/IzpisGradiva.php?lang=slv&id=148528
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Gradivo je del revije

Naslov:GigaScience
Založnik:Oxford University Press
ISSN:2047-217X
COBISS.SI-ID:3513935 Povezava se odpre v novem oknu

Licence

Licenca:CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by/4.0/deed.sl
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Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:populacijska genomika, halotoleranca, ekstremotoleranca, halofilne glive, Hortaea werneckii, Aureobasidium melanogenum, hibridizacija

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Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
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Številka projekta:P4-0432
Naslov:Morska in mikrobna biotehnologija

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:P1-0198
Naslov:Molekularno-biološke raziskave mikroorganizmov

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:J4-2549
Naslov:Razgradnja plastike s poliekstremotolerantnimi glivami

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Program financ.:Young researchers

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