Taxonomic novelties in Aspergillus section Fumigati: A-tasmanicus sp nov., induction of sexual state in A-turcosus and overview of related species

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388971%3A_____%2F17%3A00475528" target="_blank" >RIV/61388971:_____/17:00475528 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11110/17:10371422 RIV/00216208:11310/17:10371422

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s00606-017-1400-4" target="_blank" >http://dx.doi.org/10.1007/s00606-017-1400-4</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00606-017-1400-4" target="_blank" >10.1007/s00606-017-1400-4</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Taxonomic novelties in Aspergillus section Fumigati: A-tasmanicus sp nov., induction of sexual state in A-turcosus and overview of related species

Popis výsledku v původním jazyce

The phylogenetic position of two Aspergillus strains isolated from Australian soil and phenotypically resembling A. unilateralis was investigated by using multigene phylogeny based on beta-tubulin (benA), calmodulin (CaM), actin (act), and RNA polymerase II second largest subunit (RPB2) genes. The analysis supported their placement into a separate lineage within a well-supported clade containing 10 other members of section Fumigati ('A. unilateralis clade'). Comparisons of extrolite profiles, taxonomically informative morphological and physiological characters were made, and it was discovered that the two strains can be differentiated from all relatives by their low maximum growth temperature, short stipes, and ornamentation of conidia. The data justified the proposal of a new species, A. tasmanius sp. nov. Amplification of mating-type genes showed that the A. unilateralis clade contains five heterothallic species. Only the MAT1-1-1 idiomorph was detected among isolates of A. unilateralis, A. tasmanicus, and A. marvanovae, while isolates having both opposite mating types were detected in A. turcosus and A. nishimurae. The sexual state of A. turcosus was induced by mating experiments and is described in this study. Ascospores of this species were unique by their smooth to finely verrucose convex surface and two well-visible equatorial crests. Some exometabolites detected in A. marvanovae and A. tasmanicus are also indicative of a perfect state, thus supporting the hypothesis that these species have cryptic sexual cycles. The epitype and ex-epitype culture is designated for A. nishimurae to facilitate further taxonomic work with this species.

Název v anglickém jazyce

Taxonomic novelties in Aspergillus section Fumigati: A-tasmanicus sp nov., induction of sexual state in A-turcosus and overview of related species

Popis výsledku anglicky

The phylogenetic position of two Aspergillus strains isolated from Australian soil and phenotypically resembling A. unilateralis was investigated by using multigene phylogeny based on beta-tubulin (benA), calmodulin (CaM), actin (act), and RNA polymerase II second largest subunit (RPB2) genes. The analysis supported their placement into a separate lineage within a well-supported clade containing 10 other members of section Fumigati ('A. unilateralis clade'). Comparisons of extrolite profiles, taxonomically informative morphological and physiological characters were made, and it was discovered that the two strains can be differentiated from all relatives by their low maximum growth temperature, short stipes, and ornamentation of conidia. The data justified the proposal of a new species, A. tasmanius sp. nov. Amplification of mating-type genes showed that the A. unilateralis clade contains five heterothallic species. Only the MAT1-1-1 idiomorph was detected among isolates of A. unilateralis, A. tasmanicus, and A. marvanovae, while isolates having both opposite mating types were detected in A. turcosus and A. nishimurae. The sexual state of A. turcosus was induced by mating experiments and is described in this study. Ascospores of this species were unique by their smooth to finely verrucose convex surface and two well-visible equatorial crests. Some exometabolites detected in A. marvanovae and A. tasmanicus are also indicative of a perfect state, thus supporting the hypothesis that these species have cryptic sexual cycles. The epitype and ex-epitype culture is designated for A. nishimurae to facilitate further taxonomic work with this species.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10606 - Microbiology

Projekt

<a href="/cs/project/ED1.1.00%2F02.0109" target="_blank" >ED1.1.00/02.0109: Biotechnologické a biomedicínské centrum Akademie věd a Univerzity Karlovy</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Plant Systematics and Evolution

ISSN

0378-2697

e-ISSN

—

Svazek periodika

303

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

AT - Rakouská republika

Počet stran výsledku

20

Strana od-do

787-806

Kód UT WoS článku

000401928400009

EID výsledku v databázi Scopus

2-s2.0-85017620190