Tremella macrobasidiata and Tremella variae have abundant and widespread yeast stages in Lecanora lichens
| Autor: | Mats Wedin, Anna Rosling, Sandra Freire-Rallo, Veera Tuovinen, Ana M. Millanes |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0303 health sciences
biology Hypha Lichens 030306 microbiology Basidiomycota Tremella Lecanora Saccharomyces cerevisiae biology.organism_classification Microbiology Thallus 03 medical and health sciences Mikrobiologi Symbiosis Ascomycota Botany Basidiocarp Lichen Ecology Evolution Behavior and Systematics 030304 developmental biology Hymenia |
| Popis: | Dimorphism is a widespread feature of tremellalean fungi in general, but a little-studied aspect of the biology of lichen-associated Tremella. We show that Tremella macrobasidiata and Tremella variae have an abundant and widespread yeast stage in their life cycles that occurs in Lecanora lichens. Their sexual filamentous stage is restricted to a specific lichen: T. macrobasidiata only forms basidiomata on Lecanora chlarotera hymenia and T. variae only on Lecanora varia thalli. However, the yeast stage of T. macrobasidiata is less specific and can occur in L. varia lichens, whilst all life stages of T. variae may be specific to L. varia. Contrary to the hyphal stages, the yeasts are distributed across the thalli and hymenia of Lecanora lichens, and not limited to specimens with basidiomata. Tremella macrobasidiata was present in all studied L. chlarotera, and in 59% of L. varia specimens. Only in 8% of the L. varia thalli could none of the two Tremella species be detected. Our results indicate that lichen-associated Tremella may be much more abundant and widespread than previously assumed leading to skewed estimations about their distribution ranges and lichen specificity, and raise new questions about their biology, ecology and function in the symbiosis. |
| Databáze: | OpenAIRE |
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