An unusual sexual stage in the alkalophilic ascomycete Sodiomyces alkalinus
| Autor: | O. V. Kamzolkina, Alexey A. Grum-Grzhimaylo, Maria V. Kozlova, E. N. Bilanenko |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
Life cycle Turgor pressure Asexual sporulation Fungus Development Laboratorium voor Erfelijkheidsleer 01 natural sciences 03 medical and health sciences Ascomycota Convergent evolution Botany Extremophile Genetics Ecology Evolution Behavior and Systematics Marine fungi 030304 developmental biology 0303 health sciences geography Microscopy biology Obligate fungi Soda Lakes Spores Fungal biology.organism_classification Infectious Diseases geography.geographical_feature Laboratory of Genetics Cytology 010606 plant biology & botany |
| Zdroj: | Fungal Biology 123 (2019) 2 Fungal Biology, 123(2), 140-150 |
| ISSN: | 1878-6146 |
| Popis: | Exploring life cycles of fungi is insightful for understanding their basic biology and can highlight their ecology. Here, we dissected the sexual and asexual life cycles of the obligate alkalophilic ascomycete Sodiomyces alkalinus that thrives at extremely high pH of soda lakes. S. alkalinus develops acremonium-type asexual sporulation, commonly found in ascomycetous fungi. However, the sexual stage was unusual, featuring very early lysis of asci which release young ascospores inside a fruit body long before its maturation. In a young fruit body, a slimy matrix which originates from the combined epiplasm of asci and united cytoplasm of the pseudoparenchymal cells, surrounds pooled maturing ascospores. Upon maturity, the ascospores are forcibly released through a crack in the fruit body, presumably due to an increased turgor pressure. These features of the sexual stage development resemble the ones found in unrelated marine fungi, indicating convergent evolution of the trait. We hypothesise these developmental features of S. alkalinus to be adaptive in the conditions of periodically inundated rims of soda lakes where the fungus thrives. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect