Forest Saccharomyces paradoxus are robust to seasonal biotic and abiotic changes
| Autor: | Dominika Wloch-Salamon, Primrose J. Boynton, Doreen Landermann, Eva H. Stukenbrock |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
environmental yeast Population selection rapid adaptation Biology microbial ecology Paradoxus 010603 evolutionary biology 01 natural sciences Intraspecific competition 03 medical and health sciences Microbial ecology Saccharomyces paradoxus education QH540-549.5 Ecology Evolution Behavior and Systematics 030304 developmental biology Nature and Landscape Conservation Abiotic component killer yeast 0303 health sciences education.field_of_study Phenotypic plasticity Ecology Resistance (ecology) fungi biology.organism_classification Adaptation |
| Zdroj: | Ecology and Evolution Ecology and Evolution, Vol 11, Iss 11, Pp 6604-6619 (2021) |
| Popis: | Microorganisms are famous for adapting quickly to new environments. However, most evidence for rapid microbial adaptation comes from laboratory experiments or domesticated environments, and it is unclear how rates of adaptation scale from human-influenced environments to the great diversity of wild microorganisms. We examined potential monthly-scale selective pressures in the model forest yeast Saccharomyces paradoxus. Contrary to expectations of seasonal adaptation, the S. paradoxus population was stable over four seasons in the face of abiotic and biotic environmental changes. While the S. paradoxus population was diverse, including 41 unique genotypes among 192 sampled isolates, there was no correlation between S. paradoxus genotypes and seasonal environments. Consistent with observations from other S. paradoxus populations, the forest population was highly clonal and inbred. This lack of recombination, paired with population stability, implies that S. paradoxus evolved the phenotypic plasticity needed to resist seasonal environmental fluctuations long ago, and that individual S. paradoxus are generalists with regard to seasonal environments. Similarly, while the forest population included diversity among phenotypes related to intraspecific interference competition, there was no evidence for active coevolution among these phenotypes. At least ten percent of the forest S. paradoxus individuals produced “killer toxins”, which kill sensitive Saccharomyces cells, but the presence of a toxin-producing isolate did not predict resistance to the toxin among nearby isolates. How forest yeasts acclimate to changing environments remains an open question, and future studies should investigate the physiological responses that allow microbial cells to cope with environmental fluctuations in their native habitats. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|