Phase transition behaviour in yeast and bacterial populations under stress.

ABSTRACT: Non-equilibrium phase transitions from survival to extinction have recently been observed in computational models of evolutionary dynamics. Dynamical signatures predictive of population collapse have been observed in yeast populations under stress. We experimentally investigate the population response of the budding yeast Saccharomyces cerevisiae to biological stressors (temperature and salt concentration) in order to investigate the system's behaviour in the vicinity of population collapse. While both conditions lead to population decline, the dynamical characteristics of the population response differ significantly depending on the stressor. Under temperature stress, the population undergoes a sharp change with significant fluctuations within a critical temperature range, indicati

SUBMITTER: Ordway SW 

PROVIDER: S-EPMC7428260 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature