Coevolution of marine phytoplankton and Alteromonas bacteria in response to pCO2 and coculture.

ABSTRACT: As a result of human activity, Earth's atmosphere and climate are changing at an unprecedented pace. Models based on short-term experiments predict major changes will occur in marine phytoplankton communities in the future ocean, but rarely consider how evolution or interactions with other microbes may influence these changes. Here, we experimentally evolved several phytoplankton in coculture with a heterotrophic bacterium, Alteromonas sp. EZ55, under either present-day or predicted future pCO2 conditions. Growth rates of phytoplankton generally increased over time under both conditions, but only Thalassiosira oceanica had evidence of a growth rate tradeoff in the ancestral environment after evolution at elevated pCO2. The growth defects observed in ancestral Prochlorococcus cultures at el

SUBMITTER: Lu Z 

PROVIDER: S-EPMC11748131 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature