Vitamin B₁₂ conveys a protective advantage to phycosphere-associated bacteria at high temperatures.

ABSTRACT: Many marine microbes require vitamin B₁₂ (cobalamin) but are unable to synthesize it, necessitating reliance on other B₁₂-producing microbes. Thus, phytoplankton and bacterioplankton community dynamics can partially depend on the production and release of a limiting resource by members of the same community. We tested the impact of temperature and B₁₂ availability on the growth of two bacterial taxa commonly associated with phytoplankton: Ruegeria pomeroyi, which produces B₁₂ and fulfills the B₁₂ requirements of some phytoplankton, and Alteromonas macleodii, which does not produce B₁₂ but also does not strictly require it for growth. For B₁₂-producing R. pomeroyi, we further tested how temperature influences B

SUBMITTER: Mars Brisbin M 

PROVIDER: S-EPMC10457287 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature