Heterotroph Interactions Alter Prochlorococcus Transcriptome Dynamics during Extended Periods of Darkness.

ABSTRACT: Microbes evolve within complex ecological communities where biotic interactions impact both individual cells and the environment as a whole. Here we examine how cellular regulation in the marine cyanobacterium Prochlorococcus is influenced by a heterotrophic bacterium, Alteromonas macleodii, under different light conditions. We monitored the transcriptome of Prochlorococcus, grown either alone or in coculture, across a diel light:dark cycle and under the stress of extended darkness-a condition that cells would experience when mixed below the ocean's euphotic zone. More Prochlorococcus transcripts exhibited 24-h periodic oscillations in coculture than in pure culture, both over the normal diel cycle and after the shift to extended darkness. This demonstrates that biotic

SUBMITTER: Biller SJ 

PROVIDER: S-EPMC5974335 | biostudies-literature | 2018 May-Jun

REPOSITORIES: biostudies-literature