Community context and pCO₂ impact the transcriptome of the "helper" bacterium Alteromonas in co-culture with picocyanobacteria.

ABSTRACT: Many microbial photoautotrophs depend on heterotrophic bacteria for accomplishing essential functions. Environmental changes, however, could alter or eliminate such interactions. We investigated the effects of changing pCO₂ on gene transcription in co-cultures of 3 strains of picocyanobacteria (Synechococcus strains CC9311 and WH8102 and Prochlorococcus strain MIT9312) paired with the 'helper' bacterium Alteromonas macleodii EZ55. Co-culture with cyanobacteria resulted in a much higher number of up- and down-regulated genes in EZ55 than pCO₂ by itself. Pathway analysis revealed significantly different transcription of genes involved in carbohydrate metabolism, stress response, and chemotaxis, with different patterns of up- or down-regulation in co-culture with differe

SUBMITTER: Barreto Filho MM 

PROVIDER: S-EPMC9723591 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature