Transcriptional Control in Marine Copiotrophic and Oligotrophic Bacteria with Streamlined Genomes.

ABSTRACT:

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Bacteria often respond to environmental stimuli using transcriptional control, but this may not be the case for marine bacteria such as "Candidatus Pelagibacter ubique," a cultivated representative of the SAR11 clade, the most abundant organism in the ocean. This bacterium has a small, streamlined genome and an unusually low number of transcriptional regulators, suggesting that transcriptional control is low in Pelagibacter and limits its response to environmental conditions. Transcriptome sequencing during batch culture growth revealed that only 0.1% of protein-encoding genes appear to be under transcriptional control in Pelagibacter and in another oligotroph (SAR92) whereas >10% of genes were under transcriptional control in the copiotrophs Polaribacter sp. strain MED1

SUBMITTER: Cottrell MT 

PROVIDER: S-EPMC5038029 | biostudies-literature | 2016 Oct

REPOSITORIES: biostudies-literature