Evolutionary pathways for deep-sea adaptation in marine planktonic Actinobacteriota.

ABSTRACT: The deep ocean, one of the largest ecosystems on earth, is dominated by microorganisms that are keystones in the regulation of biogeochemical cycles. However, the evolutionary pathways underlying the specific adaptations required (e.g., high pressure and low temperature) by this unique niche remain understudied. Here, we analyzed the first representatives belonging to the order Acidimicrobiales, a group of marine planktonic Actinobacteriota, that specifically inhabits the aphotic zone of the oceanic water column (>200 m). Compared with their epipelagic counterparts, deep-sea representatives showed the same evolution in genome architecture with higher GC content, longer intergenic spaces as well as higher nitrogen (N-ARSC) and lower carbon (C-ARSC) content in encoded amino aci

SUBMITTER: Roda-Garcia JJ 

PROVIDER: S-EPMC10205998 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature