GSE264347 Emergence of metabolic coupling to the heterotroph Alteromonas promotes dark survival in Prochlorococcus

Contributors : Allison Coe ; Rogier Braakman ; Steven J Biller ; Aldo Arellano ; Christina Bliem ; Nhi N Vo ; Konnor von Emster ; Elaina Thomas ; Michelle DeMers ; Claudia Steglich ; Jef Huisman ; Sallie W ChisholmSeries Type : Expression profiling by high throughput sequencingOrganism : Alteromonas macleodii ; Prochlorococcus marinus str. NATL2AProchlorococcus is found throughout the euphotic zone in the oligotrophic open ocean. Deep mixing and sinking in aggregates or while attached to particles can, however, transport cells below this sunlit zone, depriving them of light for extended periods of time and influencing their circulation via ocean currents. Viability of these cells over extended periods of darkness could shape the ecology and evolution of the Prochlorococcus collective. We have shown that when co-cultured with a heterotrophic microbe and subjected to repeated periods of extended darkness, Prochlorococcus cells develop a heritable dark-tolerant phenotype – through an apparent epigenetic mechanism – such that they survive longer periods of darkness. Here we examine this adaptation at the level of physiology and metabolism in co-cultures of dark-tolerant and parent strains of Prochlorococcus, each grown with the heterotroph Alteromonas under diel light:dark conditions. The relative abundance of Alteromonas is higher in dark-tolerant than parental co-cultures, while dark tolerant Prochlorococcus cells are also larger, contain less chlorophyll, and are ...

Source: GEO: Gene Expression Omnibus - April 23, 2024 Category: Genetics & Stem Cells Tags: Expression profiling by high throughput sequencing Alteromonas macleodii Prochlorococcus marinus str. NATL2A Source Type: research