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- W2736699979 abstract "In their role as primary producers, marine phytoplankton modulate heterotrophic bacterial activities through differences in the types and amounts of organic matter they release. This study investigates the transcriptional response of bacterium Ruegeria pomeroyi, a member of the Roseobacter clade known to affiliate with diverse phytoplankton groups in the ocean, during a shift in phytoplankton taxonomy. The bacterium was initially introduced into a culture of the dinoflagellate Alexandrium tamarense, and then experienced a change in phytoplankton community composition as the diatom Thalassiosira pseudonana gradually outcompeted the dinoflagellate. Samples were taken throughout the 30-day experiment to track shifts in bacterial gene expression informative of metabolic and ecological interactions. Transcriptome data indicate fundamental differences in the exometabolites released by the two phytoplankton. During growth with the dinoflagellate, gene expression patterns indicated that the main sources of carbon and energy for R. pomeroyi were dimethysulfoniopropionate (DMSP), taurine, methylated amines, and polyamines. During growth with the diatom, dihydroxypropanesulfonate (DHPS), xylose, ectoine, and glycolate instead appeared to fuel the bulk of bacterial metabolism. Expression patterns of genes for quorum sensing, gene transfer agent, and motility suggest that bacterial processes related to cell communication and signaling differed depending on which phytoplankton species dominated the co-culture. A remodeling of the R. pomeroyi transcriptome implicating more than a quarter of the genome occurred through the change in phytoplankton regime." @default.
- W2736699979 created "2017-07-31" @default.
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- W2736699979 date "2017-07-21" @default.
- W2736699979 modified "2023-10-18" @default.
- W2736699979 title "Bacterial transcriptome remodeling during sequential co-culture with a marine dinoflagellate and diatom" @default.
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- W2736699979 doi "https://doi.org/10.1038/ismej.2017.117" @default.
- W2736699979 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/5702724" @default.
- W2736699979 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/28731474" @default.
- W2736699979 hasPublicationYear "2017" @default.
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