Tag Archives: Inomura

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A Marine Symbiosis Allows a Better Understanding of Our Cells Evolution

Human cells, as well as cells of animals, plants, fungi, and other eukaryotic organisms, originally emerged hundreds of millions of years ago through the symbiotic association of some primitive bacteria that, until then, had lived independently. This represented an unprecedented leap in the complexity of life, where some bacteria, after having resided within cells for a long time, eventually transitioned into becoming organelles of these cells. This transition allowed for the compartmentalization and control of bacterial-derived functions within the eukaryotic cell. CBIOMES Mick Follows contributes to a new paper in the journal Cell.
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Fellow Travelers

Observations suggest diazotrophs like Crocosphaera and Trichodesmium pay for their ability to fix nitrogen with a very low growth rate, yet diatom-diazotroph associations or DDAs exhibit high growth rates. CBIOMES postdoctoral fellow Chris Follett and co-authors use a cell flux model to test the hypothesis that diatom-diazotroph associations or DDAs grow faster than unpaired diazotrophs because the diatoms in DDAs provide organic carbon to their diazotroph guests that boost their growth rate. Continue reading Fellow Travelers