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Interaction and Signaling Between a Cosmopolitan Phytoplankton and Associated Bacteria

ABSTRACT: We isolate the cultivable microbiome of a diatom and show that different bacteria have commensal, antagonistic, or synergistic effects on the diatom. One synergistic bacterium enhances growth of the diatom by production of auxin, a phytohormone. The diatom and its synergistic bacterium appear to use auxin and tryptophan as signaling molecules that drive nutrient exchange. Detection of auxin molecules and biosynthesis gene transcripts in the Pacific Ocean suggests that these interactions are widespread in marine ecosystems.

OTHER RELATED OMICS DATASETS IN: PRJNA272345PRJNA273418

ORGANISM(S): Pseudo-nitzschia multiseries Sulfitobacter sp. SA11

PROVIDER: GSE65189 | GEO | 2015/05/29

SECONDARY ACCESSION(S): PRJNA273418

REPOSITORIES: GEO

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