Diatom Modulation of Select Bacteria Through Use of Two Unique Secondary Metabolites
Diatom modulation of select bacteria through use of two unique secondary metabolites Ahmed A. Shibla, Ashley Isaaca,b, Michael A. Ochsenkühna, Anny Cárdenasc,d, Cong Feia, Gregory Behringera, Marc Arnouxe, Nizar Droue, Miraflor P. Santosa,1, Kristin C. Gunsaluse,f, Christian R. Voolstrac,d, and Shady A. Amina,2 aMarine Microbial Ecology Laboratory, Biology Program, New York University Abu Dhabi, Abu Dhabi 129188, United Arab Emirates; bInternational Max Planck Research School of Marine Microbiology, University of Bremen, Bremen 28334, Germany; cDepartment of Biology, University of Konstanz, Konstanz 78467, Germany; dRed Sea Research Center, Biological and Environmental Sciences and Engineering Division (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia; eCenter for Genomics and Systems Biology, New York University Abu Dhabi, Abu Dhabi 129188, United Arab Emirates; and fCenter for Genomics and Systems Biology, Department of Biology, New York University, New York, NY 10003 Edited by Edward F. DeLong, University of Hawaii at Manoa, Honolulu, HI, and approved September 10, 2020 (received for review June 12, 2020) Unicellular eukaryotic phytoplankton, such as diatoms, rely on shown to heavily rely on phycosphere DOM to support their microbial communities for survival despite lacking specialized growth (14, 15) and must use motility, chemotaxis, and/or at- compartments to house microbiomes (e.g., animal gut). Microbial tachment to chase and colonize the phycosphere (16). Recent communities have been widely shown to benefit from diatom research has shown that a variety of interactions spanning mu- excretions that accumulate within the microenvironment sur- tualism, commensalism, and parasitism occur between diatoms rounding phytoplankton cells, known as the phycosphere.
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