Microbial Community Structure Affects Marine Dissolved ... - Frontiers

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Apr 5, 2016 -
ORIGINAL RESEARCH published: 05 April 2016 doi: 10.3389/fmars.2016.00045

Microbial Community Structure Affects Marine Dissolved Organic Matter Composition Elizabeth B. Kujawinski 1*, Krista Longnecker 1 , Katie L. Barott 1 † , Ralf J. M. Weber 2 and Melissa C. Kido Soule 1 1 2

Edited by: Michael William Lomas, Bigelow Laboratory for Ocean Sciences, USA Reviewed by: Gordon T. Taylor, Stony Brook University, USA Jason Michel Smith, Monterey Bay Aquarium Research Institute, USA *Correspondence: Elizabeth B. Kujawinski [email protected]

Present Address: Katie L. Barott, Hawaii Institute of Marine Biology, University of Hawaii - Manoa, Kaneohe, HI, USA Specialty section: This article was submitted to Marine Biogeochemistry, a section of the journal Frontiers in Marine Science Received: 01 December 2015 Accepted: 21 March 2016 Published: 05 April 2016 Citation: Kujawinski EB, Longnecker K, Barott KL, Weber RJM and Kido Soule MC (2016) Microbial Community Structure Affects Marine Dissolved Organic Matter Composition. Front. Mar. Sci. 3:45. doi: 10.3389/fmars.2016.00045

Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA, USA, School of Biosciences, University of Birmingham, Birmingham, UK

Marine microbes are critical players in the global carbon cycle, affecting both the reduction of inorganic carbon and the remineralization of reduced organic compounds back to carbon dioxide. Members of microbial consortia all depend on marine dissolved organic matter (DOM) and in turn, affect the molecules present in this heterogeneous pool. Our understanding of DOM produced by marine microbes is biased toward single species laboratory cultures or simplified field incubations, which exclude large phototrophs and protozoan grazers. Here we explore the interdependence of DOM composition and bacterial diversity in two mixed microbial consortia from coastal seawater: a whole water community and a