Deciphering associations between dissolved organic molecules and bacterial communities in a pelagic marine system

The ISME Journal
Helena OsterholzThorsten Dittmar

Abstract

Dissolved organic matter (DOM) is the main substrate and energy source for heterotrophic bacterioplankton. To understand the interactions between DOM and the bacterial community (BC), it is important to identify the key factors on both sides in detail, chemically distinct moieties in DOM and the various bacterial taxa. Next-generation sequencing facilitates the classification of millions of reads of environmental DNA and RNA amplicons and ultrahigh-resolution mass spectrometry yields up to 10 000 DOM molecular formulae in a marine water sample. Linking this detailed biological and chemical information is a crucial first step toward a mechanistic understanding of the role of microorganisms in the marine carbon cycle. In this study, we interpreted the complex microbiological and molecular information via a novel combination of multivariate statistics. We were able to reveal distinct relationships between the key factors of organic matter cycling along a latitudinal transect across the North Sea. Total BC and DOM composition were mainly driven by mixing of distinct water masses and presumably retain their respective terrigenous imprint on similar timescales on their way through the North Sea. The active microbial community, howeve...Continue Reading

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Citations

Sep 20, 2017·Environmental Science. Processes & Impacts·Keli YangWu Li
Jun 19, 2018·FEMS Microbiology Ecology·Helena OsterholzThorsten Dittmar
May 6, 2019·The ISME Journal·Mario E MuscarellaJay T Lennon
Nov 20, 2019·Proceedings of the National Academy of Sciences of the United States of America·Andrew J TanentzapThorsten Dittmar
Oct 28, 2017·Frontiers in Microbiology·Gerrit WienhausenMeinhard Simon
Jan 17, 2019·Environmental Monitoring and Assessment·Albert Rivas-UbachAlex Guenther
Aug 11, 2018·Nature Communications·Maren Zark, Thorsten Dittmar
Nov 13, 2020·Frontiers in Microbiology·Shuji GotoYouhei Yamashita
Jul 27, 2017·Environmental Science & Technology·Andrew J McCabe, William A Arnold
Jan 5, 2018·Environmental Science & Technology·Xiao-Ming LiYong-Guan Zhu
Jun 27, 2018·Environmental Science & Technology·Xiao-Tao JiangTong Zhang

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