Microscale ecology regulates particulate organic matter turnover in model marine microbial communities

Nature Communications
Tim N EnkeOtto X Cordero

Abstract

The degradation of particulate organic matter in the ocean is a central process in the global carbon cycle, the mode and tempo of which is determined by the bacterial communities that assemble on particle surfaces. Here, we find that the capacity of communities to degrade particles is highly dependent on community composition using a collection of marine bacteria cultured from different stages of succession on chitin microparticles. Different particle degrading taxa display characteristic particle half-lives that differ by ~170 h, comparable to the residence time of particles in the ocean's mixed layer. Particle half-lives are in general longer in multispecies communities, where the growth of obligate cross-feeders hinders the ability of degraders to colonize and consume particles in a dose dependent manner. Our results suggest that the microscale community ecology of bacteria on particle surfaces can impact the rates of carbon turnover in the ocean.

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Citations

Nov 20, 2018·Environmental Microbiology·John Paul BalmonteCarol Arnosti
Nov 2, 2018·Journal of the Royal Society, Interface·Simone Cenci, Serguei Saavedra
Nov 2, 2019·Proceedings of the National Academy of Sciences of the United States of America·Ali EbrahimiOtto X Cordero
Nov 25, 2019·Environmental Microbiology·Nagissa MahmoudiAnn Pearson
Jun 5, 2019·Microbiome·Robyn J WrightJoseph A Christie-Oleza
Jun 27, 2019·Proceedings of the National Academy of Sciences of the United States of America·Benjamin R WucherCarey D Nadell
Mar 20, 2020·Nature Communications·Leonora S BittlestonOtto X Cordero
May 16, 2019·Soft Matter·Rami Abi-AklTal Cohen
May 18, 2019·Proceedings of the National Academy of Sciences of the United States of America·Stilianos LoucaMichael Doebeli
Nov 13, 2018·Frontiers in Microbiology·Mina Bižić-IonescuHans-Peter Grossart
Feb 13, 2019·MSystems·Robin TeconDavid R Johnson
Jan 6, 2021·Nature Microbiology·Sonja BlascheKiran Raosaheb Patil
Dec 22, 2020·Frontiers in Microbiology·Yu-Ming Cai
Apr 8, 2021·Current Biology : CB·Benjamin R WucherCarey D Nadell
Sep 5, 2020·Environmental Science & Technology·Robyn Joanna WrightJoseph Christie-Oleza

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Datasets Mentioned

BETA
PRJNA414740

Methods Mentioned

BETA
phosphotransferase

Software Mentioned

MATLAB
ImageJ
Fiji
EVOS
RAST

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