Closely related phytoplankton species produce similar suites of dissolved organic matter
Name
Becker-2014-Closely related phyt.pdf
Size
1.2 MB
Format
Adobe PDF
Checksum (MD5)
61c471aba377cb152c9a5fed43636ad9
Author(s)
Becker, Jamie William
Berube, Paul M.
Follett, Christopher
Waterbury, John B.
Chisholm, Sallie (Penny)
Repeta, Daniel J.
DeLong, Edward Francis
Date Issued
March 2014
Journal
Frontiers in Microbiology
Publisher
Frontiers Research Foundation
Citation
Becker, Jamie W., Paul M. Berube, Christopher L. Follett, John B. Waterbury, Sallie W. Chisholm, Edward F. DeLong, and Daniel J. Repeta. “Closely Related Phytoplankton Species Produce Similar Suites of Dissolved Organic Matter.” Frontiers in Microbiology 5 (March 28, 2014).
Version
Final published version
Abstract
Production of dissolved organic matter (DOM) by marine phytoplankton supplies the majority of organic substrate consumed by heterotrophic bacterioplankton in the sea. This production and subsequent consumption converts a vast quantity of carbon, nitrogen, and phosphorus between organic and inorganic forms, directly impacting global cycles of these biologically important elements. Details regarding the chemical composition of DOM produced by marine phytoplankton are sparse, and while often assumed, it is not currently known if phylogenetically distinct groups of marine phytoplankton release characteristic suites of DOM. To investigate the relationship between specific phytoplankton groups and the DOM they release, hydrophobic phytoplankton-derived dissolved organic matter (DOMP) from eight axenic strains was analyzed using high-performance liquid chromatography coupled to mass spectrometry (HPLC-MS). Identification of DOM features derived from Prochlorococcus, Synechococcus, Thalassiosira, and Phaeodactylum revealed DOMP to be complex and highly strain dependent. Connections between DOMP features and the phylogenetic relatedness of these strains were identified on multiple levels of phylogenetic distance, suggesting that marine phytoplankton produce DOM that in part reflects its phylogenetic origin. Chemical information regarding the size and polarity ranges of features from defined biological sources was also obtained. Our findings reveal DOMP composition to be partially conserved among related phytoplankton species, and implicate marine DOM as a potential factor influencing microbial diversity in the sea by acting as a link between autotrophic and heterotrophic microbial community structures.
MIT Department
Massachusetts Institute of Technology. Department of Biological Engineering
Massachusetts Institute of Technology. Department of Biology
Massachusetts Institute of Technology. Department of Civil and Environmental Engineering
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.3389/fmicb.2014.00111
