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100 days of marine Synechococcus – Ruegeria pomeroyi interaction, a detailed analysis of the exoproteome

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Kaur, Amandeep, Hernandez Fernaud, Juan Ramon, Aguilo-Ferretjans, Maria del Mar, Wellington, E. M. H. and Christie-Oleza, Joseph Alexander (2017) 100 days of marine Synechococcus – Ruegeria pomeroyi interaction, a detailed analysis of the exoproteome. Environmental Microbiology, 20 (2). pp. 785-799. doi:10.1111/1462-2920.14012 ISSN 1462-2912.

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Official URL: http://doi.org/10.1111/1462-2920.14012

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Abstract

Marine phototroph and heterotroph interactions are vital in maintaining the nutrient balance in the oceans as essential nutrients need to be rapidly cycled before sinking to aphotic layers. The aim of this study was to highlight the molecular mechanisms that drive these interactions. For this we generated a detailed exoproteomic time-course analysis of a 100-day co-culture between the model marine picocyanobacterium Synechococcus sp. WH7803 and the Roseobacter strain Ruegeria pomeroyi DSS-3, both in nutrient-enriched and natural oligotrophic seawater. The proteomic data showed a transition between the initial growth phase and stable-state phase that, in the case of the heterotroph, was caused by a switch in motility attributed to organic matter availability. The phototroph adapted to seawater oligotrophy by reducing its selective leakiness, increasing the acquisition of essential nutrients, and secreting conserved proteins of unknown function. We also report a surprisingly high abundance of extracellular superoxide dismutase produced by Synechococcus and a dynamic secretion of potential hydrolytic enzyme candidates used by the heterotroph to cleave organic groups and hydrolase polymeric organic matter produced by the cyanobacterium. The time course dataset we present here will become a reference for understanding the molecular processes underpinning marine phototroph-heterotroph interactions.

Item Type: Journal Article
Subjects: Q Science > QR Microbiology
Divisions: Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- )
Library of Congress Subject Headings (LCSH): Photosynthetic bacteria, Heterotrophic bacteria, Marine microbiology
Journal or Publication Title: Environmental Microbiology
Publisher: Wiley-Blackwell Publishing Ltd.
ISSN: 1462-2912
Official Date: 23 November 2017
Dates:
DateEvent
23 November 2017Accepted
Volume: 20
Number: 2
Page Range: pp. 785-799
DOI: 10.1111/1462-2920.14012
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access (Creative Commons)
Date of first compliant deposit: 29 November 2017
Date of first compliant Open Access: 15 February 2018
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
NE/K009044/1 [NERC] Natural Environment Research Councilhttp://dx.doi.org/10.13039/501100000270
UNSPECIFIEDUniversity of Warwickhttp://dx.doi.org/10.13039/501100000741
BB/M017982/1[BBSRC] Biotechnology and Biological Sciences Research Councilhttp://dx.doi.org/10.13039/501100000268
UNSPECIFIED[EPSRC] Engineering and Physical Sciences Research Councilhttp://dx.doi.org/10.13039/501100000266
UNSPECIFIEDResearch Councils UKhttp://dx.doi.org/10.13039/501100000690
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