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

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dc.contributor.author Kaur, A.
dc.contributor.author Hernandez-Fernaud, J.R.
dc.contributor.author Aguilo-Ferretjans, M.M.
dc.contributor.author Wellington, E.M.
dc.contributor.author Christie-Oleza, J.A.
dc.date.accessioned 2021-11-15T14:20:39Z
dc.date.available 2021-11-15T14:20:39Z
dc.identifier.uri http://hdl.handle.net/11201/156139
dc.description.abstract [eng] 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.
dc.format application/pdf
dc.relation.isformatof Versió preprint del document publicat a: https://doi.org/10.1111/1462-2920.14012
dc.relation.ispartof Environmental Microbiology, 2018, vol. 20, num. 2, p. 785-799
dc.rights (c) Society for Applied Microbiology and Blackwell Publishing, 2018
dc.subject.classification 57 - Biologia
dc.subject.other 57 - Biological sciences in general
dc.title 100 days of marine Synechococcus - Ruegeria pomeroyi interaction, a detailed analysis of the exoproteome.
dc.type info:eu-repo/semantics/article
dc.type info:eu-repo/semantics/submittedVersion
dc.date.updated 2021-11-15T14:20:40Z
dc.rights.accessRights info:eu-repo/semantics/openAccess
dc.identifier.doi https://doi.org/10.1111/1462-2920.14012

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