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dc.contributor.authorArandia-Gorostidi, Nestor
dc.contributor.authorGonzalez, Jose M.
dc.contributor.authorHuete-Stauffer, Tamara M.
dc.contributor.authorAnsari, I, Mohd
dc.contributor.authorMoran, Xose Anxelu G.
dc.contributor.authorAlonso-Saez, Laura
dc.date.accessioned2021-07-02T08:12:27Z-
dc.date.available2021-07-02T08:12:27Z-
dc.date.issued2020
dc.identifierISI:000554482300001
dc.identifier.citationENVIRONMENTAL MICROBIOLOGY, 2020, 22, 3823-3837
dc.identifier.issn1462-2912
dc.identifier.urihttp://dspace.azti.es/handle/24689/1099-
dc.description.abstractDespite the widespread distribution of proteorhodopsin (PR)-containing bacteria in the oceans, the use of light-derived energy to promote bacterial growth has only been shown in a few bacterial isolates, and there is a paucity of data describing the metabolic effects of light on environmental photoheterotrophic taxa. Here, we assessed the effects of light on the taxonomic composition, cell integrity and growth responses of microbial communities in monthly incubations between spring and autumn under different environmental conditions. The photoheterotrophs expressing PRin situwere dominated byPelagibacteralesand SAR116 in July and November, while members ofEuryarchaeota,GammaproteobacteriaandBacteroidetesdominated the PR expression in spring. Cell-membrane integrity decreased under dark conditions throughout most of the assessment, with maximal effects in summer, under low-nutrient conditions. A positive effect of light on growth was observed in one incubation (out of nine), coinciding with a declining phytoplankton bloom. Light-enhanced growth was found inGammaproteobacteria(Alteromonadales) andBacteroidetes(PolaribacterandTenacibaculum). Unexpectedly, somePelagibacteralesalso exhibited higher growth rates under light conditions. We propose that the energy harvested by PRs helps to maintain cell viability in dominant coastal photoheterotrophic oligotrophs while promoting the growth of some widespread taxa benefiting from the decline of phytoplankton blooms.
dc.language.isoEnglish
dc.publisherWILEY
dc.subjectANOXYGENIC PHOTOTROPHIC BACTERIA
dc.subjectMAJOR PHYLOGENETIC GROUPS
dc.subjectMARINE-BACTERIA
dc.subjectPROTEORHODOPSIN GENES
dc.subjectSUNLIGHT SENSITIVITY
dc.subjectSAR11 BACTERIA
dc.subjectSOUTHERN BAY
dc.subjectNORTH-SEA
dc.subjectBACTERIOPLANKTON
dc.subjectABUNDANCE
dc.titleLight supports cell-integrity and growth rates of taxonomically diverse coastal photoheterotrophs
dc.typeArticle
dc.identifier.journalENVIRONMENTAL MICROBIOLOGY
dc.format.page3823-3837
dc.format.volume22
dc.contributor.funderBasque Government in the Spanish Ministry of Economy and Competitiveness (MINECO) [RYC-2012-11404, CTM-2010-15840]
dc.contributor.funderSpanish Ministry of Economy and Competitiveness [CTM2016-80095-C2-2-R]
dc.identifier.e-issn1462-2920
dc.identifier.doi10.1111/1462-2920.15158
Appears in Publication types:Artículos científicos



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