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Bryophyte gas-exchange dynamics along varying hydration status reveal a significant carbonyl sulphide (COS) sink in the dark and COS source in the light

hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorGIMENO, Teresa E.
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorOGÉE, Jérôme
hal.structure.identifierDepartment Plant Sciences
dc.contributor.authorROYLES, Jessica
hal.structure.identifierBiologie du fruit et pathologie [BFP]
dc.contributor.authorGIBON, Yves
hal.structure.identifierDepartment of Ecosystem Science & Management
dc.contributor.authorWEST, Jason B.
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorBURLETT, Régis
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorJONES, Sam P.
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorSAUZE, Joana
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorWOHL, Steven
hal.structure.identifierBiologie du fruit et pathologie [BFP]
dc.contributor.authorBENARD, Camille
hal.structure.identifierInstitut de Biosciences et Biotechnologies d'Aix-Marseille (ex-IBEB) [BIAM]
hal.structure.identifierProtéines de Protection des Végétaux [PPV]
hal.structure.identifierPhotosynthèse & Environnement [P&E]
dc.contributor.authorGENTY, Bernard
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorWINGATE, Lisa
dc.date.issued2017
dc.identifier.issn0028-646X
dc.description.abstractEnCarbonyl sulphide (COS) is a potential tracer of gross primary productivity (GPP), assuming a unidirectional COS flux into the vegetation that scales with GPP. However, carbonic anhydrase (CA), the enzyme that hydrolyses COS, is expected to be light independent, and thus plants without stomata should continue to take up COS in the dark. We measured net CO2 (A(C) ) and COS (A(S) ) uptake rates from two astomatous bryophytes at different relative water contents (RWCs), COS concentrations, temperatures and light intensities. We found large A(S) in the dark, indicating that CA activity continues without photosynthesis. More surprisingly, we found a nonzero COS compensation point in light and dark conditions, indicating a temperature-driven COS source with a Q10 (fractional change for a 10°C temperature increase) of 3.7. This resulted in greater A(S) in the dark than in the light at similar RWC. The processes underlying such COS emissions remain unknown. Our results suggest that ecosystems dominated by bryophytes might be strong atmospheric sinks of COS at night and weaker sinks or even sources of COS during daytime. Biotic COS production in bryophytes could result from symbiotic fungal and bacterial partners that could also be found on vascular plants.
dc.description.sponsorshipEtude des mécanismes de régulation de l'anhydrase carbonique et des flux de COS et CO18O dans les écosystèmes terrestres - ANR-13-BS06-0005
dc.language.isoen
dc.publisherWiley
dc.rights.urihttp://creativecommons.org/licenses/by-sa/
dc.subjectsulfure de carbonyle
dc.subjectanhydrase carbonique
dc.subjectmarchantia polymorpha
dc.subject.enmoss
dc.subject.enliverwort
dc.subject.endesiccation
dc.subject.encarbohydrates
dc.subject.encarbonic anhydrase
dc.subject.enrespiration
dc.subject.enprotein
dc.subject.enScleropodium purum
dc.title.enBryophyte gas-exchange dynamics along varying hydration status reveal a significant carbonyl sulphide (COS) sink in the dark and COS source in the light
dc.typeArticle de revue
dc.identifier.doi10.1111/nph.14584
dc.subject.halSciences du Vivant [q-bio]
dc.description.sponsorshipEuropeCarbonic anhydrase: where the CO2, COS and H2O cycles meet
bordeaux.journalNew Phytologist
bordeaux.page965-976
bordeaux.volume215
bordeaux.issue3
bordeaux.peerReviewedoui
hal.identifierhal-01606784
hal.version1
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01606784v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=New%20Phytologist&rft.date=2017&rft.volume=215&rft.issue=3&rft.spage=965-976&rft.epage=965-976&rft.eissn=0028-646X&rft.issn=0028-646X&rft.au=GIMENO,%20Teresa%20E.&OG%C3%89E,%20J%C3%A9r%C3%B4me&ROYLES,%20Jessica&GIBON,%20Yves&WEST,%20Jason%20B.&rft.genre=article


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