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Water deficits uncouple growth from photosynthesis, increase C content, and modify the relationships between C and growth in sink organs

hal.structure.identifierÉcophysiologie des Plantes sous Stress environnementaux [LEPSE]
dc.contributor.authorMULLER, Bertrand
hal.structure.identifierÉcophysiologie des Plantes sous Stress environnementaux [LEPSE]
dc.contributor.authorPANTIN, Florent
hal.structure.identifierUnité de recherche Plantes et Systèmes de Culture Horticoles [PSH]
dc.contributor.authorGÉNARD, Michel
hal.structure.identifierÉcophysiologie des Plantes sous Stress environnementaux [LEPSE]
dc.contributor.authorTURC, Olivier
hal.structure.identifierÉcophysiologie des Plantes sous Stress environnementaux [LEPSE]
dc.contributor.authorFREIXES, Sandra
hal.structure.identifierMax Planck Institute of Molecular Plant Physiology [MPI-MP]
dc.contributor.authorPIQUES, Maria
hal.structure.identifierBiologie du fruit et pathologie [BFP]
dc.contributor.authorGIBON, Yves
dc.date.issued2011
dc.identifier.issn0022-0957
dc.description.abstractEnIn plants, carbon (C) molecules provide building blocks for biomass production, fuel for energy, and exert signalling roles to shape development and metabolism. Accordingly, plant growth is well correlated with light interception and energy conversion through photosynthesis. Because water deficits close stomata and thus reduce C entry, it has been hypothesised that droughted plants are under C starvation and their growth under C limitation. In this review, these points are questioned by combining literature review with experimental and modelling illustrations in various plant organs and species. First, converging evidence is gathered from the literature that water deficit generally increases C concentration in plant organs. The hypothesis is raised that this could be due to organ expansion (as a major C sink) being affected earlier and more intensively than photosynthesis (C source) and metabolism. How such an increase is likely to interact with C signalling is not known. Hence, the literature is reviewed for possible links between C and stress signalling that could take part in this interaction. Finally, the possible impact of water deficit-induced C accumulation on growth is questioned for various sink organs of several species by combining published as well as new experimental data or data generated using a modelling approach. To this aim, robust correlations between C availability and sink organ growth are reported in the absence of water deficit. Under water deficit, relationships weaken or are modified suggesting release of the influence of C availability on sink organ growth. These results are interpreted as the signature of a transition from source to sink growth limitation under water deficit.
dc.language.isoen
dc.publisherOxford University Press (OUP)
dc.subjectMODEL
dc.subjectSOURCE LIMITATION
dc.subjectRELATION SOURCE-PUITS
dc.subjectECOPHYSIOLOGIE
dc.subjectBIOLOGIE DU DEVELOPPEMENT
dc.subject.enC METABOLISM
dc.subject.enC SIGNALLING
dc.subject.enGROWTH
dc.subject.enSINK LIMITATION
dc.subject.enSTARCH
dc.subject.enSUGAR
dc.subject.enWATER DEFICIT
dc.title.enWater deficits uncouple growth from photosynthesis, increase C content, and modify the relationships between C and growth in sink organs
dc.typeArticle de revue
dc.identifier.doi10.1093/jxb/erq438
dc.subject.halSciences du Vivant [q-bio]/Biologie végétale/Botanique
bordeaux.journalJournal of Experimental Botany
bordeaux.page1715-1729
bordeaux.volume62
bordeaux.issue6
bordeaux.peerReviewedoui
hal.identifierhal-02650675
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02650675v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Experimental%20Botany&rft.date=2011&rft.volume=62&rft.issue=6&rft.spage=1715-1729&rft.epage=1715-1729&rft.eissn=0022-0957&rft.issn=0022-0957&rft.au=MULLER,%20Bertrand&PANTIN,%20Florent&G%C3%89NARD,%20Michel&TURC,%20Olivier&FREIXES,%20Sandra&rft.genre=article


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