Neither xylem collapse, cavitation, or changing leaf conductance drive stomatal closure in wheat.
| dc.rights.license | open | en_US |
| dc.contributor.author | CORSO, Déborah | |
| hal.structure.identifier | Biodiversité, Gènes & Communautés [BioGeCo] | |
| dc.contributor.author | DELZON, Sylvain | |
| hal.structure.identifier | Biodiversité, Gènes & Communautés [BioGeCo] | |
| hal.structure.identifier | Ecophysiologie et Génomique Fonctionnelle de la Vigne [UMR EGFV] | |
| dc.contributor.author | LAMARQUE, Laurent J | |
| dc.contributor.author | COCHARD, Hervé | |
| dc.contributor.author | TORRES-RUIZ, José M | |
| dc.contributor.author | KING, Andrew | |
| dc.contributor.author | BRODRIBB, Timothy | |
| dc.date.accessioned | 2020-09-10T11:04:29Z | |
| dc.date.available | 2020-09-10T11:04:29Z | |
| dc.date.issued | 2020-01-01 | |
| dc.identifier.issn | 1365-3040 | en_US |
| dc.identifier.uri | https://oskar-bordeaux.fr/handle/20.500.12278/11285 | |
| dc.description.abstractEn | Identifying the drivers of stomatal closure and leaf damage during stress in grasses is a critical prerequisite for understanding crop resilience. Here, we investigated whether changes in stomatal conductance (g ) during dehydration were associated with changes in leaf hydraulic conductance (K ), xylem cavitation, xylem collapse, and leaf cell turgor in wheat (Triticum aestivum). During soil dehydration, the decline of g was concomitant with declining K under mild water stress. This early decline of leaf hydraulic conductance was not driven by cavitation, as the first cavitation events in leaf and stem were detected well after K had declined. Xylem vessel deformation could only account for <5% of the observed decline in leaf hydraulic conductance during dehydration. Thus, we concluded that changes in the hydraulic conductance of tissues outside the xylem were responsible for the majority of K decline during leaf dehydration in wheat. However, the contribution of leaf resistance to whole plant resistance was less than other tissues (<35% of whole plant resistance), and this proportion remained constant as plants dehydrated, indicating that K decline during water stress was not a major driver of stomatal closure. | |
| dc.language.iso | EN | en_US |
| dc.subject.en | crops | |
| dc.subject.en | drought stress | |
| dc.subject.en | hydraulic conductance | |
| dc.title.en | Neither xylem collapse, cavitation, or changing leaf conductance drive stomatal closure in wheat. | |
| dc.title.alternative | Plant Cell Environ | en_US |
| dc.type | Article de revue | en_US |
| dc.identifier.doi | 10.1111/pce.13722 | en_US |
| dc.subject.hal | Sciences du Vivant [q-bio]/Biologie végétale | en_US |
| dc.identifier.pubmed | 31953855 | en_US |
| bordeaux.journal | Plant, Cell and Environment | en_US |
| bordeaux.page | 854-865 | en_US |
| bordeaux.volume | 43 | en_US |
| bordeaux.hal.laboratories | Ecophysiologie et Génomique Fonctionnelle de la Vigne (EGFV) - UMR 1287 | en_US |
| bordeaux.issue | 4 | en_US |
| bordeaux.institution | Bordeaux Sciences Agro | en_US |
| bordeaux.institution | Université de Bordeaux | en_US |
| bordeaux.peerReviewed | oui | en_US |
| bordeaux.inpress | non | en_US |
| bordeaux.import.source | pubmed | |
| hal.export | false | |
| workflow.import.source | pubmed | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Plant,%20Cell%20and%20Environment&rft.date=2020-01-01&rft.volume=43&rft.issue=4&rft.spage=854-865&rft.epage=854-865&rft.eissn=1365-3040&rft.issn=1365-3040&rft.au=CORSO,%20D%C3%A9borah&DELZON,%20Sylvain&LAMARQUE,%20Laurent%20J&COCHARD,%20Herv%C3%A9&TORRES-RUIZ,%20Jos%C3%A9%20M&rft.genre=article |
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