Plant resistance to drought depends on timely stomatal closure
| hal.structure.identifier | Ecologie des Forêts Méditerranéennes [URFM] | |
| dc.contributor.author | MARTIN-STPAUL, Nicolas | |
| hal.structure.identifier | Biodiversité, Gènes & Communautés [BioGeCo] | |
| dc.contributor.author | DELZON, Sylvain | |
| hal.structure.identifier | Laboratoire de Physique et Physiologie Intégratives de l’Arbre en environnement Fluctuant [PIAF] | |
| dc.contributor.author | COCHARD, Hervé | |
| dc.date.issued | 2017 | |
| dc.identifier.issn | 1461-023X | |
| dc.description.abstractEn | Stomata play a significant role in the Earth’s water and carbon cycles, by regulating gaseousexchanges between the plant and the atmosphere. Under drought conditions, stomatal control oftranspiration has long been thought to be closely coordinated with the decrease in hydrauliccapacity (hydraulic failure due to xylem embolism). We tested this hypothesis by coupling a metaanalysisof functional traits related to the stomatal response to drought and embolism resistancewith simulations from a soil–plant hydraulic model. We report here a previously unreported phenomenon:the existence of an absolute limit by which stomata closure must occur to avoid rapiddeath in drought conditions. The water potential causing stomatal closure and the xylem pressureat the onset of embolism formation were equal for only a small number of species, and the differencebetween these two traits (i.e. safety margins) increased continuously with increasing embolismresistance. Our findings demonstrate the need to revise current views about the functional coordinationbetween stomata and hydraulic traits and provide a mechanistic framework for modelingplant mortality under drought conditions. | |
| dc.description.sponsorship | Plateforme d'Innovation " Forêt-Bois-Fibre-Biomasse du Futur " - ANR-10-EQPX-0016 | |
| dc.language.iso | en | |
| dc.publisher | Wiley | |
| dc.rights.uri | http://creativecommons.org/licenses/by-sa/ | |
| dc.subject | résistance à la sécheresse | |
| dc.subject | dynamique temporelle | |
| dc.subject | résistance stomatique | |
| dc.subject | aptitude à la conservation | |
| dc.subject | plante résistante | |
| dc.subject | modélisation hydraulique | |
| dc.subject | méta analyse | |
| dc.subject | trait fonctionnel | |
| dc.subject.en | Dieback | |
| dc.subject.en | drought | |
| dc.subject.en | stomata | |
| dc.subject.en | tree mortality | |
| dc.subject.en | xylem embolism | |
| dc.subject.en | storage stability | |
| dc.subject.en | metaanalysis | |
| dc.title.en | Plant resistance to drought depends on timely stomatal closure | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1111/ele.12851 | |
| dc.subject.hal | Sciences du Vivant [q-bio] | |
| bordeaux.journal | Ecology Letters | |
| bordeaux.page | 1-11 | |
| bordeaux.volume | 20 | |
| bordeaux.issue | 11 | |
| bordeaux.peerReviewed | non | |
| hal.identifier | hal-01607234 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Non spécifiée | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-01607234v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Ecology%20Letters&rft.date=2017&rft.volume=20&rft.issue=11&rft.spage=1-11&rft.epage=1-11&rft.eissn=1461-023X&rft.issn=1461-023X&rft.au=MARTIN-STPAUL,%20Nicolas&DELZON,%20Sylvain&COCHARD,%20Herv%C3%A9&rft.genre=article |
Files in this item
| Files | Size | Format | View |
|---|---|---|---|
|
There are no files associated with this item. |
|||