Nighttime transpiration represents a negligible part of water loss and does not increase the risk of water stress in grapevine

Autor: Dayer, Silvina, Herrera, Jose Carlos, Dai, Zhanwu, Burlett, Régis, Lamarque, Laurent, Delzon, Sylvain, Bortolami, Giovanni, Cochard, Hervé, Gambetta, Grégory
Přispěvatelé: Ecophysiologie et Génomique Fonctionnelle de la Vigne (UMR EGFV), Université de Bordeaux (UB)-Institut des Sciences de la Vigne et du Vin (ISVV)-Ecole Nationale Supérieure des Sciences Agronomiques de Bordeaux-Aquitaine (Bordeaux Sciences Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), University of Natural Resources and Life Sciences (BOKU), Beijing Key Laboratory of Grape Science and Enology/CAS Key Laboratory of Plant Resource, Institute of Botany [Beijing] (IB-CAS), Chinese Academy of Sciences [Beijing] (CAS)-Chinese Academy of Sciences [Beijing] (CAS), Biodiversité, Gènes & Communautés (BioGeCo), Université de Bordeaux (UB)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Departement des sciences de l’environnement [Trois-Rivieres], Université du Québec à Trois-Rivières (UQTR), Santé et agroécologie du vignoble (UMR SAVE), Laboratoire de Physique et Physiologie Intégratives de l’Arbre en environnement Fluctuant (PIAF), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Clermont Auvergne (UCA), French Ministry of Agriculture, Agrifood, and Forestry (FranceAgriMer and CNIV) within the PHYSIOPATH project (program Plan National Deperissement du Vignoble)22001150-1506ERA-NETARIMNET2 projectOpportunities for an Environmental-friendly Viticulture: EnViRoS, ANR-10-EQPX-0016,XYLOFOREST,Plateforme d'Innovation ' Forêt-Bois-Fibre-Biomasse du Futur '(2010), ANR-10-IDEX-0003,IDEX BORDEAUX,Initiative d'excellence de l'Université de Bordeaux(2010), Universität für Bodenkultur Wien = University of Natural Resources and Life [Vienne, Autriche] (BOKU)
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Plant, Cell and Environment
Plant, Cell and Environment, Wiley, 2021, 44 (2), pp.387-398. ⟨10.1111/pce.13923⟩
Plant, Cell & Environment
Plant, Cell and Environment, 2021, 44 (2), pp.387-398. ⟨10.1111/pce.13923⟩
ISSN: 0140-7791
1365-3040
DOI: 10.1111/pce.13923⟩
Popis: Nighttime transpiration has been previously reported as a significant source of water loss in many species; however, there is a need to determine if this trait plays a key role in the response to drought. This study aimed to determine the magnitude, regulation and relative contribution to whole plant water‐use, of nighttime stomatal conductance (g night) and transpiration (E night) in grapevine (Vitis vinifera L.). Our results showed that nighttime water loss was relatively low compared to daytime transpiration, and that decreases in soil and plant water potentials were mainly explained by daytime stomatal conductance (g day) and transpiration (E day). Contrary to E day, E night did not respond to VPD and possible effects of an innate circadian regulation were observed. Plants with higher g night also exhibited higher daytime transpiration and carbon assimilation at midday, and total leaf area, suggesting that increased g night may be linked with daytime behaviors that promote productivity. Modeling simulations indicated that g night was not a significant factor in reaching critical hydraulic thresholds under scenarios of either extreme drought, or time to 20% of soil relative water content. Overall, this study suggests that g night is not significant in exacerbating the risk of water stress and hydraulic failure in grapevine.
Our study demonstrates that in grapevine (Vitis vinifera L.), nighttime water loss is not significant in exacerbating the risk of water stress, and in addition, we offer evidence that it may be positively linked to daytime productivity.
Databáze: OpenAIRE
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