Drought will not leave your glass empty: Low risk of hydraulic failure revealed by long-term drought observations in world's top wine regions

被引：108

作者：

Charrier, Guillaume ^{[1
,2
,3
,4
]}

Delzon, Sylvain ^{[2
]}

Domec, Jean-Christophe ^{[3
]}

Zhang, Li ^{[1
]}

Delmas, Chloe E. L. ^{[5
]}

Merlin, Isabelle ^{[1
]}

Corso, Deborah ^{[2
]}

King, Andrew ^{[6
]}

Ojeda, Hernan ^{[7
]}

Ollat, Nathalie ^{[1
]}

Prieto, Jorge A. ^{[8
]}

Scholach, Thibaut ^{[9
]}

Skinner, Paul ^{[10
]}

van Leeuwen, Cornelis ^{[1
]}

Gambetta, Gregory A. ^{[1
]}

机构：

[1] Bordeaux Sci Agro, Inst Sci Vigne & Vin Ecophysiol & Genom Fonct Vig, UMR 1287, F-33140 Villenave Dornon, France

[2] Univ Bordeaux, INRA, Biodiversite Genes & Communautes, F-33610 Cestas, France

[3] INRA, UMR Interact Sol Plante Atmosphere 1391, Bordeaux Sci Agro, 1 Cours Gen Gaulle, F-33175 Gradignan, France

[4] Univ Clermont Auvergne, INRA, Phys & Physiol Integrat Arbre Environm Fluctuant, F-63000 Clermont Ferrand, France

[5] INRA, Bordeaux Sci Agro, Sante & Agroecol Vignoble, F-33140 Villenave Dornon, France

[6] LOrme Merisiers, Synchrotron Source Optimisee Lumiere Energie Inte, St Aubin BP48, Gif Sur Yvette, France

[7] INRA, UE0999, Unite Expt Pech Rouge, F-11430 Gruissan, France

[8] Inst Nacl Tecnol Agr, Estn Expt Agr Mendoza, RA-5507 Mendoza, Argentina

[9] Fruit Sci SAS, MIBI 672 Rue Mas de Verchant, F-34000 Montpellier, France

[10] Terra Spase, 345 La Fata St,Suite D, St Helena, CA 94574 USA

来源：

SCIENCE ADVANCES | 2018年 / 4卷 / 01期

关键词：

STOMATAL CONDUCTANCE; ANISOHYDRIC BEHAVIOR; XYLEM VULNERABILITY; EVAPORATIVE DEMAND; GAS-EXCHANGE; WATER; GRAPEVINE; CAVITATION; CONDUCTIVITY; RESISTANCE;

D O I：

10.1126/sciadv.aao6969

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Grapevines are crops of global economic importance that will face increasing drought stress because many varieties are described as highly sensitive to hydraulic failure as frequency and intensity of summer drought increase. We developed and used novel approaches to define water stress thresholds for preventing hydraulic failure, which were compared to the drought stress experienced over a decade in two of the world's top wine regions, Napa and Bordeaux. We identified the physiological thresholds for drought-induced mortality in stems and leaves and found small intervarietal differences. Long-term observations in Napa and Bordeaux revealed that grapevines never reach their lethal water-potential thresholds under seasonal droughts, owing to a vulnerability segmentation promoting petiole embolism and leaf mortality. Our findings will aid farmers in reducing water use without risking grapevine hydraulic integrity.

引用

页数：9

共 44 条

[1] A global overview of drought and heat-induced tree mortality reveals emerging climate change risks for forests [J].