Article
Abscisic Acid Down-Regulates Hydraulic Conductance of Grapevine Leaves in Isohydric Genotypes Only.
Plant physiology - 1 Nov 2017
Coupel-Ledru Aude, Tyerman Stephen D, Masclef Diane, Lebon Eric, Christophe Angélique, Edwards Everard J, Simonneau Thierry
Abstract excerpt
Plants evolved different strategies to cope with water stress. While isohydric species maintain their midday leaf water potential (ΨM) under soil water deficit by closing their stomata, anisohydric species maintain higher stomatal aperture and exhibit substantial reductions in ΨM It was hypothesized that isohydry is related to a locally higher sensitivity of stomata to the drought-hormone abscisic acid (ABA)....
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