Rapid Adjustment of Guard-Cell Abscisic Acid Levels to Current Leaf-Water Status | Zendy

Michael J. Harris | Zendy; William H. Outlaw | Zendy

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Rapid Adjustment of Guard-Cell Abscisic Acid Levels to Current Leaf-Water Status

Author(s) -

Michael J. Harris,

William H. Outlaw

Publication year - 1991

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.95.1.171

Subject(s) - guard cell , abscisic acid , vicia faba , water stress , coast guard , botany , horticulture , biology , chemistry , biochemistry , environmental science , environmental protection , gene

Detached broad bean (Vicia faba L.) leaflets were water stressed; within 15 minutes, guard-cell abscisic acid (ABA) concentration increased ninefold. This result eliminates the apparent discrepancy raised by reports of no correlation between initial water-stress effects on stomata and leaf ABA concentration. Six hours after stress relief, guard-cell ABA concentration was near the prestress value, which would seem to implicate other factors in stress aftereffects on stomata.

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