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Stress-induced stomatal closure in relation to compartmentation and redistribution of ABA in intact leaves of Vicia faba L.

Wang Xuechen, Jia Wensuo

College of Biological Sciences, Beijing Agricultural University. Beijing 100094

Abstract

With immunogold electron microscopy stress-induced redistribution of ABA in leaves has been studied. Water stress could lead to an evidient increase in ABA content in the apoplast of the epidermis, while ABA content in mesophyll cells remained constant at the earlier stage of water stress compared to that of controls (Plate I.1-4; Plante II. 5,6). Guard cells contained large amount of ABA even before water stress, which was mainly located in chloroplasts and nuclei, and the ventral wall and the near outer wall, and inner wall slso contained huge amount of ABA, but there was little ABA in dorsal wall (Plate I. 5-7; Plante II. 1-2).

Key words: Water stress;Abscisic acid;Immunogold electron microscopy;Guard cell

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Citing This Article：

Wang Xuechen, Jia Wensuo. Stress-induced stomatal closure in relation to compartmentation and redistribution of ABA in intact leaves of Vicia faba L.. Acta Physiol Sin 1995; 47 (4): (in Chinese with English abstract).