Cytoskeletal inhibitors suppress the stomatal opening of Vicia faba L. induced by fusicoccin and IAA

文献类型: 外文期刊

第一作者: Huang, RF

作者: Huang, RF;Wang, XC;Lou, CH

作者机构:

关键词: Microtubules;Microfilaments;Fusicoccin (fc);Indoleacetic acid (iaa);Stomatal opening;Water channel proteins;Guard-cells;Abscisic-acid;Dinitroaniline herbicide;Plasma-membrane;Actin-filaments;Plant;Microtubules;Wall;Transduction

期刊名称:PLANT SCIENCE ( 影响因子:4.729; 五年影响因子:5.132 )

ISSN:

年卷期:

页码:

收录情况: SCI

摘要: Stomatal movement is governed by osmotic potential, in which K+ concentration plays the dominant role. Our previous work has shown that both microtubules and microfilaments are involved in regulating stomatal movement. In the present investigation the relationships between cytoskeletal components and K+ fluxes in stomatal opening were addressed by using fusicoccin (FC), indoleacetic acid (IAA), and cytoskeletal inhibitors to treat both epidermal strips and protoplasts of guard cells. The results revealed that FC and IAA induced stomatal opening with or without KCI in the dark. Also FC or IAA induced guard cell protoplast swelling in the dark even without added KCI. However, the induction was partially suppressed when strips and protoplasts were pretreated with cytochalasin B (CB), an inhibitor of F-actin polymerization, or oryzalin, an inhibitor of plant microtubule polymerization. Thus our preliminary results indicate for the first time that microtubules and microfilaments can affect stomatal opening independently of K+ fluxes. (C) 2000 Published by Elsevier Science Ireland Ltd. All rights reserved. [References: 33]

分类号: Q94

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