An alpha-expansin, VfEXPA1, is involved in regulation of stomatal movement in Vicia faba L.

文献类型： 外文期刊

第一作者： Wei PengCheng

作者： Wei PengCheng;Chen Su;Zhang XiuQing;Zhao Ping;Xiong YanMei;Chen Jia;Wang XueChen;Wei PengCheng;Wang WenLong

作者机构：

关键词： alpha-expansin;stomatal opening;guard cell wall;VfEXPA1;Vicia faba

期刊名称：CHINESE SCIENCE BULLETIN （ 影响因子：1.649； 五年影响因子：1.738 ）

ISSN： 1001-6538

年卷期： 2011 年 56 卷 33 期

页码：

收录情况： SCI

摘要： The wall loosening of guard cells differs from other types of plant cells. However, the regulation of wall loosening during stomatal movement is poorly understood. VfEXPA1 is an alpha-expansin gene cloned from Vicia faba epidermal strips. Expression of VfEXPA1 is regulated by darkness and submergence, and is not affected by light and abscisic acid (ABA). In situ hybridization showed that VfEXPA1 is expressed primarily in the guard cells. Overexpression of VfEXPA1 in transgenic tobacco accelerated light-induced stomatal opening, and increased both transpiration and photosynthetic rates under favorable growth conditions. Our results indicate the guard cell-expressed expansin VfEXPA1 plays an important role in regulation of stomatal opening.

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