Modulation of abscisic acid signal transduction and biosynthesis by an Sm-like protein in Arabidopsis

被引：257

作者：

Xiong, LM

Gong, ZZ

Rock, CD

Subramanian, S

Guo, Y

Xu, WY

Galbraith, D

Zhu, JK ^{[1
]}

机构：

[1] Univ Arizona, Dept Plant Sci, Tucson, AZ 85721 USA

[2] Hong Kong Univ Sci & Technol, Dept Biol, Kowloon, Hong Kong, Peoples R China

来源：

DEVELOPMENTAL CELL | 2001年 / 1卷 / 06期

关键词：

D O I：

10.1016/S1534-5807(01)00087-9

中图分类号：

Q2 [细胞生物学];

学科分类号：

071009 ; 090102 ;

摘要：

The phytohormone abscisic acid (ABA) regulates plant growth and development as well as stress tolerance. The Arabidopsis sad1 (supersensitive to ABA and drought) mutation increases plant sensitivity to drought stress and ABA in seed germination, root growth, and the expression of some stress-responsive genes. sad1 plants are also defective in the positive feedback regulation of ABA biosynthesis genes by ABA and are impaired in drought stress induction of ABA biosynthesis. SAD1 encodes a polypeptide similar to multifunctional Sm-like snRNP proteins that are required for mRNA splicing, export, and degradation. These results suggest a critical role for mRNA metabolism in the control of ABA signaling as well as in the regulation of ABA homeostasis.

引用

页码：771 / 781

页数：11

共 36 条

[1] Role of Arabidopsis MYC and MYB homologs in drought- and abscisic acid-regulated gene expression [J].