An Arabidopsis mutant cex1 exhibits constant accumulation of jasmonate-regulated ArVSP, Thi2.1 and PDF1.2

被引：50

作者：

Xu, LH

Liu, FQ

Wang, ZL

Peng, W

Huang, RF

Huang, DF

Xie, DX ^{[1
]}

机构：

[1] Natl Univ Singapore, Inst Mol Agrobiol, Singapore 117604, Singapore

[2] Chinese Acad Agr Sci, Biotechnol Res Inst, Beijing 100081, Peoples R China

来源：

FEBS LETTERS | 2001年 / 494卷 / 03期

基金：

中国国家自然科学基金;

关键词：

jasmonate; signal transduction; cexl;

D O I：

10.1016/S0014-5793(01)02331-6

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Jasmonates (JA) act as a regulator in plant growth as well as a signal in plant defense. The Arabidopsis vegetative storage protein (AtVSP) and plant defense-related proteins thionin (Thi2.1) and defensin (PDF1.2) have previously been shown to accumulate in response to JA induction. In this report, we isolated and characterized a novel recessive mutant, cex1, conferring constitutive JA-responsive phenotypes including JA-inhibitory growth and constitutive expression of JA-regulated AtYSP, Thi2.1 and PDF1.2. The plant morphology and the gene expression pattern of the cex1 mutant could be phenocopied by treatment of wild-type plants with exogenous JA, indicating that CEX1 might be a negative regulator of the JA response pathway. (C) 2001 Published by Elsevier Science B.V. on behalf of the Federation of European Biochemical Societies.

引用

页码：161 / 164

页数：4