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

文献类型： 外文期刊

第一作者： Xu, LH

作者： Xu, LH;Liu, FQ;Wang, ZL;Peng, W;Huang, RF;Huang, DF;Xie, DX

作者机构：

关键词： jasmonate;signal transduction;cexl

期刊名称：FEBS LETTERS （ 影响因子：4.124； 五年影响因子：3.814 ）

ISSN： 0014-5793

年卷期： 2001 年 494 卷 3 期

页码：

收录情况： SCI

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.

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