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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