期刊
FEBS LETTERS
卷 585, 期 12, 页码 1847-1852出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.febslet.2011.04.039
关键词
Isochorismate synthase; Nicotiana; Salicylic acid; Salicylate hydroxylase
资金
- Swiss National Science Foundation [31003A-125370]
- Swiss National Science Foundation (SNF) [31003A_125370] Funding Source: Swiss National Science Foundation (SNF)
Salicylic acid (SA) is an important signal involved in the activation of plant defence responses against abiotic and biotic stress. SA may derive from the phenylpropanoid pathway or via isochorismate synthase as demonstrated in Nicotiana benthamiana, tomato and Arabidopsis thaliana. The phenylpropanoid pathway as well as isochorismate synthase are localized in the chloroplasts but it remains unknown if the end product SA is in the same organelle. We have studied the localization of SA in A. thaliana using the salicylate hydroxylase (NahG) gene expressed with a chloroplast targeting sequence. Plants expressing NahG in the chloroplasts are unable to accumulate SA induced after pathogen or UV exposure. Our data infer that SA is initially located in the chloroplasts. (C) 2011 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.
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