Rapid increase of NO release in plant cell cultures induced by cytokinin

被引:128
作者
Tun, NN [1 ]
Holk, A [1 ]
Scherer, GFE [1 ]
机构
[1] Leibniz Univ Hannover, Inst Zierpflanzenbau Baumschule & Pflanzenzuchtun, Abt Spez Ertragsphysiol, D-30419 Hannover, Germany
关键词
nitric oxide; cytokinin; signal transduction; Nicotiana tabacum;
D O I
10.1016/S0014-5793(01)03164-7
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
4,5-Diaminofluoresecin. a fluorescence indicator for NO. was applied to detect the release of NO from plant cells. NO production was increased within 3 min when plant cell cultures (Arabidopsis. parsley, and tobacco) were treated by cytokinin and was dose-dependent and signal-specific in that other plant hormones and inactive cytokinin analog were not effective in stimulating of NO release. The response was quenched by addition of 2-(aminoethyl)-2-thiopseudourea, an inhibitor of the animal NO synthase, and by addition of an NO scavenger. 2-(4-carboxvphenyl)-4,4,5,5-tetramethylimidazoline1-1-oxy-3-oxide. These results imply that NO may act in cytokinin signal transduction. (C) 2001 Federation of European Biochemical Societies. Published by Elsevier Science B.V.. All rights reserved.
引用
收藏
页码:174 / 176
页数:3
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