摘要
本文概述了棉花抗黄萎病的特点与规律,指出棉花植株是通过自身组织结构的强化、植物抗毒素的合成以及微生物之间的互作三方面应对黄萎病菌的侵染。认为棉花植株主要通过促进木质素生成和增加积累量以强化组织结构。在棉花抗病反应中以植物抗毒素的合成为主要途径,包括萜类、酶类和激素类3类化学物质,其中酶类物质如几丁质酶已经在很多植物中被证明具有抗病作用,但是其具体作用途径仍不清楚。土壤中某些微生物也可以对黄萎病菌产生作用。重点讨论了在棉花抗黄萎病信号通路中重要分子磷酸激酶和磷酸酯酶在植株抗性防卫中起着级联调控开关的作用,在现有信号调控研究基础上其在抗病机制中可能的参与途径。对目前棉花抗黄萎病分子育种研究中存在的主要问题和可能的解决途径进行了探讨,展望了其发展的方向。
The paper reviewed traits and genetic rules of cotton against verticillium wilt in general, depicted the three approaches which exists in cotton defending against verticillium wilt through reinforcing physical structure, producing plant phytoalexin, interacting with microbes in detail It is deemed that in cotton reinforcing physical structure mainly through promoting lignin synthesis and increasing lignin accumulation. Producing plant phytoalexins has been recognized as the primary and dominant routines in defending system in cotton, include terpenoid, proteases and hormones in which many enzymes, such as chitinase, has been proved useful against verticillium in several plants, but not their functional mechanism. Some microbes in soil impose positive or negative influence on verticillium. Protein kinase and phosphatase which play an important role in signal transduction in plant defense system, be used as ＂on-and-off＂ switch in cotton signal transduction path against verticillium wilt and which probably pathway they participate in anti mechanism was discussed. The current problems and possible solving approach in antierticillium cotton breeding was discussed, and the future of anti-verticillium cotton molecular breeding research was previewed.
出处
《分子植物育种》
CAS
CSCD
2006年第4期593-600,共8页
Molecular Plant Breeding
基金
国家自然科学基金专项(30571210)资助.
关键词
棉花
黄萎病
抗病机理
磷酸酯酶
分子育种
Cotton, Verticillium wilt, Resistant mechanism, Phosphatase, Molecular breeding
