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棉花学报  2012 

拮抗细菌C-02防治棉花黄萎病的机理研究

DOI: 1002-7807(2012)05-0420-07, PP. 420-426

Keywords: 拮抗细菌,棉花,黄萎病,机理,致萎毒素

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Abstract:

从抗生、竞争和诱导系统抗性三个方面对拮抗细菌C-02防治棉花黄萎病的机理展开了研究,结果表明,C-02分泌的抗菌蛋白能溶解病原菌VD-11的细胞壁,抑制其致萎毒素的分泌。与病原菌VD-11相比,C-02利用碳源有明显优势,在棉花根际土壤中具有显著的营养竞争优势和很好的定殖能力。C-02处理棉苗后,棉叶中植株防御性酶系PAL、POD和PPO的活性提高幅度大,维持时间长。C-02防治棉花黄萎病的机理是抗生、溶菌、竞争和诱导棉苗系统抗性的综合表现。

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