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枣疯病病树中内源激素的变化研究
引用本文:赵锦,刘孟军,代丽,周俊义.枣疯病病树中内源激素的变化研究[J].中国农业科学,2006,39(11):2255-2255.
作者姓名:赵锦  刘孟军  代丽  周俊义
作者单位:1. 河北农业大学生命科学学院,保定,071000
2. 河北农业大学中国枣研究中心,保定,071000
基金项目:国家自然科学基金;河北省自然科学基金
摘    要:【目的】揭示枣疯植原体对枣树内源激素的影响,弄清枣疯病病树中内源激素的变化趋势。【方法】应用HPLC法分别对健株、病株和盐酸土霉素治疗后转健植株中的细胞分裂素(玉米素,Zeatin)、生长素(吲哚乙酸,IAA)、赤霉素(GA3)和脱落酸(ABA)的含量进亚周年检测。【结果】在根部,健株、治疗株和病株中IAA、GA3和ABA的含量没有明显区别,但在7、8月份病株根部中Zeatin的含量要明显高于健株;在叶部,健株、治疗株和病株中的IAA、GA3和ABA的含量也没有明显区别,但在生长后期病株叶片中Zeatin含量显著高于健株。不同患病程度叶片中激素的比较结果表明,患病程度越重,Zeatin/IAA(C/A)比值越高。【结论】植原体侵染枣树植株后致使其内源激素失衡,主要是细胞分裂素含量的增加,最终导致了枣疯病症状表现。

关 键 词:枣树  枣疯病  内源激素  变化
收稿时间:2005-08-08
修稿时间:2005-08-082006-08-31

The Variations of Endogenous Hormones in Chinese Jujube Infected with Witches' Broom Disease
ZHAO Jin,LIU Meng-jun,DAI Li,ZHOU Jun-yi.The Variations of Endogenous Hormones in Chinese Jujube Infected with Witches'''' Broom Disease[J].Scientia Agricultura Sinica,2006,39(11):2255-2255.
Authors:ZHAO Jin  LIU Meng-jun  DAI Li  ZHOU Jun-yi
Institution:1College of Life Science, Agricultural University of Hebei, Baoding 071000; 2Research Center of Chinese Jujube, Agricultural University of Hebei, Baoding 071000
Abstract:Jujube witches' broom (JWB), caused by phytoplasma, is the most serious and destructive disease of Chinese jujube (Ziziphus jujuba Mill.). In order to reveal the influence of phytoplasma on the endogenous hormone of Chinese jujube, the contents and variations of Zeatin, IAA, GA3 and ABA in healthy tree, diseased tree and the diseased jujube cured with oxytetracycline were measured around the whole year by HPLC. The result showed that in root, there were no difference in the contents of IAA, GA3 and ABA among healthy, diseased and cured jujube, but obvious difference in the content of Zeatin between diseased (high) and healthy jujube in July and August. In leaves, there were also no difference in the contents of IAA, GA3 and ABA among healthy, cured and diseased jujube, but the content of Zeatin of diseased jujube increased continuously and was higher obviously than that of healthy one in later stage. Comparison among jujube with different diseased extent showed that the heavier the diseased extent, the higher the Zeatin/IAA (C/A). All those results indicate that the infection of phytoplasma could cause the unbalance of the endogenous hormone and resulted in the witches’ broom symptom at last.
Keywords:Chinese jujube  Jujube witches' broom  Endogenous hormone  Variations
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