苯并噻二唑( BTH)诱导黄瓜幼苗对霜霉病抗性的研究

园艺学报 ›› 2006, Vol. 33 ›› Issue (2): 278-282.

苯并噻二唑( BTH)诱导黄瓜幼苗对霜霉病抗性的研究

李玉红¹;程智慧^1*;陈　鹏²;陈晓光¹

(¹西北农林科技大学园艺学院, 杨凌712100; ² 西北农林科技大学生命科学学院, 杨凌712100)

收稿日期:2005-04-13 修回日期:2005-07-11 出版日期:2006-04-25 发布日期:2006-04-25

Studies on Induction Resistance to Psedoperonospora cubensis by BTH inCucumber Seedlings

Li Yuhong¹;Cheng Zhihui^1*;Chen Peng²;Chen Xiaoguang¹

( ¹College of Horticulture, Northwest A & F University, Yangling 712100, China; ²College of Life Sciences, Northwest A & F University, Yangling 712100, China)

Received:2005-04-13 Revised:2005-07-11 Online:2006-04-25 Published:2006-04-25

摘要/Abstract

摘要： 用0.5 mmol/L BTH (苯并噻二唑) 溶液在接种黄瓜霜霉病菌前4、8、12、24、48、96、168 h (7 d) 和接种后2、4 d处理二叶期的黄瓜幼苗, 结果表明BTH对霜霉病菌无直接的抑制作用, 但能诱导黄瓜幼苗对霜霉病产生局部和系统的抗性, 系统抗性的表达在处理后48 h产生并持续7 d以上。几丁质酶和β-1,3-葡聚糖酶活性测定结果表明, BTH处理可系统性地增强这两种酶的活性, 且与黄瓜对霜霉病的诱导抗性密切相关。

关键词: 黄瓜, 霜霉病, BTH, 诱导抗性, 几丁质酶, β-1, 3-葡聚糖酶

Abstract: 0.5 mmol/L BTH was used in seedlingwith two true leaves 4, 8 and 12 h, or 1, 2, 4 and 7 days before or 4 and 2 days after inoculation with P.cubensis. Results obtained showed that BTH had not a curative effect but could induce local and systemic resistance in cucumber against the downymildew. Expression of systemic resistance in leaves was detectable 48 h after treatment and continued for at least 7 days. Chitinase and β-1,3-glucanase activities analysis showed that induced resistance in cucumber leaves was
accompanied by a systemic increasing in both enzymes activities. Two enzymes were related to resistance to downy mildew in cucumber.

Key words: Cucumber downy mildew, BTH, Induced resistance, Chitinase, β-1, 3-glucanase

李玉红;程智慧;陈　鹏;陈晓光. 苯并噻二唑( BTH)诱导黄瓜幼苗对霜霉病抗性的研究[J]. 园艺学报, 2006, 33(2): 278-282.

Li Yuhong;Cheng Zhihui;Chen Peng;Chen Xiaoguang. Studies on Induction Resistance to Psedoperonospora cubensis by BTH inCucumber Seedlings[J]. ACTA HORTICULTURAE SINICA, 2006, 33(2): 278-282.

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