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中国生物防治学报 ›› 2017, Vol. 33 ›› Issue (2/3): 234-240.DOI: 10.16409/j.cnki.2095-039x.2017.02.014

• 研究论文 • 上一篇    下一篇

解淀粉芽胞杆菌B1619诱导番茄防御酶活性提高和抗病相关基因的表达上调

王璐瑶1,2, 蒋盼盼1,2, 甘颖1, 陈志谊1,2, 刘永峰1   

  1. 1. 江苏省农业科学院植物保护研究所, 南京 210014;
    2. 南京农业大学植物保护学院, 南京 210014
  • 收稿日期:2016-09-08 出版日期:2017-06-08 发布日期:2017-04-08
  • 通讯作者: 陈志谊,研究员,E-mail:chzy84390393@163.com。
  • 作者简介:王璐瑶(1993-),女,硕士研究生,E-mail:578835259@qq.com
  • 基金资助:
    CX(14)2128;CX(12)1004-6

Increase of Defense Enzyme Activity and Up-expression of Defense Gene in Tomato Induced by Bacillus amyloliquefaciens B1619

WANG Luyao1,2, JIANG Panpan1,2, GAN Ying1, CHEN Zhiyi1,2, LIU Yongfeng1   

  1. 1. Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China;
    2. College of Plant Protection, Nanjing Agricultural University, Nanjing 210014, China
  • Received:2016-09-08 Online:2017-06-08 Published:2017-04-08

摘要: 解淀粉芽胞杆菌B1619对设施番茄枯萎病具有良好的防效。为了探明其是否具备诱导番茄植株抗病性的能力,本文研究了菌株B1619灌根处理后番茄叶片过氧化物酶(POD)、超氧化物岐化酶(SOD)和苯丙氨酸解氨酶(PAL)活性以及丙二醛(MDA)含量的变化,同时检测了番茄叶片抗病防卫基因PR-1a、POD酶合成相关基因POD1和SOD酶合成相关基因SOD的转录表达情况。试验结果表明,菌株B1619处理后番茄叶片的POD、SOD、PAL酶活性比未处理的显著提高;MDA含量比未处理的显著降低;菌株B1619灌根处理后叶片中PR-1aPOD1SOD基因的表达水平显著上调。由此可见,诱导番茄产生抗病性是菌株B1619防治设施番茄枯萎病的作用机理之一。

关键词: 解淀粉芽胞杆菌, 诱导抗病性, 抗病相关酶, 抗病相关基因

Abstract: Bacillus amyloliquefaciens B1619 could suppress Fusarium wilt of tomato. To explore the potential mechanism underlying the induced resistance mediated by B1619, the expression profile of several plant defense-related enzymes, peroxidase (POD), superoxide dismutase (SOD), phenylalanine ammonia-lyase (PAL) and secondary metabolite malondialdehyde (MDA), several enzymes synthesis-related genes, SOD,POD1 and defense-related genePR-1a, were monitored in different groups treated with B1619 or Fusarium oxysporum. Levels of SOD, POD, PAL activities and SOD,POD1,PR-1a were all significantly higher than those of the control, while the level of MDA was significantly lower. The expression level of PR-1a, POD1 and SOD were significantly enhanced after root drench with B1619 fermentation broth. The above results suggested that the induced resistance in tomato by B1619 might be one of the mechanisms to control tomato Fusarium wilt caused by F. oxysporum.

Key words: Bacillus amyloliquefaciens, induced resistance, plant defense-related enzymes, plant defense-related genes

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