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中国生物防治学报 ›› 2021, Vol. 37 ›› Issue (5): 1073-1081.DOI: 10.16409/j.cnki.2095-039x.2021.06.00

• 研究论文 • 上一篇    下一篇

沼泽红假单胞菌蛋白Rhp-PSP对烟草花叶病毒的系统抗性诱导及互作蛋白筛选

周寒梅1, 陈丽洁1, 翟忠英1, 张德咏1,2, 苏品1,2, 刘勇1,2   

  1. 1. 湖南大学研究生院隆平分院, 长沙 410125;
    2. 湖南省农业科学院植物保护研究所, 长沙 410125
  • 收稿日期:2020-11-25 出版日期:2021-10-08 发布日期:2021-10-28
  • 通讯作者: 刘勇,博士,研究员,E-mail:haoasliu@163.com。
  • 作者简介:周寒梅,研究生,zhm9400@hnu.edu.cn
  • 基金资助:
    国家重点研发计划(2017YFD0200400);新疆农业科学院科技创新重点培育专项(xjkcpy-2020005);湖南省重点研发计划(2019NK2192)

Systemic Resistance to Tobacco Mosaic Virus (TMV) Induced by Protein Rhp-PSP of Rhodopseudomonas palustris and Screening of Interaction Protein

ZHOU Hanmei1, CHEN Lijie1, ZHAI Zhongying1, ZHANG Deyong1,2, SU Pin1,2, LIU Yong1,2   

  1. 1. Longping Branch, Graduate School of Hunan University, Changsha 410125, China;
    2. Hunan Plant Protection Institute, Hunan Academy of Agricultural Science, Changsha 410125, China
  • Received:2020-11-25 Online:2021-10-08 Published:2021-10-28

摘要: 本文研究了蛋白Rhp-PSP诱导烟草抗TMV过程中相关防御酶的活性以及丙二醛(MDA)含量的变化,同时测定了抗病相关基因的表达情况。试验证明,蛋白Rhp-PSP处理烟草后,叶片中苯丙氨酸解氨酶(PAL)、过氧化物酶(POD)和多酚氧化酶(PPO)的活性显著提高,但降低了MDA含量。同时基因PR-1、PR-3、PR-5、PDF1.2表达显著上调,证明了蛋白Rhp-PSP具有诱导烟草产生抗TMV的活性。为阐明诱导抗性机制,利用酵母双杂交系统从烟草cDNA文库进行互作蛋白的筛选并验证,结果表明GPI锚定蛋白、VAN3结合蛋白及叶绿素结合蛋白A与蛋白Rhp-PSP互作。

关键词: 关键字:沼泽红假单胞菌, 防御酶, 抗病相关基因, 蛋白互作

Abstract: The activity of defense enzymes, content of malondialdehyde (MDA) and expression level of resistance gene were determined in TMV inoculated tobacco plants induced by protein Rhp-PSP systemic resistance to TMV. The results showed that protein Rhp-PSP treatment increased the activities of phenylalanine ammonia-lyase (PAL), peroxidase (POD) and polyphenol oxidase (PPO) in TMV inoculated tobacco leaves, but decreased the content of MDA, and up-regulated the gene expression of PR-1, PR-3, PR-5 and PDF1.2 significantly. The above results indicated that protein Rhp-PSP of Rhodopseudomonas palustris could induce systemic resistance to TMV in tobacco. In order to understand the mechanism of induce systemic resistance, the interaction proteins with protein Rhp-PSP were screened in the tobacco cDNA library using yeast two-hybrid system. The result showed that the GPI anchoring protein, VAN3 binding protein, chlorophyll binding protein A may have interaction with Rhp-PSP.

Key words: Rhodopseudomonas palustris, defense-related enzyme, plant defense-related genes, protein interaction

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