›› 2012, Vol. 14 ›› Issue (4): 106-114.DOI: 10.3969/j.issn.1008-0864.2012.04.16.

• 资源环境 生物药物 生物质转化 • 上一篇    下一篇

干旱胁迫对花生PnAG1基因的表达及生理指标的影响

周西1,2,周浩1,3,单世华1,李林2,杨晨1,4,刘宇1,3,闫彩霞1,张廷婷1   

  1. 1.山东省花生研究所, 山东 青岛 266100; 
    2.湖南农业大学, 长沙 410128|
    3.中国海洋大学, 山东 青岛 266100; 
    4.东北农业大学, 哈尔滨 150030
  • 收稿日期:2011-10-28 出版日期:2012-08-15 发布日期:2012-04-18
  • 通讯作者: 单世华,研究员,博士,博士生导师,主要从事花生遗传育种与种质创新研究。E-mail: shhshan@sina.com。李林,教授,博士,博士生导师,主要从事花生分子生态研究。E-mail: lilindw@163.com
  • 作者简介:周西,硕士研究生,主要从事分子生态学研究。E-mail: zhouxi0323@163.com。
  • 基金资助:

    国家自然科学基金项目(30771361),国家科技支撑计划项目(2009BADA8B03),现代农业产业技术体系建设专项资金项目(CARS-14)资助。

Effects of Drought Stress on Peanut PnAG1 Gene Expression and Physiological Parameters

ZHOU Xi1,2, ZHOU Hao1,3, SHAN Shi-hua1, LI Lin2, YANG Chen1,4, LIU Yu1,3, YAN Cai-xia1, ZHANG Ting-ting1   

  1. 1.Shandong Peanut Research Institute, Shandong Qingdao 266100; 
    2.Hu-nan Agricultural University, Changsha 410128|
    3.Ocean University of China, Shandong Qingdao 266100; 
    4.Northeast Agricultural University, Harbin 150030, China
  • Received:2011-10-28 Online:2012-08-15 Published:2012-04-18

摘要:

为了探讨NBS-LRR结构域中抗性相关基因PnAG1与干旱胁迫的相关性,比较花生在不同干旱程度胁迫下主要防御酶活性变化情况以及PnAG1基因表达量变化动态。经干旱胁迫后测定不同时期两花生品种叶片的过氧化物酶(POD)、过氧化氢酶(CAT)、超氧化物歧化酶(SOD)、谷胱甘肽还原酶(GR)活性、丙二醛(MDA)含量和PnAG1基因表达量的动态变化。结果表明,在干旱胁迫后两品种的POD、GR、MDA变化均表现出先下降后上升的趋势,SOD活性则为表现为持续上升,而PnAG1基因的表达量变化同样也呈现出先下降后上升的趋势,与防御酶活性变化相似,因此推断PnAG1基因在抗病基础之上可能同植物防御体系存在相关。

关键词: 花生;荧光定量PCR;酶活测定;NBS-LRR;干旱胁迫

Abstract:

In this study, we studied on the pertinence between PnAG1 gene which relevant to NBS-LRR with drought stress, we compared the changes in peanut main defense enzyme activity and the dynamics of PnAG1 gene expression under different degrees of drought stress. After drought stress, leaf peroxidase (POD) activity, Catalase (CAT) activity, superoxide dismutase (SOD) activity, glutathione oxidoreductase (GR) activity, malondialdehyde (MDA) content and PnAG1 Gene expression change dynamic of 2 peanut varieties during different periods were measured. The results showed that after drought stress the changes in POD、GR、MDA of 2 varieties showed a tendency of first rising then declined. The SOD activity was rising continuously, while the changes in  PnAG1 gene expression also showed a trend of first decline then rise, similar to the changes in defensive enzyme activity. Therefore, conclusion was drew that the PnAG1 genes might be interrelated with the plant defense system on the basis of the disease resistance.

Key words: peanut, Real-time PCR, enzyme activity determination, NBS-LRR, drought stress

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