Chinese Journal OF Rice Science ›› 2015, Vol. 29 ›› Issue (6): 658-664.DOI: 10.3969/j.issn.1001G7216.2015.06.013

• Orginal Article • Previous Articles    

Cloning and Expression of the Gene OC-XII Conferring Resistance to Aphelenchoides besseyi in Rice

Feng WANG, Qiao-li CHEN, Dan-lei LI*(), Ya-ming LING, Bo-wen WANG, Rui-zhi ZHANG, Yan-yan JIA, Yong-hang LI, Yu-ying PEI, Xin-ming LU   

  1. Department of Forestry,Northeast Forestry University, Harbin 150040, China
  • Received:2014-11-11 Revised:2015-05-18 Online:2015-10-25 Published:2015-11-10
  • Contact: Dan-lei LI
  • About author:

    *Corresponding author:E-mail:danleili@126.com

水稻抗干尖线虫基因OC-XII的克隆及表达研究

王峰, 陈俏丽, 李丹蕾*(), 零雅茗, 王博文, 张瑞芝, 贾岩岩, 李永航, 裴雨滢, 昕明   

  1. 东北林业大学 林学系, 哈尔滨 150040
  • 通讯作者: 李丹蕾
  • 作者简介:

    *通讯录作者:E-mail:danleili@126.com

  • 基金资助:
    中央高校基本科研业务费专项资金资助项目(2572015EY02,DL13BA01,2572015CA09)黑龙江省博士后基金资助项目(LBH-Z11248)高等学校博士学科点新教师基金资助项目(20100062120002)大学生创新性实验计划资助项目(201410225163)

Abstract:

The previous resistance verification indicated that Dabaigu (Oryza sativa ssp. indica) resists the infection of Aphelenchoides bessey. To reveal the interaction between the resistance and the pathogenesis-related protein Cystatin, the gene OC-XII was cloned, the docking between OC-XII and A. besseyi Cathepsin B was done, and the expression of OC-XII was tested by quantitative real-time PCR. Results showed that OC-XII bound with Cathepsin B specifily. The expression level of OC-XII was upregulated from 12 hours after infection to 2 days after infection, and downregulated 3 days after infection. These results indicated that OC-XII was involved in the resistance to A. besseyi. The gene has the potential for biological control of plant-parasitic nematodes, and it is necessary to conduct in-depth research.

Key words: cystatin, inhibitor, Aphelenchoides besseyi, Cathepsin B

摘要:

抗性验证试验表明籼稻大白谷抗水稻干尖线虫侵染。为进一步探究此抗性与病程相关蛋白——半胱氨酸蛋白酶抑制剂(Cystatin)的相关性,基于水稻基因组数据克隆籼稻大白谷Cystatin家族的OC-XII基因,分别进行OC-XII、Japonica-OC-XII和Indica-OC-XII蛋白质三维结构构建,并与水稻干尖线虫组织蛋白酶B(Cathepsin B)进行分子对接以验证OC-XII基因编码蛋白对Cathepsin B的抑制功能。通过荧光定量qPCR验证OC-XII基因在线虫侵染前后的表达特性,OC-XII蛋白可以与水稻干尖线虫Cathepsin B蛋白质特异结合,线虫侵染后OC-XII基因在浸染12h~2d期间表达量持续上调,侵染3d后下调。表明OC-XII基因在大白谷抗水稻干尖线虫侵染过程中发挥功能,具有对植物寄生线虫进行生物防治的潜力,有必要对其进行深入研究。

关键词: 半胱氨酸蛋白酶, 抑制剂, 水稻干尖线虫, 组织蛋白酶B

CLC Number: