中国农业科学 ›› 2013, Vol. 46 ›› Issue (11): 2191-2200.doi: 10.3864/j.issn.0578-1752.2013.11.002

• 作物遗传育种·种质资源·分子遗传学 • 上一篇    下一篇

逆境诱导基因GsSNARE1的耐逆功能分析

 孙明哲, 孙晓丽, 于清悦, 纪巍, 才华, 朱延明   

  1. 东北农业大学/农业生物功能基因重点实验室,哈尔滨 150030
  • 收稿日期:2013-01-22 出版日期:2013-06-01 发布日期:2013-04-22
  • 通讯作者: 通信作者朱延明,E-mail:ymzhu2001@neau.edu.cn
  • 作者简介:孙明哲,E-mail:kaik127@163.com
  • 基金资助:

    黑龙江省高校科技创新团队建设项目(2011TD005)、国家自然科学基金项目(31171578)、国家基础科学人才培养基金项目(J1210069)、黑龙江省研究生创新科研项目(YJSCX2012-047HLJ)、东北农业大学大学生创新创业训练计划(104)

Functional Analysis of a Stress-Induced SNARE Gene GsSNARE1 in Response to Salt and Drought Stresses

 SUN  Ming-Zhe, SUN  Xiao-Li, YU  Qing-Yue, JI  Wei, CAI  Hua, ZHU  Yan-Ming   

  1. Northeast Agricultural University/Key Laboratory of Agricultural Biological Functional Genes, Harbin 150030
  • Received:2013-01-22 Online:2013-06-01 Published:2013-04-22

摘要: 【目的】分离GsSNARE1,并分析其耐逆功能,为深入研究GsSNARE1功能及分子机制奠定基础。【方法】以耐盐野生大豆G50109为材料,利用酵母双杂交验证GsSNARE1与GsCBRLK的互作关系,通过real-time PCR分析干旱和盐处理后GsSNARE1的表达特性,对GsSNARE1进行原核表达,分析GsSNARE1抗盐旱功能。【结果】获得与GsCBRLK互作的GsSNARE1,同源克隆其全长CDS,并在酵母体内验证了二者的相互作用;Real-time PCR分析表明GsSNARE1受盐、干旱胁迫诱导,经PLACE分析,发现其启动子中含有多个逆境胁迫相关的顺式作用元件;GsSNARE1在植物不同组织中均表达;GsSNARE1的表达降低了重组菌对盐、干旱胁迫的耐性。【结论】验证了GsSNARE1与GsCBRLK的互作关系,GsSNARE1在不同组织中均表达,且受盐、干旱胁迫诱导,GsSNARE1的表达降低了重组菌耐盐、耐旱能力。

关键词: 野生大豆 , SNARE蛋白 , 功能分析 , 盐胁迫 , 干旱胁迫

Abstract: 【Objective】The aim of this study is to isolate GsSNARE1, characterize its function under environmental stress, and provide an important basis for studying the precise function and molecular mechanism of GsSNARE1.【Method】Glycine soja 50109 was used as gene cloning material, and the interaction between GsSNARE1 and GsCBRLK was verified by yeast two hybrid analysis. Real-time PCR analysis was used to analyze the expression profile of GsSNARE1 under stress conditions and in different plant tissues. The GsSNARE1 protein was expressed in E. coli, and its function was analyzed under salt and drought stresses.【Result】In this study, the GsCBRLK interacting protein GsSNARE1 was isolated, the full length GsSNARE1 gene was cloned, and the interaction between GsSNARE1 and GsCBRLK in yeast NMY51 was verified. Real-time PCR analysis showed that expression of GsSNARE1 was greatly induced by salt and drought stresses, and PLACE analysis revealed a serial of stress-related cis-elements in GsSNARE1 promoter. GsSNARE1 expressed in different tissues of G. soja. GsSNARE1 expression decreased salt and drought resistance of the recombinant E.coli.【Conclusion】GsSNARE1 interacted with GsCBRLK in yeast. GsSNARE1 transcripts were greatly accumulated under salt and drought stresses, and were detected in different tissues. Expression of GsSNARE1 in E.coli resulted in decreased salt and drought tolerance.

Key words: Glycine soja , SNARE protein , functional characterization , salt stress , drought stress