河北农业大学生命科学学院,河北农业大学生命科学学院,河北农业大学生命科学学院,河北农业大学生命科学学院,河北农业大学生命科学学院,河北农业大学生命科学学院,河北农业大学生命科学学院,河北农业大学生命科学学院,河北农业大学生命科学学院,河北农业大学生命科学学院,河北农业大学生命科学学院,河北农业大学生命科学学院
国家自然科学基金资助项目(31171528)
Agricultural University of Hebei,Agricultural University of Hebei,Agricultural University of Hebei,Agricultural University of Hebei,Agricultural University of Hebei,Agricultural University of Hebei,Agricultural University of Hebei,Agricultural University of Hebei,Agricultural University of Hebei,Agricultural University of Hebei,Hebei Agricultural University,Hebei Agricultural University
This work was supported by a grant from The National Natural Science Foundation of China (31171528)
植物病程相关(PR)基因一般在病原物侵染过程中受诱导发生转录上调.目前有证据提示植物PR基因在非生物逆境胁迫下也发生转录变化,但其蛋白质的表达变化情况还鲜有报道.为了解水稻PR蛋白质在逆境胁迫下的表达特征,本文采用免疫印迹技术(Western blotting,WB)调查了8个PR蛋白质在冷、热、旱、淹和盐等5种胁迫下的表达谱.结果表明:在冷胁迫下PR8表达上调,在热胁迫下PR1a、PR3、PR5和PR16表达下调;在旱胁迫下PR1a、PR2和PR8表达上调,而PR5 和PR16表达下调,在淹胁迫下PR1、PR2和PR15表达上调,PR1a、PR3、PR5和PR8表达下调;在盐胁迫下PR2和PR3表达上调,而PR1a、PR5、PR8和PR16表达下调.另外,对这些PR 基因的上游启动子区进行分析,发现存在与胁迫响应相关的调控元件,其中脱落酸反应元件(ABRE)、TC-rich repeats和HSE的出现频率较高.这些蛋白质表达数据进一步佐证了PR蛋白在逆境胁迫反应中发挥着重要且不尽相同的作用.
The transcription of plant pathogenesis related (PR) genes were known to be induced by pathogen invasion. Immerging evidences revealed that the transcription of PR genes also up-regulated under abiotic stresses, however, limited data for PR proteins expression was reported. To characterize the expression of rice PR proteins under stresses, we examined the expressions of eight PR proteins under cold, hot, drought, submerge and salt stresses at seedling stage by Western blotting (WB) via antibody-based proteomics strategy. The results showed that the expressions of PR8 was up-regulated under cold stress, the expressions of PR1a, PR3, PR5 and PR16 were down-regulated under hot stress. The expressions of PR1a, PR2 and PR8 were up-regulated while PR5 and PR16 were down-regulated under drought stress, the expressions of PR1, PR2 and PR15 were up-regulated and PR1a, PR3, PR5 and PR8 were down-regulated under submerge stress. The expressions of PR2 and PR3 were up-regulated while PR1a, PR5, PR8 and PR16 were down-regulated under salt stress. In addition, a number of stress responsive cis-elements, such as the ABRE, TC-rich repeats and HSE, were identified in the promoter region of PR genes. These data supported that PR proteins play important and specific roles in the process of stress tolerance.
高庆华,曾祥然,贾霖,牛东东,李雪姣,关明俐,贾盟,兰金苹,窦世娟,李莉云,刘丽娟,刘国振.水稻病程相关蛋白质在逆境胁迫下的表达研究[J].生物化学与生物物理进展,2013,40(11):1140-1147
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