小黑杨环锌指蛋白基因的克隆与表达分析

Plant Physiology Communications(2009)

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Abstract
用cDNA-AFLP技术从小黑杨中克隆与盐胁迫反应相关的cDNA片段,进一步应用RACE技术克隆出具有完整开放读码框的小黑杨环锌指蛋白基因(PsnRZF),该基因全长1 061 bp,其中5'非翻译区为184 bp,3'非翻译区为82 bp,开放读码框为795 bp,编码264个氨基酸,预测蛋白的分子量为30.25 kDa,理论等电点为8.04.实时定量PCR检测的结果显示,正常生长条件下该基因在根、茎、叶中都表达;NaCl胁迫下,该基因在根、茎、叶中的表达量升高.在叶中的表达量随着处理时间的延长而逐渐升高,胁迫处理后第6天表达量达到最高.
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Key words
Populus simoniixP. Nigra,RACE,Real-time PCR,Ring zinc finger
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