首页> 外文期刊>African Journal of Biotechnology >Cloning and expression analysis of glutathione reductase gene from cucumber (Cucumis sativus L.) treated by exogenous nitric oxide under low temperature stress
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Cloning and expression analysis of glutathione reductase gene from cucumber (Cucumis sativus L.) treated by exogenous nitric oxide under low temperature stress

机译:低温胁迫下外源一氧化氮处理黄瓜(Cucumis sativus L.)谷胱甘肽还原酶基因的克隆及表达分析

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Nitric oxide (NO) is a bioactive and multifunctional gaseous molecule signal that plays a crucial role in stress responses and mediates a variety of physiological processes in plant. Previous studies indicate that NO can reduce stress damage via regulating the activities of antioxidant enzymes including glutathione reductase (GR). In order to analyze the potential effect of cucumber?GR?activity on NO application prior to cold treatment, full length of?GR?sequence was obtained by rapid amplification of cDNA ends (RACE), and its expression was characterized by northern blot. The?GR?gene in cucumber is 1995 bp (accession number: GU248528) in length, including one open reading frame encoding 496 amino acids. The?GR?sequence in?cucumber shares a high similarity with those from other plant species at the polypeptide level. Northern blot analysis indicates that the?GR?expression is up-regulated under NO treatments before chilling stress in?cucumber leaves.
机译:一氧化氮(NO)是一种生物活性和多功能气体分子信号,在胁迫响应中起着至关重要的作用,并介导植物中的各种生理过程。先前的研究表明,NO可以通过调节包括谷胱甘肽还原酶(GR)在内的抗氧化酶的活性来减少应激损伤。为了分析黄瓜的GRGR活性对冷处理前NO施用的潜在影响,通过快速扩增cDNA末端(RACE)获得全长的GRGR序列,并通过RNA印迹法对其表达进行了表征。黄瓜中的“ GR”基因长度为1995bp(登录号:GU248528),包括一个开放阅读框,编码496个氨基酸。黄瓜中的“ GR”序列在多肽水平上与其他植物物种的相似性很高。 Northern印迹分析表明,在低温处理黄瓜叶片之前,NO处理下GR的表达上调。

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