玉米CIPK3蛋白激酶的克隆及表达分析

Journal of Henan Agricultural University(2012)

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Abstract
利用同源克隆的方法从玉米中获得1个可能编码CIPK的基因ZmCIPK3.ZmCIPK3包括CIPK家族的特征性结构域:N端的蛋白激酶结构域和C端的调节结构域NAF.序列分析表明ZmCIPK3的开放阅读框有1 323个碱基组成,编码440个氨基酸的多肽.表达分析表明ZmCIPK3受各种信号诱导,比如干旱、低温、NaCl和ABA.研究表明Ca2+促进ZmCIPK3的表达,而且Ca2+通道阻断剂(LaCl3)及Ca2+螯合剂(EDTA)能够部分降低这种促进效应.这些结论表明,ZmCIPK3可能属于逆境(或者ABA)胁迫基因,第2信使Ca2+调控其在逆境胁迫下的表达.
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Key words
Zea mays,stress,RT-PCR,gene expression,CIPK
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