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玉米ZmNPR1基因的克隆及表达分析

Acta Botanica Boreali-Occidentalia Sinica(2018)

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Abstract
该研究从玉米高抗自交系D863F中克隆了ZmNPR1基因(GenBank登录号为MH619241)的gDNA和cDNA序列,开放阅读框长1 866 bp,编码621个氨基酸,相对分子质量67.61 kD,等电点为5.46.系统进化树比对表明,玉米ZmNPR1蛋白和高粱SbNPR1蛋白的亲缘关系较近,相似性高达97%.实时荧光定量PCR结果表明,ZmNPR1在叶片中能够被水稻黑条矮缩病毒诱导并显著上调表达.同时ZmNPR1在玉米叶片、茎、根、雄穗、雌穗以及花丝中均有表达,在雌穗和叶片中的表达量较高.研究表明,ZmNPR1可能在玉米粗缩病抗病过程中起着重要作用.
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