水稻钙依赖型蛋白激酶OsCPK9基因RNAi表达载体的构建及遗传转化

被引:9
作者
韦淑亚 [1 ]
张莹莹 [1 ]
赵旭东 [1 ]
刘小东 [1 ]
罗青晨 [1 ]
卫秋慧 [1 ]
陈鹏 [2 ]
何光源 [1 ]
杨广笑 [1 ]
机构
[1] 科技部国际科技合作基地(基因工程),分子生物物理学教育部重点实验室,华中科技大学生命科学与技术学院
[2] 广西大学农学院
关键词
OsCPK9; 水稻; RNAi; CDPK; 遗传转化;
D O I
暂无
中图分类号
S511 [稻];
学科分类号
摘要
水稻钙依赖型蛋白激酶(CDPKs)是一个响应逆境胁迫并在植物发育过程中起重要作用的蛋白激酶。我们采用RT-PCR从水稻品种日本晴(Oryza sativa L.cv.Nipponbare)中克隆了OsCPK9基因靠近翻译起始位点下游的一段280 bp的特异基因片段。将该片段以正、反向分别连接到来源于小麦TAK14基因的548 bp内含子片段(NCBI accession number:AF325198)两侧,从而获得pSK-OsCPK9-RNAi的中间表达载体。进而将其克隆到植物双元表达载体pCAMBIA1301中,构建shRNAi表达载体pCAMBIA-OsCPK9-RNAi。经酶切和测序鉴定正确后,利用农杆菌介导转化水稻。通过抗性筛选和标记基因hyg和gus进行PCR鉴定,筛选到20株转基因水稻植株,实时荧光定量PCR分析显示,部分转基因植株OsCPK9的表达受到显著抑制。
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页码:581 / 588
页数:8
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