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OALib Journal期刊
ISSN: 2333-9721
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胁迫相关基因CIPK14在PHYA介导抑制拟南芥远红光黄化苗转绿过程中的作用
, PP. 970-977
Keywords: 叶绿素,CIPK14,远红光,转绿抑制,POR,光敏色素A
Abstract:
本文对CBL互作蛋白激酶,CIPK14参与拟南芥光敏色素A介导的,远红光黄化苗转绿抑制调控进行了研究.结果发现,拟南芥光敏色素A功能缺失突变体(phyA)远红光黄化苗(4天)转入白光处理后,仅0.5h叶片迅速转绿;相同条件下,CIPK14基因插入失活突变体(cipk14)远红光黄化苗,经过15h白光处理之后叶片才开始转绿;野生型(Col-4)远红光黄化苗转绿时间介于突变体phyA与cipk14之间.基因表达分析表明,上述不同基因型拟南芥远红光黄化苗转绿的快慢,与原叶绿素酸酯还原酶基因表达量存在正相关性.结合研究发现——CIPK14基因受到远红光调节,并且表达具有时钟节律性认为,Ca2+调节蛋白CIPK14，可能在PhyA信号传导途径的上游分支介入PhyA介导的远红光黄化苗转绿抑制调控.
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