作物学报 ›› 2016, Vol. 42 ›› Issue (02): 295-302.doi: 10.3724/SP.J.1006.2016.00295
余爱丽1,2,赵晋锋1,2,王高鸿2,杜艳伟2,李颜方2,张正2,郭二虎2,梁爱华1,*
U Ai-Li1,2,ZHAO Jin-Feng1,2,WANG Gao-Hong2,DU Yan-Wei2,LI Yan-Fang2,ZHANG Zheng2,GUO Er-Hu2,LIANG Ai-Hua1,*
摘要:
CIPK是一类丝氨酸/苏氨酸蛋白激酶,该蛋白在植物响应逆境胁迫过程中发挥重要作用。本文利用生物信息学方法从谷子基因组中鉴定出2个CIPK基因, 命名为SiCIPK6和SiCIPK16。序列分析表明SiCIPK6基因组序列长1994 bp,编码451个氨基酸;SiCIPK16基因组序列长1885 bp,编码473个氨基酸,2个基因均无内含子和可变剪切。生物信息学分析显示这2个基因在蛋白质序列和结构上与其他物种CIPK基因一样非常保守。实时定量PCR分析表明SiCIPK6和SiCIPK16在ABA、低温、高温、干旱、高盐诱导下表达量均有所上调, SiCIPK6基因在ABA、干旱和盐处理时表达量上调幅度较大,而SiCIPK16基因在低温、干旱和高温处理时表达量上调幅度较大。半定量PCR检测结果表明SiCIPK6和SiCIPK16两个基因在拔节、孕穗、灌浆期时均有表达,在相应生育时期受到干旱胁迫时它们表达量均有所提高。推测SiCIPK6和SiCIPK16基因在谷子的干旱或其他逆境胁迫中起一定作用。
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