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作物学报 ›› 2016, Vol. 42 ›› Issue (05): 690-695.doi: 10.3724/SP.J.1006.2016.00690
刘凌云,刘浩,赵晶,王艳霞,王棚涛
LIU Ling-Yun,LIU Hao,ZHAO Jing,WANG Yan-Xia,WANG Peng-Tao*
摘要：
叶绿素荧光动力学技术在测定叶片光合作用中光系统对光能的吸收、传递、耗散、分配等方面具有独特的作用。本研究借助叶绿素荧光成像仪, 从拟南芥EMS诱变突变体库中筛选到一株低叶绿素荧光突变体lcf3-1 (lower chlorophyll fluorescence 3-1)。遗传分析表明lcf3-1突变体为单基因隐性突变。突变基因图位克隆结果显示LCF3是PsbW的等位基因。另外, LCF3基因的T-DNA插入突变体及功能回补转基因植物的叶绿素荧光分析结果, 均证明LCF3基因突变导致拟南芥叶绿素荧光Fv/Fm值降低。进一步实验证明LCF3蛋白定位于叶绿体, 且LCF3基因在植株中普遍表达。PsbW蛋白可能细微调整PSII-LHCII超复合体的组装及稳定。
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