水稻胚乳发育早期印迹基因的几个特点

来源 :2016第四届“模式生物与人类健康”发育遗传学峰会 | 被引量 : 0次 | 上传用户:airkey1
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与水稻胚乳发育密切相关的基因是OsFIE1、OsFIE2、OsEMF2a、OsEMF2b、OsCLF、OsiEZ1等六个PcG基因,这六个PcG基因的表达产物构成PRC2多梳蛋白复合体,通过介导组蛋白的组蛋白H3的第27位赖氨酸上三甲基化(H3K27me3)的形成,对染色质的相关靶基因进行一系列表观遗传修饰,影响细胞增殖和分化,决定细胞命运,进而调控水稻生殖器官的形态建成和胚乳的一系列发育行为.
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