植物非编码RNA调控春化作用的表观遗传

doi:10.3724/SP.J.1005.2012.00829

遗传 ›› 2012, Vol. 34 ›› Issue (7): 829-834.doi: 10.3724/SP.J.1005.2012.00829

植物非编码RNA调控春化作用的表观遗传

张绍峰, 李晓荣, 孙传宝, 何玉科

中国科学院上海生命科学研究院植物生理生态研究所, 植物分子遗传国家重点实验室, 上海200032

收稿日期:2011-12-13 修回日期:2012-02-02 出版日期:2012-07-20 发布日期:2012-07-25
通讯作者: 何玉科 E-mail:ykhe@sibs.ac.cn
基金资助:
国家自然科学基金重点项目(编号：30730053)和上海市科委基础重点项目(编号, 09JC1416000)资助

Epigenetics of plant vernalization regulated by non-coding RNAs

ZHANG Shao-Feng, LI Xiao-Rong, SUN Chuan-Bao, HE Yu-Ke

State Key Laboratory of Plant Molecular Genetics, Shanghai Institute of Plant Physiology & Ecology, Shanghai Institutes for Biologi-cal Sciences, Chinese Academy of Sciences, Shanghai 200032, China

Received:2011-12-13 Revised:2012-02-02 Online:2012-07-20 Published:2012-07-25

摘要/Abstract

摘要： 在自然界中许多高等植物需要通过冬季的低温阶段实现从营养生长到生殖生长的时期转化, 这一生物学过程称作春化作用。小麦(Triticum aestivum L.)和油菜(Brassica napus L.)等作物以种子为产品器官, 生产上往往通过茬口安排和栽培措施使植株尽早通过春化作用, 以促进花芽形成和花器官发育, 而大白菜 (B rapa ssp. pekinenesis)和甘蓝(B. oleracea)等作物以叶球等营养器官作为产品器官, 生产上则设法避免低温引起的春化作用, 以保证产品器官的充分生长。FLOWERING LOCUS C(FLC)作为一种重要的开花抑制蛋白负调控春化作用, 参与植株从营养生长向生殖生长的转化过程。文章综述了春化中FLC表达受抑制主要通过低温诱导表达FLC基因区域的非编码RNA以及VRN1、VRN2、VIN3等蛋白参与介导组蛋白甲基化, 从而在表观遗传上控制春化作用的进程和产品器官的正常发育。

关键词: 表观遗传, 春化作用, FLC, 非编码RNA, 天然反向转录本

Abstract: Many higher plants must experience a period of winter cold to accomplish the transition from vegetative to reproductive growth. This biological process is called vernalization. Some crops such as wheat (Triticum aestivum L.) and oilseed rape (Brassica napus L.) produce seeds as edible organs, and therefore special measures of rotation and cultivation are necessary for plants to go through an early vernalization for flower differentiation and development, whereas the other crops such as Chinese cabbage (B rapa ssp. pekinenesis) and cabbage (Brassica napus L.) produce leafy heads as edible organs, and additional practice should be taken to avoid vernalization for a prolonged and fully vegetative growth. Before vernalization, flowering is repressed by the action of a gene called Flowering Locus C (FLC). This paper reviewed the function of non-coding RNAs and some proteins including VRN1, VRN2, and VIN3 in epigenetic regulation of FLC during vernalization.

Key words: epigenetics, vernalization, non-coding RNA, natural antisense transcripts, FLC

张绍峰，李晓荣，孙传宝，何玉科. 植物非编码RNA调控春化作用的表观遗传[J]. 遗传, 2012, 34(7): 829-834.

ZHANG Shao-Feng, LI Xiao-Rong, SUN Chuan-Bao, HE Yu-Ke. Epigenetics of plant vernalization regulated by non-coding RNAs[J]. HEREDITAS, 2012, 34(7): 829-834.

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植物非编码RNA调控春化作用的表观遗传

Epigenetics of plant vernalization regulated by non-coding RNAs

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