The evolution and diversification of Dicers in plants
The evolution and diversification of Dicers in plants
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DOI：
10.1016/j.febslet.2006.03.072
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发表时间：
2006-05-01
期刊：
影响因子：
3.5
通讯作者：
Waterhouse, Peter M.
中科院分区：
文献类型：
--
作者：
Margis, Rogerio;Fusaro, Adriana F.;Waterhouse, Peter M.
大多数多细胞生物通过微RNA调节发育转变，微RNA由酶Dicer产生。昆虫和真菌有两个Dicer样基因，许多动物只有一个，而植物拟南芥有四个。对白杨和水稻基因组的研究表明，它们分别含有5个和6个Dicer样基因。对这些基因的分析表明，植物需要一组基本的四种Dicer类型，这些类型在单子叶植物和双子叶植物分化之前（类似于2亿年前）就存在了，但在植物从绿色藻类分化之后。第五种切丁酶似乎是在单子叶植物中进化出来的。(c)2006年欧洲生物化学学会联合会。Elsevier B.V.出版，保留所有权利。
Most multicellular organisms regulate developmental transitions by microRNAs, which are generated by an enzyme, Dicer. Insects and fungi have two Dicer-like genes, and many animals have only one, yet the plant, Arabidopsis, has four. Examining the poplar and rice genomes revealed that they contain five and six Dicer-like genes, respectively. Analysis of these genes suggests that plants require a basic set of four Dicer types which were present before the divergence of mono- and dicotyledonous plants (similar to 200 million years ago), but after the divergence of plants from green algae. A fifth type of Dicer seems to have evolved in monocots. (c) 2006 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.