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The evolution and diversification of Dicers in plants

被引：243
作者：
Margis, Rogerio
Fusaro, Adriana F.
Smith, Nell A.
Curtin, Shaun J.
Watson, John M.
Finnegan, E. Jean
Waterhouse, Peter M.
机构：
[1] CSIRO, Plant Ind, Canberra, ACT 2601, Australia
[2] Univ Fed Rio Grande do Sul, Univ Fed Rio Grande Sul, Porto Alegre, RS, Brazil
来源：
FEBS LETTERS | 2006年 / 580卷 / 10期
关键词：
Dicer; RNAi; evolution;
D O I：
10.1016/j.febslet.2006.03.072
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
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.
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页码：2442 / 2450
页数：9
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