The expanding world of small RNAs in plants

被引：670

作者：

Borges, Filipe ^{[1
]}

Martienssen, Robert A.

机构：

[1] Howard Hughes Med Inst, Cold Spring Harbor, NY 11724 USA

来源：

NATURE REVIEWS MOLECULAR CELL BIOLOGY | 2015年 / 16卷 / 12期

基金：

美国国家卫生研究院; 美国国家科学基金会;

关键词：

DIRECTED DNA METHYLATION; SMALL INTERFERING RNAS; DICER-LIKE PROTEINS; TRANSPOSABLE ELEMENTS; GENE-EXPRESSION; REPRODUCTIVE DEVELOPMENT; CYTOSINE METHYLATION; ENDOGENOUS SIRNAS; ANTIVIRAL DEFENSE; PATTERN-FORMATION;

D O I：

10.1038/nrm4085

中图分类号：

Q2 [细胞生物学];

学科分类号：

071009 ; 090102 ;

摘要：

Plant genonnes encode various small RNAs that function in distinct, yet overlapping, genetic and epigenetic silencing pathways. However, the abundance and diversity of small-RNA classes varies among plant species, suggesting coevolution between environmental adaptations and gene-silencing mechanisms. Biogenesis of small RNAs in plants is well understood, but we are just beginning to uncover their intricate regulation and activity. Here, we discuss the biogenesis of plant small RNAs, such as nnicroRNAs, secondary siRNAs and heterochromatic siRNAs, and their diverse cellular and developmental functions, including in reproductive transitions, genomic imprinting and paramutation. We also discuss the diversification of small-RNA-directed silencing pathways through the expansion of RNA-dependent RNA polymerases, DICER proteins and ARGONAUTE proteins.

引用

页码：727 / 741

页数：15

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