Maternal control of Pol IV-dependent siRNAs in Arabidopsis endosperm

被引：17

作者：

Mosher, Rebecca A. ^{[1
]}

机构：

[1] Univ Cambridge, Dept Plant Sci, Cambridge CB2 3EA, England

来源：

NEW PHYTOLOGIST | 2010年 / 186卷 / 02期

基金：

美国国家科学基金会;

关键词：

heterochromatin; imprinting; RNA Polymerase IV; RNA silencing; RNA-directed DNA methylation; small interfering RNAs (siRNAs); RNA-POLYMERASE-IV; DIRECTED DNA-METHYLATION; GENE-EXPRESSION; HETEROCHROMATIN; GENOME; RITS; DEMETHYLATION; TRANSCRIPTION; ARGONAUTE4; ELEMENTS;

D O I：

10.1111/j.1469-8137.2009.03144.x

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Small RNAs recently emerged as ubiquitous regulators of gene expression. However, the most abundant class of small RNAs in flowering plants is poorly understood. Known as Pol IV-dependent (p4-)siRNAs, these small RNAs are associated with transcriptional gene silencing, transposable elements and heterochromatin formation. Recent research demonstrates that they are initially expressed in the maternal gametophyte and uniparentally expressed from maternal chromosomes in developing endosperm. This unique expression pattern links p4-siRNAs to double fertilization, parental genome interactions and imprinted gene expression.

引用

页码：358 / 364

页数：7

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