RNA-mediated chromatin-based silencing in plants

被引：412

作者：

Matzke, Marjori ^{[1
]}

Kanno, Tatsuo ^{[1
]}

Claxinger, Lucia ^{[1
]}

Huettel, Bruno ^{[2
]}

Matzke, Antonius J. M. ^{[1
]}

机构：

[1] Austrian Acad Sci, Gregor Mendel Inst Mol Plant Biol, A-1030 Vienna, Austria

[2] Max Planck Inst Plant Breeding, D-50829 Cologne, Germany

来源：

CURRENT OPINION IN CELL BIOLOGY | 2009年 / 21卷 / 03期

关键词：

DIRECTED DNA-METHYLATION; CHROMOSOMES HINGE DOMAIN; POLYMERASE-IV; POL-IV; ARABIDOPSIS GENE; PROTEIN; PARAMUTATION; MAINTENANCE; TRANSPOSON; EPIGENOME;

D O I：

10.1016/j.ceb.2009.01.025

中图分类号：

Q2 [细胞生物学];

学科分类号：

071009 ; 090102 ;

摘要：

Plants have evolved an elaborate transcriptional machinery dedicated to eliciting sequence-specific, chromatin-based gene silencing. Two Pol II-related, plant-specific RNA polymerases, named Pol IV and Pol V, collaborate with proteins of the RNA interference machinery to generate long and short noncoding RNAs involved in epigenetic regulation. As revealed by a variety of genetic, molecular, and genomic technologies, these RNAs are used extensively in plants to direct the establishment, spread, and removal of DNA cytosine methylation throughout their genomes. RNA-mediated chromatin-level silencing is increasingly implicated in development, stress responses, and natural epigenetic variation that may promote phenotypic diversity, physiological plasticity, and evolutionary change.

引用

页码：367 / 376

页数：10

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