RNA Quality Control as a Key to Suppressing RNA Silencing of Endogenous Genes in Plants.
RNA Quality Control as a Key to Suppressing RNA Silencing of Endogenous Genes in Plants.
复制标题
RNA 质量控制是抑制植物内源基因 RNA 沉默的关键。
DOI:
10.1016/j.molp.2016.03.011
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发表时间:
2016-06-06
期刊:
影响因子:
27.5
通讯作者:
Chen X
中科院分区:
文献类型:
--
作者:
Liu L;Chen X
RNA quality control of endogenous RNAs is an integral part of eukaryotic gene expression and often relies on exonucleolytic degradation to eliminate dysfunctional transcripts. In parallel, exogenous and selected endogenous RNAs are degraded through RNA silencing, which is a genome defense mechanism used by many eukaryotes. In plants, RNA silencing is triggered by the production of double-stranded RNAs (dsRNAs) by RNA-DEPENDENT RNA POLYMERASEs (RDRs) and proceeds through small interfering (si) RNA-directed, ARGONAUTE (AGO)-mediated cleavage of homologous transcripts. Many studies revealed that plants avert inappropriate PTGS of endogenous coding genes by using RNA surveillance mechanisms as a safeguard to protect their transcriptome. The tug-of-war between RNA surveillance and RNA silencing ensures the appropriate partitioning of endogenous RNA substrates among these degradation pathways. Here we review recent advances on RNA quality control and its role in the suppression of RNA silencing at endogenous genes and discuss the mechanisms underlying the crosstalk among these pathways.
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DOI:
10.1038/nrg3355
发表时间:
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期刊:
Nature reviews. Genetics
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