Abstract
A paradox of RNA-directed transcriptional silencing is that low-level transcription through the silenced locus is observed and may help maintain the silenced state. Discovery of a plant-specific RNA polymerase that directs heterochromatic silencing helps to resolve this issue.
MeSH terms
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Arabidopsis / enzymology*
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Arabidopsis / genetics
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Chromatin / metabolism
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DNA, Plant / genetics*
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DNA, Plant / metabolism
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DNA-Directed RNA Polymerases / chemistry
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DNA-Directed RNA Polymerases / genetics
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DNA-Directed RNA Polymerases / metabolism*
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Gene Silencing*
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Genes, Plant
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RNA, Plant / genetics*
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RNA, Plant / metabolism
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RNA, Small Interfering / metabolism
Substances
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Chromatin
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DNA, Plant
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RNA, Plant
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RNA, Small Interfering
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RNA polymerase IV, Arabidopsis
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DNA-Directed RNA Polymerases