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RRP6L1 and RRP6L2 Function in Silencing Regulation of Antisense RNA Synthesis


Arabidopsis FLOWERING LOCUS C (FLC) delays flowering; therefore, repressing expression of FLC provides a critical mechanism to regulate flowering. This mechanism involves multiple levels of regulation, including genetic regulation by transcription factors, and epigenetic regulation by modifications of genomic DNA and histones at the FLC locus. This work examines the role of non-coding RNAs in the epigenetic regulation of FLC, finding that the different RNAs produced from the FLC locus may have different functions in altering the epigenetic landscape at the FLC locus, and revealing that AtRRP6L1 and AtRRP6L2, two components of the exosome, an RNA-processing complex, play roles in regulating these non-coding RNAs. Therefore, this work explores the complex ties between RNA processing, non-coding RNAs, and epigenetic regulation of FLC, a key repressor of flowering.


Vyšlo v časopise: RRP6L1 and RRP6L2 Function in Silencing Regulation of Antisense RNA Synthesis. PLoS Genet 10(9): e32767. doi:10.1371/journal.pgen.1004612
Kategorie: Research Article
prolekare.web.journal.doi_sk: https://doi.org/10.1371/journal.pgen.1004612

Souhrn

Arabidopsis FLOWERING LOCUS C (FLC) delays flowering; therefore, repressing expression of FLC provides a critical mechanism to regulate flowering. This mechanism involves multiple levels of regulation, including genetic regulation by transcription factors, and epigenetic regulation by modifications of genomic DNA and histones at the FLC locus. This work examines the role of non-coding RNAs in the epigenetic regulation of FLC, finding that the different RNAs produced from the FLC locus may have different functions in altering the epigenetic landscape at the FLC locus, and revealing that AtRRP6L1 and AtRRP6L2, two components of the exosome, an RNA-processing complex, play roles in regulating these non-coding RNAs. Therefore, this work explores the complex ties between RNA processing, non-coding RNAs, and epigenetic regulation of FLC, a key repressor of flowering.


Zdroje

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