Genomics

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A pioneer protein encoded by required to maintain repression2 facilitates locus-specific paramutation in Zea mays


ABSTRACT: This research identifies a novel protein required for paramutation at the maize purple plant1 locus. This 'required to maintain repression2' (RMR2) protein represents the founding member of a plant-specific clade of hypothetical proteins. We show that RMR2 is required for transcriptional repression at the Pl1-Rhoades haplotype, for accumulation of 24 nt RNA species, and for maintenance of a 5-methylcytosine pattern distinct from that maintained by RNA polymerase IV. Genetic tests indicate that RMR2 is not required for paramutation occurring at the red1 locus. These results distinguish the paramutation-type mechanisms operating at specific haplotypes. The RMR2 clade of proteins provides a new entry point for understanding the diversity of epigenomic control operating in higher plants.

ORGANISM(S): Zea mays

PROVIDER: GSE37204 | GEO | 2012/04/16

SECONDARY ACCESSION(S): PRJNA158565

REPOSITORIES: GEO

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