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. Exami

ORGANISM(S): Zea mays

SUBMITTER: Blake Meyers 

PROVIDER: E-GEOD-37204 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress