Polycomb protein ZmEMF1a restricts endosperm proliferation and directs differentiation via stage-specific H2Aub1 and H3K27me3 landscapes in maize.
Polycomb group (PcG) proteins serve as pivotal epigenetic repressors that govern the transcriptional programs underlying cell growth and differentiation. However, their functional roles in maize endosperm remain largely unexplored. Here, we characterize the recessive maize small-kernel mutant sks1, which exhibits persi...