PNH — Zea mays

Summary

ZM00001EB161940 (ZmPNH, also known as ZmAGO1A) on maize chromosome 3 encodes a protein with multiple annotated molecular functions including histone ubiquitin ligase, deubiquitinase, dsRNA and siRNA binding, and DNA-binding transcription activator activity. The gene is associated with miRNA and siRNA metabolic processes, gene silencing by miRNA-directed mRNA cleavage, somatic stem cell population maintenance, and temporal regulation of development. In maize, ZmPNH has been linked to drought stress response. Associations also include leaf polarity and morphology, auxin signaling, virus resistance, megagametogenesis, shoot apical meristem initiation, and juvenile-to-adult transition. Additional associations include ear weight, photosynthetic ability, inflorescence branching and development, lignin biosynthesis, root phototropism, gibberellic acid and cytokinin content, and responses to UV light, osmotic stress, and metal stress. Studies of related genes in other species link the family to shoot apical meristem formation, leaf development, meiosis, antiviral immunity, grain yield, and reproductive development.