PNH — Brachypodium distachyon

Summary

BdPNH (BRADI_1G28260V3) encodes a protein containing Piwi, Argonaute_Mid, PAZ and RNaseH-like domains, characteristic of the Argonaute family. It is associated with histone ubiquitin ligase and deubiquitinase activities, siRNA and miRNA binding, and DNA-binding transcription activator activity. The gene has been linked to miRNA and tasiRNA processing, gene silencing, acropetal auxin transport, somatic stem cell maintenance, and regulation of cell fate specification. Associations include leaf polarity and morphology, virus resistance, auxin signaling, shoot apical meristem initiation, and the juvenile-to-adult transition. Traits linked to BdPNH encompass leaf shattering, inflorescence development, lignin biosynthesis, photosynthetic ability, root phototropism, and responses to UV light, osmotic stress, and cadmium. Studies of related genes in other species link the family to shoot, leaf, and meristem development, and to drought stress response.