PNH — Oryza sativa Indica Group

Summary

BGIOSGA006044 (PNH, OiPNH) on chromosome 2 of Indica rice encodes a protein with Piwi and Argonaute domains, including PAZ and RNaseH-like folds, and is annotated with diverse molecular functions such as siRNA binding, miRNA binding, and histone ubiquitin ligase activity. The gene is associated with numerous biological processes including miRNA metabolism, gene silencing by miRNA, and regulation of meiotic DNA double-strand break formation. In rice, PNH is associated with sheath development, reproductive growth, meiosis, cell division, seed and grain traits, plant height, tillering, antiviral immunity, and yield. It is also associated with leaf polarity, leaf morphology, shoot apical meristem initiation, auxin signaling, and the juvenile-to-adult transition. Studies of related genes in other species link the family to drought stress response, floral development, shoot meristem organization, and heat tolerance.