PNH — Oryza sativa Japonica

Summary

OsPNH (OS04G0566500) on rice chromosome 4 encodes a member of the Argonaute protein family, characterized by Piwi, PAZ, and RNaseH-like domains, and is associated with siRNA and miRNA binding. The gene is linked to diverse biological processes including miRNA metabolism, gene silencing, and auxin signaling. In rice, OsPNH has been associated with development, seed traits, plant height, tiller number, vascular bundle formation, and antiviral immunity. Phenotypic associations extend to leaf polarity and morphology, shoot apical meristem initiation, and reproductive growth. The gene is also linked to agronomic traits such as spikelet number, amylose content, photosynthetic ability, and responses to UV light and osmotic stress. Studies of related genes in other species connect the family to drought stress response, floral development, and shoot meristem organization.