PNH — Oryza sativa Japonica

Summary

OS06G0597400 (PNH1) on rice chromosome 6 encodes a member of the Argonaute protein family, characterized by Piwi, PAZ, and RNaseH-like domains, and is annotated with diverse molecular functions including siRNA and miRNA binding, histone ubiquitin ligase activity, and superoxide dismutase activity. The gene is associated with numerous developmental and physiological processes, such as appendage development, miRNA metabolism, auxin transport, and somatic stem cell maintenance. Observed phenotypes link PNH1 to leaf polarity, leaf morphology, antiviral immunity, and erect growth. The gene has been connected to a wide range of agronomic traits, including spikelet number, tiller angle, amylose content, photosynthetic ability, leaf shattering, and cadmium uptake. Studies of related genes in other species further associate the family with drought stress response, floral development, and meristem organization.