PNH — Oryza sativa Japonica

Summary

OsPNH (OS03G0682600) on rice chromosome 3 encodes a protein with Piwi/Argonaute-like domains, including PAZ and RNaseH-like folds, and has been annotated with siRNA and miRNA binding, dsRNA binding, and DNA-binding transcription activator activity. The gene is associated with miRNA and long siRNA processing, gene silencing by miRNA-directed mRNA cleavage, and temporal regulation of development. In rice, it is linked to erect growth and antiviral immunity. Associations extend to leaf polarity and morphology, auxin signalling, TAS3 tasiRNA biogenesis, juvenile-to-adult transition, and shoot apical meristem initiation and maintenance. The gene has also been connected to traits including spikelet number, tiller angle, rolled leaf, amylose content, photosynthetic ability, lignin biosynthesis, inflorescence development, stamen morphology, and root phototropism. Studies of related genes in other species link the family to floral development, developmental timing, and drought stress resistance.