PNH — Oryza sativa Japonica

Summary

OS03G0449200 (PNH, also known as SHL4, ZIP, OsAGO1, OsAGO7) on rice chromosome 3 encodes a protein containing Piwi, PAZ, and RNaseH-like domains. The gene product is associated with histone ubiquitin ligase activity, siRNA and miRNA binding, and DNA-binding transcription activator activity. It has been linked to diverse biological processes including appendage development, miRNA metabolism, gene silencing by miRNA, acropetal auxin transport, and temporal regulation of development. In rice, the gene is associated with erect growth and antiviral immunity phenotypes. It has also been connected to numerous agronomic traits including spikelet number, tiller angle, leaf shattering, amylose content, and photosynthetic ability. Studies of related genes in other species link the family to developmental timing, floral organ development, and drought stress response.