PNH — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.3HG0238320, designated HvPNH on barley chromosome 3H, encodes a member of the Argonaute protein family, containing Piwi, PAZ and RNaseH-like domains. The encoded product is associated with siRNA and miRNA binding, histone ubiquitin ligase activity, and a wide range of biological processes including miRNA metabolic processing, somatic stem cell population maintenance, regulation of cell fate specification, acropetal auxin transport, and female meiotic nuclear division. HvPNH has been linked to numerous agronomic traits including spikelet fertility, spikelet number, inflorescence development, leaf morphology, photosynthetic ability, lignin biosynthesis, and responses to UV-A and UV-B light. Studies of related genes in other species connect the family to shoot apical meristem initiation, leaf polarity, antiviral immunity, meiosis, grain yield, and developmental timing.