PNH — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.6HG0603150 (HvPNH) on barley chromosome 6H encodes a member of the Argonaute protein family, containing Piwi, PAZ, and RNaseH-like domains, and is annotated with diverse molecular functions including siRNA and miRNA binding, histone ubiquitin ligase activity, and DNA-binding transcription activator activity. The gene is associated with a wide range of biological processes, including miRNA and siRNA metabolism, somatic stem cell population maintenance, regulation of cell fate specification, female meiotic nuclear division, and acropetal auxin transport. It has been connected to numerous agronomic traits such as spikelet fertility, inflorescence development, leaf morphology, photosynthetic ability, lignin biosynthesis, gibberellic acid and cytokinin content, and responses to UV light and osmotic stress. Studies of related genes in other species link the family to shoot apical meristem initiation, leaf polarity, meiosis, antiviral immunity, and grain yield.