PNH — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.6HG0633820, designated HvPNH on barley chromosome 6H, encodes a protein containing Piwi, PAZ and Argonaute domains characteristic of the Argonaute family. The product is annotated with siRNA and miRNA binding, dsRNA binding, and DNA-binding transcription activator activity, and is associated with miRNA metabolic processes, pre-miRNA processing, long siRNA processing, and gene silencing by miRNA-directed mRNA cleavage. HvPNH has been linked to somatic stem cell population maintenance, temporal regulation of development, regulation of cell fate specification, female meiotic nuclear division, and acropetal auxin transport. Associations with agronomic traits include spikelet number, spikelet fertility, inflorescence development, leaf shattering, photosynthetic ability, and gibberellic acid and cytokinin content. Studies of related genes in other species connect the family to shoot apical meristem initiation, leaf polarity, meiosis, antiviral immunity, and grain yield.