PNH — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.5HG0520550 (HvPNH) on barley chromosome 5H encodes a protein containing Piwi, PAZ, and RNaseH-like domains. The gene is associated with siRNA and miRNA binding, miRNA metabolic processes, and gene silencing by miRNA-directed mRNA cleavage. HvPNH has been linked to somatic stem cell population maintenance, regulation of cell fate specification, female meiotic nuclear division, and temporal regulation of development. Associations with agronomic traits include spikelet fertility, spikelet number, inflorescence development, leaf shattering, photosynthetic ability, gibberellic acid and cytokinin content, zinc concentration, and root phototropism. The gene is also connected to leaf polarity, auxin signaling, virus resistance, and cadmium uptake. Related genes in other species link the family to meiosis, shoot apical meristem initiation, grain yield, and drought stress response.