PNH — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.7HG0750280, designated HvPNH, encodes an Argonaute-family protein with RNA endonuclease activity and RNA binding, containing Piwi, PAZ, and RNaseH-like domains. The gene is associated with multiple reproductive and developmental processes, including male and female meiotic nuclear division, microgametogenesis, megagametogenesis, stem cell population maintenance, and leaf development. It is also linked to upregulation of meiotic DNA double-strand break formation, RNA-dependent gene silencing, regulation of gene expression, and responses to water and jasmonic acid. The protein localises to the nucleus, nucleolus, NOR, and cytoplasm. HvPNH has been connected to grain number, spikelet fertility, drought tolerance, water use efficiency, zinc concentration, sugar content, and quantum yield. Studies of related genes in other species link the family to spikelet number.