RPH1 — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.1HG0063020, designated Rph1 on barley chromosome 1H, encodes a protein of unknown molecular function. The gene is associated with leaf rust resistance in barley. It is also linked to disease resistance, including resistance to Phytophthora brassicae, and to positive regulation of hydrogen peroxide biosynthesis and defense responses against oomycetes. Rph1 has been connected to photosystem II accumulation and cysteine dependency. The encoded product is predicted to localize to plastids, mitochondria, and membranes. Studies of related genes in other species link the RPH1 family to leaf blast disease response and photochemical quenching, though these associations are not yet established in barley.