PR1 — Oryza sativa Japonica

Summary

OsPR1 (OS07G0126301) on rice chromosome 7 encodes a member of the CAP (cysteine-rich secretory protein, antigen 5, and pathogenesis-related 1) superfamily, containing a CAP domain and a CRISP-related region. The gene is associated with diverse biological processes including regulation of hormone levels, cellular response to toxic substances, salicylic acid anabolism, secretion, appressorium formation, hyphal growth, pigmentation, and killing of cells of other organisms. Its product localizes to the extracellular region and vacuole. OsPR1 has been linked to several agronomically important traits, including grain size, grain yield, plant height, chlorophyll a and b content, anthocyanin content, and overall chlorophyll content. Studies of related genes in other species, such as PR-1A, PR-1B, and PR-1C, connect the family to defense responses.