PRR1 — Capsicum annuum

Summary

CaPRR1 (T459_17092) on pepper chromosome 6 encodes a protein with NmrA-like and PCBER-like domains that exhibits lariciresinol reductase, pinoresinol reductase, and oxidoreductase activities (EC 1.23.1.1, 1.23.1.2), along with DNA-binding transcription factor activity and transcription cis-regulatory region binding. The gene is associated with lignan biosynthesis and breakdown, including (+)-pinoresinol and (-)-secoisolariciresinol metabolism, as well as positive regulation of photomorphogenesis, heterochronic development, and filament development. It localizes to the nucleus, cytoplasm, plasmodesmata, and stress granules. CaPRR1 is linked to numerous traits including fruit color, carotenoid and anthocyanin content, flowering time, leaf and seed development, hypocotyl length, and responses to arsenic and salt. Related genes in other species are associated with pinoresinol reduction, lariciresinol biosynthesis, and circadian rhythm.