PRR1 — Solanum tuberosum

Summary

StPRR1 (PGSC0003DMG400019518) on potato chromosome 3 encodes a pseudo-response regulator with a CCT domain, ARR-like and CONSTANS-like features, and is annotated as a DNA-binding transcription factor with blue light photoreceptor and phytochrome-binding activities. It is associated with the regulation of circadian rhythm, including photoentrainment, temperature compensation, and rhythmic processes, as well as the regulation of photosynthesis, auxin biosynthesis, anthocyanin metabolism, thermomorphogenesis, and hydrogen peroxide metabolism. The gene is linked to traits such as photoperiod sensitivity, vegetative vigor, leaf area, petiole size, gibberellic acid content, abscisic acid concentration, fruit set, seed protein content, and responses to drought stress, submergence, and nematode damage. It localizes to the nucleus and cytosol and is connected to pathways involving TOC1 expression and ubiquitin-mediated degradation. Studies of related genes in other species link it to drought stress tolerance, freezing tolerance, photoperiod-dependent flowering, biomass, and aphid resistance.