PAP3 — Cucumis sativus

Summary

CsPAP3 (CSA_7G333400) on cucumber chromosome 7 encodes a BHLH domain-containing protein with transcription regulator activator activity, phytochrome binding, and DNA-binding transcription activator activity specific to RNA polymerase II. It is associated with positive and negative regulation of the phytochrome signaling pathway, positive regulation of gibberellin biosynthetic process and thermomorphogenesis, internode patterning, and response to water-immersion restraint stress. The gene product localizes to the plastid-encoded plastid RNA polymerase complex, chloroplast nucleoid, nuclear ubiquitin ligase complex, and chromatin. CsPAP3 is associated with grain yield, fruit quality, fruit set, seed protein content, total soluble sugar content, chlorophyll ratio, leaf area, vegetative vigor, photoperiod sensitivity, and responses to UV-A, far-red, and blue light.