RR1 — Cucumis melo

Summary

MELO3C021290.2, also known as CmRR1, encodes a protein with LUX/BOA-like, Myb, and CheY-like receiver domains, and has been annotated with cytokinin receptor, histidine phosphotransfer kinase, and transcription coactivator activities. In melon, this gene is associated with the regulation of chlorophyll catabolic and biosynthetic processes, anthocyanin and phenylpropanoid metabolism, iron ion transport, seed size, shoot and meristem development, and cell division. It is linked to traits including fruit size, floral organ size, seed yield, plant male sterility, pollen fertility, shoot growth angle, stem elongation, lateral root length, trichome morphology, and responses to ethylene, gibberellic acid, UV light, and low temperature. Phenotypic associations include dwarfism, altered leaf shape, impaired vasculature, reduced cytokinin sensitivity, and decreased root apical meristem activity. Studies of related genes in other species connect the family to salt and cold stress tolerance, drought tolerance, leaf size, and male fertility.