RR3 — Brassica oleracea var. botrytis

Summary

BoRR3, located on chromosome 3 of cauliflower (Brassica oleracea var. botrytis), encodes a response regulator protein of the ARR-like family, possessing histidine phosphotransfer kinase activity, phosphorelay response regulator activity, and histidine kinase binding. This gene is associated with the regulation of cytokinin-mediated signalling, the histidyl-aspartyl phosphorelay, response to cytokinin, meristem maintenance, multidimensional cell growth, circadian rhythm, and DNA-templated transcription. It is linked to traits including ethylene sensitivity and stomatal opening and closure, as well as phenotypes such as altered root elongation, cytokinin sensitivity, root hair initiation, shoot formation, callus greening, fertility, and seed size. The encoded protein localises to the plastid, cytosol, cytoplasm, and nucleus. Studies of related genes in other species connect the family to red light sensitivity and seed weight.