GRF9 — Brassica oleracea var. botrytis

Summary

BoGRF9 (GRF9) on chromosome 4 of cauliflower encodes a transcription coactivator belonging to the GRF family, characterised by QLQ and WRC domains, and is localised to the nucleus and mitochondria. It is associated with the regulation of DNA-templated transcription, cell division, leaf and root development, seed development, root meristem growth, adaxial/abaxial pattern specification, response to gibberellin, response to deep water, and pH reduction. The gene has been linked to numerous traits including seed weight, water use efficiency, leaf morphology, floral organ development, anthocyanin content, and root oxidative activity, as well as phenotypes such as drought tolerance, heat stress adaptation, phosphate starvation response, starch accumulation, and somatic embryogenesis. Studies of related genes in other species connect the family to leaf size, cotyledon development, root meristem size, and seed mass.