CKR1 — Brassica oleracea var. botrytis

Summary

BoCKR1 (CKR1) on chromosome 9 of cauliflower encodes a protein with C2H4 (ethylene) receptor activity, histidine kinase activity, dual-specificity protein kinase activity, and metal ion transmembrane transporter activities including iron and manganese channel activity. It is associated with ethylene signaling and response pathways, including jasmonic acid/ethylene-dependent systemic resistance and detection of ethylene stimulus. The gene is linked to numerous agronomically relevant traits such as seed yield, fruit ripening, leaf senescence, photosynthetic rate, stomatal resistance, root development, lateral root length, cell elongation, anthocyanin content, and responses to temperature stress, osmotic stress, herbicide sensitivity, and aphid and insect damage. It localizes to the vacuolar membrane, tonoplast, ER membrane, plasmalemma, and nucleus. Related genes in other species link the family to ethylene signal transduction, iron acquisition, salinity tolerance, and disease resistance.