HA1 — Brassica oleracea var. botrytis

Summary

BoHA1 (HA1) on cauliflower chromosome 3 encodes a P-type ATPase IIIA family member with proton-transporting ATPase activity, also annotated for guanylyl cyclase, peptide receptor, voltage-sensitive potassium channel, SUMO transferase, and protein kinase activities. The gene is associated with proton export across the plasma membrane, cell pH regulation, very-long-chain fatty acid metabolism, defense responses to bacteria and viruses, immune response, sumoylation, and negative regulation of hypersensitive response and programmed cell death. It localizes to the plasma membrane, ER, Golgi, plasmodesmata, and plant-type vacuole. BoHA1 is associated with traits including drought tolerance, water stress response, photosynthetic rate, stomatal closure, leaf senescence, root morphology, shoot growth angle, and responses to high and low temperature, oxidative stress, and bacterial disease. Studies of related genes in other species connect the family to salt tolerance, aluminum resistance, stomatal ABA responsiveness, pathogen defense, and senescence.