B-1 — Zea mays

Summary

ZmB-1 (ZM00001EB190570) on maize chromosome 4 encodes a protein with CDPK_Ser/Thr_kinases, EF-hand calcium-binding domains, and a protein kinase domain. The gene is associated with nitrate transmembrane transporter activity and is linked to nitrate content, nitrogen sensitivity, and root-to-shoot nitrate transport. It is associated with tassel branch number, root weight, shoot dry weight, photosynthetic ability, and carotenoid content. Associations also include water stress response, UV-B light sensitivity, red light sensitivity, and biotic plant stress, as well as seed longevity, salt tolerance, and cadmium resistance. The gene product localizes to the tonoplast, endosome, Golgi, and nuclear envelope. Studies of related genes in other species link the family to nitrate uptake, lateral root development, and drought tolerance.