FIB — Zea mays

Summary

ZM00001EB336530 (ZmFIB, also known as ZmTAR1, ZmSAV3, and ZmTAA1) on maize chromosome 8 encodes a tryptophan aminotransferase with pyridoxal phosphate binding and transaminase activity, belonging to the alliinase and pyridoxal phosphate-dependent transferase families. The gene is associated with IAA biosynthesis, auxin metabolism, and indole alkaloid anabolism, as well as bract development, sex differentiation, pistil development, shade avoidance, and positive gravitropism. It localizes to the cytoplasm, nucleus, vacuole, and ER membrane. Associations with agronomic traits include grain lysine content, grain weight, grain yield, ear length, tassel branch number, floret number, inflorescence size, leaf angle, plant height, root number, root length, anthesis time, heterosis, and crop stand. Studies of related genes in other species link the family to root elongation, seed development, and leaf vascular development.