GA2 — Zea mays

Summary

ZM00001EB071090, designated GA2 (also known as KSL10, ATKS, KS1, KS3, KS2, KS5, KS4, KS7, KS6, KS8, ZmKSL4, and ZmKSL1) on maize chromosome 2, encodes a terpene synthase with multiple catalytic activities, including ent-kaurene synthase, syn-pimara-7,15-diene synthase, ent-cassa-12,15-diene synthase, and (3R)-(E)-nerolidol synthase activities. The gene is associated with ent-kaurene, diterpenoid, sesquiterpenoid, and terpenoid metabolism, as well as phytoene and melatonin anabolism. It has been linked to agronomically important traits including grain yield, grain number, plant height, stem strength, drought tolerance, water use efficiency, chlorophyll content, anthesis time, seed dormancy, biomass yield, and sucrose content. The protein localizes to the chloroplast stroma and plastid. Related genes in other species link the family to dwarfism and gibberellin-responsive growth.