GA5 — Zea mays

Summary

ZM00001EB064970 (ZmGA5, also known as ZmGA20OX1–4) on maize chromosome 1 encodes a 2-oxoglutarate-dependent dioxygenase with gibberellin 20-oxidase and 3-beta-dioxygenase activities. The gene is associated with stem elongation, plant height, leaf and root growth, anthesis-silking interval, grain weight, grain number, biomass yield, harvest index, and heterosis. It is linked to responses to flooding, drought, cold, salt stress, and red/far-red light, as well as to strigolactone metabolism, auxin transport, geotropism, lignin and phenylpropanoid anabolism, and sex determination. The protein localises to both the cytoplasm and nucleus. Studies of related genes in other species connect the family to gibberellin homeostasis, seed dormancy, anther development, and yield traits.