GA5 — Triticum aestivum

Summary

TaGA5 (TRAESCS5D02G566200) on wheat chromosome 5D encodes a gibberellin 20-oxidase, a 2-oxoglutarate-dependent dioxygenase with iron/ascorbate oxidoreductase and DIOX_N domains, and also exhibits gibberellin 3-beta-dioxygenase, flavanone 3-dioxygenase, and redox activities. The gene is associated with tillering, plant development, flowering time, stem height, grain number and yield, seed germination, leaf and root growth, biomass, drought tolerance, winter survival, salt stress tolerance, and wind tolerance. It is linked to gibberellin biosynthesis and signaling, cytokinin breakdown, responses to flooding, red/far-red light, and short-day flowering, as well as secondary cell wall biogenesis, lignin and flavonoid anabolism, defense against oomycetes, and polar cell growth. The protein localizes to the cytoplasm. Studies of related genes in other species connect the family to stem growth, gibberellin feedback regulation, seed dormancy, anther development, and grain chalkiness.