GA2OX1 — Lactuca sativa

Summary

LsGA2OX1 (GA2OX1) on chromosome 9 of garden lettuce encodes a 2-oxoglutarate-dependent dioxygenase with gibberellin 2-oxidase and 3-beta-dioxygenase activities, placing it in the IPNS-like Fe2OG oxygenase family. The gene is associated with gibberellin biosynthesis and catabolism, ethylene biosynthesis, and responses to red and far-red light, hypoxia, and fungal molecules. It has been linked to seed germination, root growth, hypocotyl elongation, plant height, lateral branching, parthenocarpic fruit development, fruit set, shade avoidance suppression, anthocyanin accumulation, and photosynthetic rate. The protein localises to the cytoplasm. Studies of related genes in other species link the family to tuberization, fruit ripening, seed development, and tolerance to chilling, drought, and salt stress, as well as traits such as leaf area, stem length, and nitrogen content.