DTA1 — Lactuca sativa

Summary

LsDTA1 (GA2OX4, GA2OX2, GA2OX6) on lettuce chromosome 1 encodes a 2-oxoglutarate-dependent dioxygenase with a DIOX_N domain, and is also annotated for gibberellin 3-beta-dioxygenase, 4-coumaroyl 2'-hydroxylase, and gibberellin 2-oxidase activities. The gene is associated with gibberellin catabolism and biosynthesis, coumarin and phenylpropanoid anabolism, and responses to red/far-red light, fungal stimuli, and light stimulus. It is linked to cytoplasmic localization. Associations include ethylene sensitivity, photosynthetic rate, hypocotyl elongation, seed dormancy, axillary bud formation, lateral branching, and parthenocarpic fruit development. Studies of related genes in other species connect the family to somatic embryo production, gibberellin metabolism, and seed germination, while broader sequence similarity links the family to traits such as plant height, leaf and fruit dimensions, root weight, flowering time, branching, and chlorophyll content.