T9aO — Lactuca sativa

Summary

LsGA3OX1 (T9aO) on chromosome 7 of garden lettuce encodes a 2-oxoglutarate-dependent dioxygenase with gibberellin 20-oxidase and 4-coumaroyl 2'-hydroxylase activities. The gene is associated with gibberellin biosynthesis and metabolism, coumarin and phenylpropanoid anabolism, seed germination, root hair elongation, and responses to UV-B, jasmonic acid, and light stimulus. Its product localises to the endoplasmic reticulum and cytoplasm. Studies of related genes in other species link the family to plant height, stem elongation, fruit firmness, and floral organ number.