LA — Medicago truncatula

Summary

MTR_3G065980 (LA, also known as MtLA, MtRGL, DELLA1, RGL1, RGL2, RGL3) encodes a DELLA and GRAS domain-containing protein that binds gibberellin, phytochrome, lipids, DNA, and ATP, and has DNA-binding transcription factor activity. In barrel medic, this gene is associated with regulation of gibberellic acid-mediated signalling, positive regulation of seed maturation, response to karrikin, regulation of defense response to insect, auxin biosynthetic process, plant organ morphogenesis, photosynthesis light reaction, floral organ identity maintenance, seed trichome elongation, and raffinose family oligosaccharide biosynthesis. It is linked to traits including leaf length-to-width ratio, flower number, shoot elongation under submergence, fruit quality, total soluble sugar content, branch angle, phosphorus response, heterosis, stem length, and vegetative-to-reproductive phase transition. Studies of related genes in other species connect the DELLA family to drought resistance, salt tolerance, freezing tolerance, heat stress tolerance, flowering, root hair density, and apical dominance.