RGL2 (AT3G03450) — Arabidopsis thaliana

Summary

AT3G03450 (RGL2, RGA-like 2) in Arabidopsis thaliana encodes a protein with DELLA and GRAS domains, and is annotated with E-box binding, gibberellin binding, phytochrome binding, and other molecular functions. RGL2 is associated with regulation of gibberellic acid-mediated signalling, axis elongation, plant organ formation, trichome morphogenesis, response to karrikin, and singlet oxygen-mediated programmed cell death. It localises to the nucleus, plastid, plasmodesma, and SCF complex, and participates in PIF-regulated transcription and brassinosteroid signalling pathways. The gene is linked to numerous agronomic traits including leaf length-to-width ratio, tiller angle, shoot elongation under submergence, seed volume, flower number, stamen number, fruit set, linoleic and linolenic acid content, copper sensitivity, and far-red light sensitivity. Studies of related genes in other species connect the family to plant height, fruit ripening, grain yield, and drought tolerance.