Molecular determinants that convert hormone sensitive lipase into gibberellin receptor

Gibberellins (gas) are tetracyclic,diterpenoid plant hormones,essential for many developmental processes in higher plants. plants perceive ga through a nuclear-localized ga receptor,ga insensitive dwarf1 (gid1). from sequence similarity,it is suggested that gid1 evolved from a hormone-sensitive lipase (hsl),and recent x-ray crystallography of the ga-gid1 complex has given insights into how gid1 recognizes ga. analyses of the ga signaling pathway in several plant species further suggest that the gid1-mediated ga signaling pathway emerged in the vascular plant lineage and since then regulation of ga recognition specificity seems to have been fine tuned to strictly regulate the on-off ga signal. © 2012 bentham science publishers.