Working model for TLD1 function in response to drought stress. Water deficiency triggers TLD1/OsGH3.13 expression through an ABA-dependent system, causing the alteration of IAA homeostasis, leading to the accumulation of drought-inducible functional genes, such as LEAs, and drought tolerance. Concomitantly, alterations in plant architecture or tissue patterning may also contribute to drought tolerance. aa, Amino acid.