SLs attenuate shoot gravitropic response in rice. (A) Shoot curvature of the wild-type plants [Shiokari and Nipponbare (NP)] and d mutants at the seedling stage after 48 h of gravistimulation. (B) The phenotypes of the la1 d14 and la1 d27 double mutants at the adult stage. (Scale bar: 10 cm.) (C) Shoot curvature of the la1 d14 and la1 d27 double mutants at the seedling stage after 24 h of gravistimulation. In A and C, *P < 0.05, **P < 0.01, Student t test. (D–F) The shoot gravitropic responses of d3 (D), d14 (E), and d27 (F) seedlings upon GR24 treatment. The seedlings were grown under light with or without GR24 treatment for 72 h and then were transferred to darkness and reoriented by 90° upon gravistimulation. Means with different letters are significantly different (P < 0.05; ANOVA). Error bars indicate SEM; n = 10.