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. 2018 Mar 21;14(3):e1007248. doi: 10.1371/journal.pgen.1007248

Fig 1. FIN219 and CRY1 regulate each other in modulating hypocotyl elongation of Arabidopsis seedlings under different light conditions.

Fig 1

(A) FIN219 function in regulating light-mediated inhibition of hypocotyl elongation requires functional CRY1 and CRY2. Hypocotyl growth responses of 4-day-old seedlings under different light conditions. (Left to right) Wild type (Col-0), FIN219-OE, cry1, FIN219-OE/cry1, cry2, FIN219-OE/cry2, cry1cry2 and FIN219-OE/cry1cry2. Blue light: 2.2 μmol•m-2•s-1, far-red light (FR): 3.1 μmol•m-2•s-1, red light: 7.5 μmol•m-2•s-1, white light: 8 μmol•m-2•s-1. Scale bar = 2 mm. (B) Quantification of hypocotyl lengths of seedlings shown in (A). Data are mean ± SD (n ≥ 20). Different lowercase letters represent significant differences by one-way ANOVA at P <0.05. (C) FIN219 overexpression in GUS-CCT1 transgenic plants can rescue the short-hypocotyl phenotype of GUS-CCT1 under all light conditions except red light. Hypocotyl growth responses of 4-day-old seedlings under various light conditions, including the dark. (Left to right) wild type (Col-0), fin219, FIN219-OE, FIN219-OE/GUS-CCT1 #11–21, #13–4, GUS-CCT1 and cry1. Blue light: 2.2 μmol•m-2•s-1, far-red light (FR): 3.1 μmol•m-2•s-1, red light: 7.5 μmol•m-2•s-1, white light: 8 μmol•m-2•s-1. Scale bar = 2 mm. (D) Quantification of hypocotyl lengths of seedlings shown in C. Data are mean ± SD (n ≥ 20). Different lowercase letters represent significant differences by one-way ANOVA at P <0.05.