A. The schematic diagram of AtSOFL2 and the constructs used for overexpression experiment, including AtSOFLN, AtSOFLD, AtSOFLCD and AtSOFLC. Empty and solid rectangles represent protein-coding regions and the SOFL domains of AtSOFL2, respectively. B. The wild-type (B1), 35S:AtSOFL2 plants (B2) and transgenic plants overexpressing AtSOFLN (B3), AtSOFLD (B4), AtSOFLCD (B5) and AtSOFLC (B6) were grown for one month and a half in the green house. Scale bar = 1.5 cm. C. The wildtype (C1), 35S:AtSOFL2 plants (C2) and transgenic plants overexpressing AtSOFL2 gene with point mutations T21I (C3), D80N (C4) and D52N (C5) were grown for one month in the greenhouse. Scale bar = 1.5 cm.