Fig. 1. Arabidopsis lhp1 mutant phenotype. (A) Six-week-old wild-type Arabidopsis plant (right) and the lhp1-1 mutant (left) under SD. (B) Close-up view of an lhp1-1 inflorescence showing small and upwardly curled cauline leaves, and normal inflorescences and flowers. (C) Close-up view of an lhp1-1 rosette with small, narrow leaves downwardly curled along the longitudinal axis of the leaf. (D,E) Scanning electron micrographs of the upper epidermis of a third rosette leaf from 33-day-old lhp1-1 (D) and wild-type (E) plants. Scale bars, 100 µm.