Figure 1.

PMCs in lepto1 Are Arrested at Preleptotene.

(A) Morphology of the rice sterile mutant lepto1. The left panel shows plant morphology after heading. The right panel shows opened spikelets of the wild type and lepto1.

(B) Gene structure of LEPTO1 and the mutation site of lepto1. Black boxes represent exons, black lines represent introns, and gray boxes represent the untranslated regions.

(C) Chromosome morphology of meiocytes at preleptotene, early leptotene, leptotene, and late leptotene in the wild type and at preleptotene in lepto1.

(D) Transverse sections of wild-type anthers stained with DAPI at preleptotene and leptotene.

(E) Transverse sections of lepto1 anthers stained with DAPI at preleptotene and arrested preleptotene.

Bars = 5 μm.