Figure 7.

Relationship between PLA1 and PLA2.

(A) Expression of PLA1 in 1-month-old wild-type shoot apex.

(B) Expression of PLA1 in pla2-1 1-month-old shoot apex.

(C) Expression of PLA2 in 3-week-old shoot apex of the wild type.

(D) Expression of PLA2 in 3-week-old shoot apex of pla1-4.

(E) Seedlings at 2 weeks after germination. pla1-2 pla2-1 initiated more leaves than the pla1-2 or pla2-1 single mutant.

(F) Transverse sections of pla1-2 pla2-1 shoot apex at 1 month after germination. Arrows indicate two successive leaves that are initiated from the same side of the SAM. Arrowhead indicates fusion of the margins of two successive leaves due to shortened plastochron.

(G) Inflorescence of pla1-2 pla2-1. pla1-2 pla2-1 produced a large number of ectopic shoots (cf. with Figure 4G).

Bars = 100 μm in (A) to (D), 5 cm in (E), 200 μm in (F), and 2.5 cm in (G).