Figure 3.

Phenotypes of r2 Single and Double Mutants.

(A) An rnr2a-1 rnr2b-1 seedling showing no obvious phenotype.

(B) A tso2-1 seedling. White tissues are forming in the emerging leaves.

(C) A typical tso2-1 rnr2a-1 seedling, which will not develop further.

(D) The SAM of a tso2-1 rnr2a-1 seedling that terminates with callus-like cells.

(E) A wild-type leaf.

(F) A tso2-1 rnr2a-1 leaf showing a severely disrupted leaf surface.

(G) A wild-type Ler plant and a tso2-1 plant.

(H) Six-week old tso2-1/tso2-1 plants singly or doubly heterozygous for rnr2a-1 and/or rnr2b-1: tso2-1/tso2-1 (1); tso2-1/tso2-1; rnr2b-1/+ (2); tso2-1/tso2-1; rnr2a-1/+ (3); and tso2-1/tso2-1; rnr2a-1/+; rnr2b-1/+ (4).

(I) tso2-1 siliques showing small white sectors in the green carpel valve.

(J) tso2-1/tso2-1; rnr2b-1/+ siliques showing larger white sectors and smaller siliques.

Bars in (A) to (F) = 1 mm.