Figure 5.

ICE1 and SCRM2 Are Required for the Successive Cell-State Transitional Steps Leading to Stomatal Differentiation.

(A) Abaxial rosette leaf epidermis of scrm2-1.

(B) Abaxial rosette leaf epidermis of ice1-2. Bracket indicates a GMC-like tumor.

(C) Close-ups of GMC-like tumors in ice1-2 (brackets), showing occasional differentiation of single unpaired guard cells (+). Such an unpaired guard cell expresses the mature guard cell GFP marker, E994 (left panel).

(D) Abaxial rosette leaf epidermis of ice1-2 scrm2-1/+. Asterisks indicate arrested meristemoids.

(E) Abaxial rosette leaf epidermis of ice1-2 scrm2-1.

All images except for (C) were taken under the same magnification. Bar = 20 μm.