Figure 2

Scanning electron micrographs of stomatal guard cells of WT and tgg1 tgg2 double mutant.

(a–d) WT. (e–h) tgg1 single mutant: the stomatal guard cells appear bigger. (i-l), tgg2 single mutant: the stomatal guard cells appear bigger. (m–p) tgg1 tgg2 double mutant: stomatal guard cells appear smaller, tightly closed and sunken showing variations as compared to the normal and open stomatal guard cells in the WT, and tgg1 and tgg2 single mutants. (a,b,e,h–j,l) (Scale bars, 5 μm). (c,d,f,g,k,m–p) (Scale bars, 2 μm).