Figure 6.

ET Responses of TPK1b RNAi and Wild-Type Tomato Seedlings.

(A) The triple response in the wild type but its absence in TPK1b RNAi seedlings grown in the dark in the presence of increasing concentrations of ACC.

(B) Hypocotyl (top) and root (bottom) length of wild-type (black) and TPK1b RNAi (white) seedlings grown in the dark at varying concentrations of ACC.

The pictures in (A) and the measurements in (B) were taken at 6 d after plating. Pictures are representative of seedlings of the corresponding treatments. These experiments were repeated at least five times. The asterisk indicates that the data are statistically significant from the corresponding wild-type control (P = 0.05).