Figure 7.

Effect of ethylene insensitivity on bacterial growth and ethylene emission in tomato plants infected with Cmm. Six-week-old plants of the ethylene-insensitive mutant Nr and wild-type Ailsa Craig plants were infected with a Cmm suspension (10⁶ cfu/mL). A, Bacterial populations were estimated in stems of the infected plants from samples harvested during a 10-d period. B, Ethylene emission from stems of infected plants measured at the indicated numbers of days after infection with Cmm. Gas chromatography was performed as described in “Materials and Methods”. A and B, Data represent the mean ± se (n = 3) and are representative of two independent experiments.