Fig. 8

Ex vivo bioassay using susceptible banana plants. Banana plants inoculated with the wild-type and mutant strains were observed for Fusarium wilt symptoms 6 weeks post inoculation wherein the plants inoculated with wild-type and C7 mutant showed severe wilting. The plants inoculated with deletion mutant K09 and truncated mutant T10 showed no external symptoms (a). Longitudinal sections of the corm tissue displayed internal symptoms such as discoloration and necrosis. Severe infection was seen in plants inoculated with wild-type and C7 complementation mutant whereas plants inoculated with deletion and truncated mutants showed clean corm tissue (b)