Fig. 3.

Suppression of take-all disease symptoms on wheat roots by isogenic derivatives of P. chlororaphis 30-84. 30-84WT, 30-84PCA and altered phenazine produces were seed inoculated and planted into a soil mix infested with Ggt. After 20 days of growth, roots were thoroughly washed and evaluated for disease severity on scale of 0 (no disease) – 5 (nearly dead). The values are the mean of two separate experiments (8 plants per each experiment) with standard error bars. Values with the same letter do not differ significantly as determined by a Fishers protected Least Significantly Difference (LSD) test (P > 0.05).