FIG. 4.
Effects of P. putida WCS358r (W) and its phenazine-producing derivatives GMM 2 (#2), and GMM 8 (#8) on the composition of the fungal rhizosphere community during the field trials of 1997 and 1998 as determined by ARDRA. C, control. Dendrograms represent percent similarity of fungal communities of roots of wheat plants grown from bacterized seeds (107 CFU/seed) during the growing seasons of 1997 and 1998. Samples were taken 5 to 139 days (as indicated to the right of each dendrogram) after sowing of bacterized seeds. Similarities are based on ARDRA patterns generated from TaqI-digested, amplified 18S rDNA obtained from wheat rhizosphere DNA extracts. Two independent replicates per treatment were used, each representing a pooled sample of three field plots.