Dendrograms based on the percentages of similarity of rhizosphere fungal communities of field-grown wheat plants in 2000 that were not treated (contr) or were treated with P. putida WCS358r (wt), with WCS358r::phz (phz), with WCS358r::phl (phl), or with a combination of the two GMMs (phz + phl). The similarities are based on ARDRA patterns generated from amplified 18S rDNA digested with TaqI. Samples were taken 11, 25, 39, and 59 days after sowing. Samples from three plots were pooled, resulting in two replicates per treatment from the left half (a) and the right half (b) of the field. The levels of similarity are shown above each dendrogram.