Fig. 3

Percentage of ECM fungal colonization (%ECM) (a). Each bar represents the mean ± S.E. For each nursery, different letters indicate significant differences according to Tukey’s multiple range test at P < 0.05. N = 36. Asterisks mean differences between nurseries for a given inoculation treatment by Student’s t test at P < 0.05. Dendrogram from UPGMA cluster analysis based on the Jaccard coefficient of ITS DGGE patterns of the DNA of fungal communities from mycorrhizal root tips of Quercus suber seedlings non-inoculated (Control) and inoculated with dual inoculum (SgB) and Mix commercial inoculum (Mix), growing in two different nurseries, Amarante and Buçaco (b). The scale bar indicates the percentage of similarity. Numbers at nodes represent the cophenetic correlation coefficient values, which estimate the consistency of each sub-cluster. Gray bars at each node correspond to the standard deviation of values in that region of the similarity matrix