Proportion of S. maltophilia genotypes and association with biofilm formation. A. Genetic network representing proportion of genotypes found in CF (blue), non-CF (yellow), and ENV (black) strain population. rmlA-/spgM+/rpfF+ genotype was statistically more represented in CF than non-CF group (71.4 vs 28.6%, respectively; p<0.0001, AMOVA); rmlA+/spgM+/rpfF- genotype was statistically more represented in non-CF than CF group (84.2 vs 10.5%, respectively; p < 0.0001, AMOVA). B. Genetic network representing association between genotypes and biofilm formation (red: strong biofilm producers; orange: moderate biofilm producers; yellow: weak biofilm producers; white: no biofilm producers). rmlA-/spgM+/rpfF+ and rmlA+/spgM+/rpfF- genotypes were statistically associated to strong biofilm producers (Pearson r: 0.82 and 0.88, respectively; p < 0.01).