Fig. 2

Composition of most abundant taxa in planktonic phase and biofilm in saliva with glucose/fructose as carbon source. A Bacteria relative abundance within the planktonic phase and biofilm at genus and species level. B Difference in log2-transformed abundances of bacterial species in biofilm compared to the planktonic phase. Bars indicate ± standard error in the linear mixed-effects model. Taxa shown are those that had FDR < 0.05 in the linear mixed-effects model. C Alpha-diversity differences between biofilm and planktonic phase. D Principle coordinates analysis plot of Bray–Curtis dissimilarity between samples. X and Y axis show the percentage of total variance captured. E Difference in log2-transformed abundances of KEGG pathways in biofilm compared to the planktonic phase. Bars indicate ± standard error in the linear mixed-effects model. Pathways shown are those that had FDR < 0.05 in the linear mixed-effects model