Figure 1.

Correlations between the relative abundance of bacterial taxa on tongue dorsum and taste thresholds for the four basic tastes (left side) and nutritional variables (right side). The heatmap represents the Spearman’s correlation R-values. Asterisks relate to the Kendall rank correlation p values: * p < 0.05; ** p < 0.01. Prevotella genera and Clostridia class, which showed significant correlation with energy and macronutrients intake, are highlighted in green and in grey colors, respectively.