Figure 5.

Microbial diversity of ancient walls based on deeply sequenced amplicons covering: (a) the bacterial V3V4 16S rDNA gene fragment and (b) the fungal ITS2 (internal transcribed spacer 2) region. The bar chart shows by default the relative abundance of families with an abundance greater than 2% in at least one variant. Sequences that were not assigned at the family level were named in accordance with the lowest available taxonomy: o - order, c - class.