Figure Lazertinib price 2 UniFrac PCoA of dust sample nucITS library clone frequencies. The first and second principal coordinates (P1 and P2) are shown. The first axis correlates with building (P1, red circles, 23% of variation). Apart from reference sample Re1a, the second axis correlates with building conditions (P2, blue circles, 16% of variation). The circles were drawn manually. The UniFrac program was subsequently used to conduct a tree-based analysis to determine which fungal clusters occurred
in individual samples at a significantly higher frequency than expected (compared to random OTU distribution). The results of this analysis are presented in Figure 3; the detailed OTU composition of the clusters shown in the figure is given in Additional file 2 Table S1. Ten phylogenetic clusters (clusters # 1, 5, 12,17-19, 29, 46, 49 and 53) occurred in one or both index buildings at a higher than expected frequency. The Index-2 building was heavily dominated by P. chrysogenum- and P. commune-related OTUs selleck chemical (cluster 12). In contrast, several clusters (# 1, 5, 17-19) of diverse ascomycete OTUs were characteristic of the Index-1 building. These clusters were affiliated with the classes Dothideomycetes and Eurotiomycetes, and GS-9973 chemical structure included known colonizers of indoor materials (e.g. Aureobasidium pullulans, Cladophialophora minutissima,
Exophiala xenobiotica, Epicoccum nigrum, Leptosphaerulina chartarum) as well as a variety
of related, unknown OTUs. Similarly, the basidiomycete clusters characteristic of index buildings (# 29, 46, 49) included potentially building-associated species, e.g. Serpula (-)-p-Bromotetramisole Oxalate lacrymans, Gloeophyllum sepiarium and Trametes versicolor, yet these phylotypes occurred at a low frequency. Other lineages were associated with the reference buildings. These contained Cladosporium- and Aureobasidium-related Dothideomycetes (# 18, 20) as well as Sordariomycetes (# 23, mainly Fusarium oxysporum) and various yeasts including Cryptococcus spp., Mrakia spp. and Rhodotorula spp. S. cerevisiae, (# 27, 38, 52 and 25, correspondingly). The within-class phylotype richness ratio was elevated (Sn(In)/Sn(Re) = 1.7-13.8) among classes Agaricomycetes, Dothideomycetes and Tremellomycetes in both index buildings in relation to their references (Figure 4). Figure 3 Phylogenetic representation of indoor dust fungal communities inferred from nucITS clone library data. Percentage frequency representation of clusters in individual dust samples are given as a heat map table, also showing cluster numbers (#), class and main genera included. A statistically significantly increased occurrence of a cluster in a sample is shown underlined (UniFrac analysis).