Table 1.
Estimated relative abundance of bacterial genera (%), as determined by bTEFAP, of showerhead biofilms. The relative percentage of sequences assigned to a given taxonomic classification (genera) for each individual showerhead sample are arranged from highest to lowest across three showerheads.
| Genus | Average | Showerhead Biofilm HM (%) | Showerhead Biofilm AH (%) | Showerhead Biofilm UH (%) |
|---|---|---|---|---|
| Xanthomonas | 18.67 | 37.48 | 3.92 | 14.60 |
| Methylobacterium | 12.58 | 3.98 | 33.77* | - |
| Lysobacter | 7.21 | 12.01* | 1.69 | 7.94 |
| Brevundimonas | 6.90 | 1.98* | 18.73* | -* |
| Flavobacterium | 6.87 | 1.30 | - | 19.31 |
| Pseudoxanthomonas | 6.86 | 13.55 | 2.59* | 4.44 |
| Methylophaga | 5.43 | 11.24 | 3.25 | 1.80 |
| Enhydrobacter | 4.35 | - | 13.06 | - |
| Curvibacter | 3.30 | - | - | 9.89 |
| Stella | 2.22 | - | - | 6.67 |
| Bacillus | 2.08 | -* | - | 6.24 |
| Staphylococcus | 1.83 | - | -* | 5.50 |
| Serratia | 1.50 | - | - | 4.50 |
| Sphingomonas | 1.38 | 1.02 | 3.13 | -* |
| Xylella | 1.12 | 2.72 | - | 0.63 |
| Enterobacter | 0.92 | - | - | 2.75 |
| Pseudomonas | 0.90 | 2.32 | 0.40 | - |
| Fulvimarina | 0.79 | - | 2.36 | - |
| Microbacterium | 0.75 | -* | 2.24* | - |
| Sphingobium | 0.68 | - | 2.03 | - |
| Chryseobacterium | 0.66 | -* | 1.98 | - |
| Geobacter | 0.65 | - | - | 1.96 |
| Bdellovibrio | 0.63 | - | - | 1.90 |
| Moraxella | 0.51 | - | 1.54 | - |
| Brevibacterium | 0.49 | - | 1.46 | - |
| Photobacterium | 0.46 | - | - | 1.38 |
| Caulobacter | 0.42 | - | 1.26 | - |
| Aeromonas | 0.41 | - | - | 1.22 |
| Methylophilus | 0.35 | - | - | 1.06 |
| Rhodoferax | 0.35 | - | - | 1.06 |
| Micrococcus | 0.34 | - | 1.02* | -* |
| Propionibacterium | 0.32 | - | - | 0.95 |
| Rhizobium | 0.31 | - | 0.92 | - |
| Pedobacter | 0.23 | 0.68 | - | - |
| Phenylobacterium | 0.23 | 0.68 | - | - |
| Roseomonas | 0.23 | - | 0.68 | - |
| Dokdonella | 0.21 | 0.62 | - | - |
| Blastochloris | 0.20 | - | 0.61 | - |
| Xenophilus | 0.20 | 0.59 | - | - |
| Acidobacterium | 0.19 | - | - | 0.58 |
| Afipia | 0.16 | 0.49 | - | - |
| Stenotrophomonas | 0.15 | 0.46* | - | - |
| Paracoccus | 0.13 | 0.40 | -* | - |
| Paracraurococcus | 0.13 | 0.40 | - | - |
| Methyloversatilis | 0.12 | 0.37 | - | - |
| Novosphingobium | 0.12 | 0.37 | - | - |
| Other genera | 5.44 | 7.35 | 3.37 | 5.61 |
A star (*) indicates that a member of this genus was cultured from that showerhead biofilm (Table 2). The 20 most abundant genera in each showerhead biofilm are shown and those that are at low levels are grouped as together as “other genera”.