Table 3.
Phylogenetic distribution of autotrophic, phototrophic, and sulfur cycling genes in metagenomes.
| Phylogenetic Group | BLVA Green (BVLA_5) | BLVA Purple (BVLA_20) | White Creek (WC_6) | Chocolate Pots (CP_7) | Mushroom Spring (MS_15) | Fairy Geyser (FG_16) |
|---|---|---|---|---|---|---|
| CARBON FIXATION PATHWAYS | ||||||
| Roseiflexus spp. | 0.60 | 0.80 | 0.20 | 0.90 | 0.60 | 0.80 |
| Chloroflexus spp. | 1.00 | 1.00 | 0.80 | |||
| Other Chloroflexi | 0.20 | 0.50 | ||||
| Cyanobacteria | 0.20 | 0.60 | ||||
| Thermochromatium spp. | 0.67 | |||||
| Alpha-proteobacteria | 0.67 | |||||
| (BACTERIO)CHLOROPHYLL BIOSYNTHESIS | ||||||
| Roseiflexus spp. | 0.76 | 0.57 | 0.14 | 0.86 | 0.57 | 0.76 |
| Chloroflexus spp. | 1.00 | 0.90 | 0.76 | 0.19 | 0.05 | |
| Other Chloroflexi | 0.14 | 0.14 | 0.14 | 0.43 | ||
| Thermochromatium spp. | 0.13 | |||||
| Cyanobacteria | 0.45 | 1.36 | 0.27 | 0.09 | ||
| Ca. Thermochlorobacter spp. | 0.08 | 0.83 | 0.08 | 0.25 | ||
| Ca. Chloracidobacterium spp. | 0.23 | 0.05 | ||||
| Alpha-proteobacteria | 0.25 | |||||
| PHOTOSYSTEM REACTION CENTERS | ||||||
| Roseiflexus spp. | 0.50 | 0.25 | 0.50 | 0.50 | ||
| Chloroflexus spp. | 0.40 | 0.40 | 0.20 | |||
| Cyanobacteria | 0.33 | 0.97 | 0.52 | 1.00 | ||
| SULFUR CYCLING | ||||||
| Thermochromatium spp. | 0.80 | |||||
Entries represent relative completeness of indicated pathways calculated as the fraction of a unique occurrence of a gene in a taxon divided by the total number of genes known to be involved in that function (values > 0.5 are in bold). Metagenome sequences were compared to known pathways in the genome sequences of Chloroflexus aurantiacus J-10-fl, Roseiflexus sp. strain RS-1, Thermochromatium spp., Allochromatium vinosum, Synechococcus sp. strain A, “Candidatus Chloracidobacterium thermophilum”, Chloroherpeton thalassium, and the alpha-proteobacterium, Rhodopseudomonas palustris TIE-1.