Cultivated ■ Uncultivated ▣ Proteobacteria Geothermal Actinobacteria Soil Marine Freshwater Wastewater Pollutant assoc Low G+C gram Acid metal leac Subsurtace positives Symbionts and Disease associa Totals Cytophagales 25 to 75%()or <25%(no symbol)of studics have Acidobacterium Verrucomicrobia Green non-sulfur bacteria OP11 100 50 0 50 100 Percentage representation in ARB database