Table 2 Diversity estimates for bacteria and archaea from 16Â S rDNA gene clone libraries constructed from biogas reactor fed with E. prolifera
Library | Taxonomy (Order, family, genus) | Abundance (a)x, (b)y, (c)z | Metabolic features | Reference |
|---|---|---|---|---|
Bacteria | Thermotogales; Thermotogaceae; S1 | 38.35, 44.64, 61.82 | Degraded carbohydrates and peptides, produced H2 and acetic acid, sulfur-reducing in broth | |
Thermoanaerobacterales; Thermodesulfobiaceae; Coprothermobacter | 18.35, 20.48, 7.43 | Degraded sugar or protein; produced H2, CO2 and acetic acid | ||
Clostridiales; Clostridiaceae; Clostridium; | 6.24, 10.31, 7.30 | Degraded cellulose, sugar and protein; produced H2, CO2 and organic acid | ||
Clostridiales; Clostridiaceae; Caloramator; | 5.30, 0.98, 0.71 | Degraded glucose, xylose, disaccharide; produced acetate, isobutyrate, isovalerate, valerate, lactate, H2, CO2 and ethanol. | Crespo et al. 2012 | |
Clostridiales; Clostridiaceae; Sporanaerobacter; | 0.44, 0.47, 0.39 | Degraded glucose to acetate, H2, and CO2 | Hernandez-Eugenio et al. 2015 | |
others | 30.25, 21.84, 22.05 | Substrate hydrolysis | Qiu et al. 2014 | |
Archaea | Cenarchaeales; Cenarchaeaceae; Cenarchaeum | 83.22, 95.45, 94.74 | Degraded substrate; played a vital role of nitrogen and sulfur cycle with ammoxidation | Hallam et al. 2006 |
Methanobacteriales; Methanobacteriaceae; Methanothermobacter | 3.36, 2.83, 3.28 | Converted hydrogen and/or format carbon dioxide to methane | Seifert et al. 2014 | |
Unclassified; Unclassified; Methanomassiliicoccus | 0.19, 0.21, 0.15 | Converted hydrogen and carbon dioxide to methane | Dridi et al. 2012 | |
Methanosarcinales; Methanosarcinaceae; Methanosarcina | 0.07, 0.36, 0.06 | Converted acetate, hydrogen and carbon dioxide to methane; methylotrophs | Vrieze et al. 2012 | |
Methanosarcinales; Methanosaetaceae; Methanosaeta | 0.06, < 0.01, < 0.01 | Converted acetate to methane and carbon dioxide | Smith & Ingram-Smith 2007 |