| azorhizobium | 54 | genus | bacteria | | 6 |
| cellvibrio | 28 | genus | bacteria | | 10 |
| dictyoglomus | 24 | genus | bacteria | | 13 |
| methylophilus | 36 | genus | bacteria | | 16 |
| pelobacter | 33 | genus | bacteria | | 18 |
| phenylobacterium | 7 | genus | bacteria | | 20 |
| stigmatella | 41 | genus | bacteria | | 40 |
| cystobacter | 17 | genus | bacteria | | 42 |
| melittangium | 6 | genus | bacteria | | 44 |
| archangium | 16 | genus | bacteria | | 47 |
| chondromyces | 75 | genus | bacteria | | 50 |
| nannocystis | 14 | genus | bacteria | | 53 |
| polyangium | 18 | genus | bacteria | | 55 |
| vitreoscilla | 47 | genus | bacteria | | 59 |
| herpetosiphon | 15 | genus | bacteria | | 64 |
| lysobacter | 24 | genus | bacteria | | 68 |
| caulobacter | 86 | genus | bacteria | | 75 |
| hyphomicrobium | 43 | genus | bacteria | | 81 |
| hyphomonas | 21 | genus | bacteria | | 85 |
| leptothrix | 41 | genus | bacteria | | 88 |
| stella | 39 | genus | bacteria | | 93 |
| gallionella | 30 | genus | bacteria | | 96 |
| ancylobacter | 19 | genus | bacteria | | 99 |
| flectobacillus | 19 | genus | bacteria | | 101 |
| runella | 5 | genus | bacteria | | 105 |
| spirosoma | 6 | genus | bacteria | | 107 |
| gemmata | 24 | genus | bacteria | | 113 |
| planctomyces | 32 | genus | bacteria | | 118 |
| pirellula | 24 | genus | bacteria | | 123 |
| isosphaera | 12 | genus | bacteria | | 127 |
| tuberoidobacter | -3 | genus | bacteria | | 131 |
| methylocystis | 32 | genus | bacteria | | 133 |
| leptospirillum | 49 | genus | bacteria | | 179 |
| aquaspirillum | 38 | genus | bacteria | | 187 |
| azospirillum | 80 | genus | bacteria | | 191 |
| thermus | 123 | genus | bacteria | | 270 |
| xanthobacter | 56 | genus | bacteria | | 279 |
| zoogloea | 50 | genus | bacteria | | 349 |
| agrobacterium | 186 | genus | bacteria | | 357 |
| agrobacterium tumefaciens | 155 | species | bacteria | bacteria | 358 |
| bradyrhizobium | 100 | genus | bacteria | | 374 |
| methylobacillus | 16 | genus | bacteria | | 404 |
| methylococcus | 98 | genus | bacteria | | 413 |
| methylomonas | 34 | genus | bacteria | | 416 |
| methylosinus | 87 | genus | bacteria | | 425 |
| methylobacter | 32 | genus | bacteria | | 429 |
| acetobacter | 88 | genus | bacteria | | 434 |
| thermomicrobium | 13 | genus | bacteria | | 499 |
| acidiphilium | 33 | genus | bacteria | | 522 |
| beijerinckia | 22 | genus | bacteria | | 532 |
| zymomonas | 77 | genus | bacteria | | 541 |
| raoultella terrigena | 16 | species | bacteria | bacteria | 577 |
| serratia liquefaciens | 54 | species | bacteria | bacteria | 614 |
| butyrivibrio | 49 | genus | bacteria | | 830 |
| butyrivibrio fibrisolvens | 49 | species | bacteria | bacteria | 831 |
| fibrobacter | 44 | genus | bacteria | | 832 |
| roseburia | 23 | genus | bacteria | | 841 |
| oxalobacter | 34 | genus | bacteria | | 846 |
| syntrophomonas | 20 | genus | bacteria | | 862 |
| pectinatus | 48 | genus | bacteria | | 864 |
| ruminobacter | 13 | genus | bacteria | | 866 |
| desulfuromonas | 39 | genus | bacteria | | 890 |
| desulfobulbus | 44 | genus | bacteria | | 893 |
| desulfococcus | 28 | genus | bacteria | | 896 |
| desulfomicrobium | 27 | genus | bacteria | | 898 |
| megasphaera elsdenii | 44 | species | bacteria | bacteria | 907 |
| nitrobacter | 54 | genus | bacteria | | 911 |
| nitrosomonas | 92 | genus | bacteria | | 914 |
| thiobacillus | 93 | genus | bacteria | | 919 |
| thiomicrospira | 33 | genus | bacteria | | 933 |
| thiovulum | 17 | genus | bacteria | | 936 |
| hydrogenobacter | 34 | genus | bacteria | | 939 |
| bdellovibrio | 33 | genus | bacteria | | 958 |
| spirillum | 53 | genus | bacteria | | 967 |
| selenomonas ruminantium | 41 | species | bacteria | bacteria | 971 |
| sporohalobacter | 4 | genus | bacteria | | 973 |
| saprospira | 18 | genus | bacteria | | 1007 |
| beggiatoa | 50 | genus | bacteria | | 1021 |
| microscilla | 8 | genus | bacteria | | 1023 |
| thiothrix | 28 | genus | bacteria | | 1030 |
| erythrobacter | 33 | genus | bacteria | | 1041 |
| chromatium | 83 | genus | bacteria | | 1047 |
| ectothiorhodospira | 66 | genus | bacteria | | 1051 |
| thiocapsa | 34 | genus | bacteria | | 1056 |
| rhodobacter | 151 | genus | bacteria | | 1060 |
| rhodocyclus | 35 | genus | bacteria | | 1064 |
| rhodomicrobium | 19 | genus | bacteria | | 1068 |
| rhodopila | 12 | genus | bacteria | | 1070 |
| rhodopseudomonas | 150 | genus | bacteria | | 1073 |
| rhodospirillum | 96 | genus | bacteria | | 1081 |
| chlorobium | 61 | genus | bacteria | | 1091 |
| pelodictyon | 11 | genus | bacteria | | 1099 |
| prosthecochloris | 43 | genus | bacteria | | 1101 |
| clathrochloris | 1 | genus | bacteria | | 1103 |
| chloroflexus | 63 | genus | bacteria | | 1107 |
| heliothrix | 4 | genus | bacteria | | 1109 |
| porphyrobacter | 16 | genus | bacteria | | 1111 |
| aphanocapsa | 28 | genus | bacteria | | 1119 |
| aphanothece | 31 | genus | bacteria | | 1121 |
| chlorogloeopsis | 22 | genus | bacteria | | 1123 |