Table 2.
The distribution of nitrate-sensitive bacteria among microbiome modules 1–8 (MM1-MM8) and module-driver species exceeding LDA score threshold of 2. Bold font indicates nitrate-sensitive module drivers. * No taxonomic unit exceeded LDA threshold of 2. PL, placebo; BR, nitrate.
| Microbiome module | Number of taxonomic units | Nitrate-sensitive species (% change from PL to BR) | Module-driver species |
|---|---|---|---|
|
MM1 Turquoise |
243 |
Bacillus amyloliquefaciens (−37%) Phycisphaera mikurensis (+118%) Ruminococcus bromii (−56%) Spirochaeta africana (-66%) |
Clostridium botulinum Selemonas ruminantium Spirochaeta africana |
|
MM2 Green |
48 |
Atopobium parvulum (−60%) Clostridium difficile (-79%) Megasphaera elsdenii (-80%) Prevotella intermedia (-46%) Prevotella melaninogenica (−56%) Ruminococcus torques (-78%) Veillonella parvula (−63%) |
Clostridium difficile Megasphaera elsdenii Prevotella intermedia Ruminococcus torques |
|
MM3 Pink |
24 | Tetragenococcus halophilus (−30%) | * |
|
MM4 Blue |
71 |
Butyrivibrio proteoclasticus (−41%) Clostridium phytofermentans (−47%) Roseburia hominis (-52%) |
Bacteroides vulgatus Campylobacter curvus Roseburia hominis Tannerella forsythia |
|
MM5 Yellow |
57 |
Capnocytophaga orchracea (+96%) Flavobacterium indicum (+183%) Neisseria lactamica (+175%) Neisseria meningitidis (+305%) Nitrosococcus halophilus (+115%) Ornithobacterium rhinotracheale (+109%) |
Haemophilus parainfluenzae Neisseria gonorrhoeae Neisseria lactamica Nitrosococcus halophilus Riemerella anatipestifer |
|
MM6 Brown |
71 | Rothia mucilaginosa (+259%) |
Rothia mucilaginosa Streptococcus pyogenes |
|
MM7 Red |
46 | – | * |
|
MM8 Black |
24 | – | * |
| Unassigned Grey |
26 |
Leptothrix cholodnii (+628%) Variovax paradoxus (+544%) |