A syntrophic 3-member anaerobic consortium for degradation of cinnamate via β-oxidation to benzoate, consisting of Papillibacter cinnamivorans, Syntrophus sp., and Methanobacterium formicicum. P. cinnamivorans performs β-oxidation of cinnamate to benzoate, followed by syntrophic benzoate degradation by Syntrophus sp. to acetate, H2, and CO2, with the methanogen consuming H2 to produce methane. This stepwise aromatic compound degradation pathway is important for anaerobic bioremediation.
Taxonomy
| Taxon | Ontology ID | Functional Roles | Abundance |
|---|---|---|---|
| Papillibacter cinnamivorans | NCBITaxon:100176 |
PRIMARY_DEGRADER
|
DOMINANT |
| Syntrophus sp. | NCBITaxon:2426 |
SYNTROPHIC_PARTNER
|
ABUNDANT |
| Methanobacterium formicicum | NCBITaxon:2162 |
SYNTROPHIC_PARTNER
|
ABUNDANT |
Ecological Interactions
Cinnamate β-Oxidation to Benzoate
COMMENSALISMSource Taxon: Papillibacter cinnamivorans
Metabolites: cinnamate (CHEBI:23252), benzoate (CHEBI:30746)
Biological Processes:
- fatty acid beta-oxidation (GO:0006635)
- aromatic compound catabolic process (GO:0019439)
Evidence
-
PMID:12432464 - SUPPORT (IN_VITRO)"In the presence of bromoethanesulfonic acid (BESA), cinnamate was transformed to benzoate, whereas under methanogenic conditions without BESA, cinnamate was first transformed to benzoate via beta-oxidation and subsequently completely degraded into acetate, CH(4), and CO(2)"
Syntrophic Benzoate Degradation
SYNTROPHYSource Taxon: Syntrophus sp.
Metabolites: benzoate (CHEBI:30746), acetate (CHEBI:30089), hydrogen (CHEBI:49637), carbon dioxide (CHEBI:16526)
Biological Processes:
- benzoate metabolic process (GO:0018874)
Evidence
-
PMID:12432464 - SUPPORT (IN_VITRO)"Papillibacter cinnamivorans was responsible for benzoate production from cinnamate, whereas a syntrophic association between Syntrophus sp. and the methanogen degraded benzoate to acetate, CH(4), and CO(2)"
Methanogenesis
SYNTROPHYSource Taxon: Methanobacterium formicicum
Metabolites: hydrogen (CHEBI:49637), carbon dioxide (CHEBI:16526), methane (CHEBI:16183)
Biological Processes:
- methane biosynthetic process (GO:0015948)
Evidence
-
PMID:12432464 - SUPPORT (IN_VITRO)"In the presence of bromoethanesulfonic acid (BESA), cinnamate was transformed to benzoate, whereas under methanogenic conditions without BESA, cinnamate was first transformed to benzoate via beta-oxidation and subsequently completely degraded into acetate, CH(4), and CO(2)"
Environmental Factors
| Factor | Value | Unit |
|---|---|---|
| Anaerobic conditions | strict | N/A |
| Substrate | cinnamate | N/A |
| Degradation pathway | stepwise (cinnamate → benzoate → acetate/CH4/CO2) | N/A |