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Pseudomonas-Paracoccus Bifenthrin-Degrading Consortium

Community ID CommunityMech:000331
Ecological State ENGINEERED
Environment aqueous bifenthrin-degradation laboratory assay
ENVO:01001405
Modeled Environment bifenthrin-contaminated soil
ENVO:00002116

A defined two-strain consortium of Pseudomonas aeruginosa PA and Paracoccus pantotrophus PP assembled from contaminated-soil isolates for bifenthrin biodegradation. P. aeruginosa PA hydrolyzes bifenthrin, while P. pantotrophus PP oxidizes the resulting bifenthrin-alcohol intermediate; PA extracellular polymeric substances also modify the local chemical microenvironment.

Taxonomy

Taxon Ontology ID Functional Roles Abundance
Pseudomonas aeruginosa PA NCBITaxon:287
PRIMARY_DEGRADER
N/A
  • PMID:42269294 - SUPPORT (IN_VITRO)
    "Pseudomonas aeruginosa strain PA (PA) and Paracoccus pantotrophus strain PP (PP)"
  • PMID:42269294 - SUPPORT (IN_VITRO)
    "PA served as the hydrolyzer, cleaving the ester bond of bifenthrin"
Paracoccus pantotrophus PP NCBITaxon:82367
PRIMARY_DEGRADER CROSS_FEEDER
N/A
  • PMID:42269294 - SUPPORT (IN_VITRO)
    "Pseudomonas aeruginosa strain PA (PA) and Paracoccus pantotrophus strain PP (PP)"
  • PMID:42269294 - SUPPORT (IN_VITRO)
    "PP, as the oxidizer, efficiently degraded bifenthrin alcohol"

Ecological Interactions

Ecological interaction network for Pseudomonas-Paracoccus Bifenthrin-Degrading Consortium Bipartite graph where circle nodes represent taxa and each ecological interaction is drawn as a distinct non-circular symbol, with colour repeating the same distinction (cross-feeding, niche partitioning).
Taxon
Cross-feeding
Niche partitioning

Hydrolyzer-oxidizer division of labor

NICHE_PARTITIONING

Evidence

  • PMID:42269294 - SUPPORT (IN_VITRO)
    "PA served as the hydrolyzer, cleaving the ester bond of bifenthrin to generate bifenthrin alcohol and trifluorochloro-chrysanthemic acid, while PP, as the oxidizer, efficiently degraded bifenthrin alcohol"
  • PMID:42269294 - SUPPORT (IN_VITRO)
    "relieving steric hindrance on PA hydrolases and establishing an essential cooperative degradation partnership"

Bifenthrin-intermediate cross-feeding

CROSS_FEEDING

Source Taxon: Pseudomonas aeruginosa PA

Target Taxon: Paracoccus pantotrophus PP

Evidence

  • PMID:42269294 - SUPPORT (IN_VITRO)
    "PA served as the hydrolyzer, cleaving the ester bond of bifenthrin to generate bifenthrin alcohol and trifluorochloro-chrysanthemic acid, while PP, as the oxidizer, efficiently degraded bifenthrin alcohol"

External Resources

Name Repository Resource ID
Primary publication - PA+PP bifenthrin consortium
Primary mechanistic study of the exact PA+PP synthetic consortium. 		OTHER PMID:42269294
  • PMID:42269294 - SUPPORT (IN_VITRO)
    "constructed into a synthetic consortium (PA+PP), which synergistically enhanced bifenthrin degradation"

Environmental Factors

Factor Value Unit
PA extracellular polymeric substances promoted bifenthrin adsorption and electron transfer N/A
  • PMID:42269294 - SUPPORT (IN_VITRO)
    "PA-secreted extracellular polymeric substances (EPS), which are rich in polysaccharides, proteins, and humic-like components, promoted bifenthrin adsorption and electron transfer"
Initial bifenthrin concentration 100 mg/L
  • PMID:42269294 - SUPPORT (IN_VITRO)
    "bifenthrin was introduced into the aqueous MSM system at a nominal initial concentration of 100 mg/L using an acetone stock solution"
Tween 80 dispersant 0.1 percent
  • PMID:42269294 - SUPPORT (IN_VITRO)
    "dispersed with 0.1% Tween 80"
Bifenthrin removal 92.38 percent
  • PMID:42269294 - SUPPORT (IN_VITRO)
    "resulting in 92.38% removal within 7 days"
Consortium degradation rate constant 0.26 d-1
  • PMID:42269294 - SUPPORT (IN_VITRO)
    "k3 = 0.26 d-1 > k1 = 0.15 d-1> k2 = 0.10 d-1"

Growth Media

Bifenthrin aqueous mineral salts medium assay

Composition

Component Concentration Unit CHEBI
mineral salts medium N/A N/A N/A
bifenthrin 100 mg/L N/A
Tween 80 0.1 percent N/A

Preparation notes: Bifenthrin was added from an acetone stock. The abstract does not report the mineral salts medium formulation, inoculum ratio, temperature, pH, or agitation.

Evidence

PMID:42269294

"aqueous MSM system at a nominal initial concentration of 100 mg/L using an acetone stock solution and dispersed with 0.1% Tween 80"