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MSC-1 Dominant Core

Community ID CommunityMech:000042
Ecological State STABLE
Environment arid grassland soil
ENVO:00001998

A naturally evolved dominant core subset of the Model Soil Consortium-1 (MSC-1) containing 13 bacterial species from arid grassland soil. This stable consortium was enriched through serial dilution and passaging on chitin as the primary carbon source. The core members include representatives from Actinobacteria, Bacteroidetes, and Proteobacteria, with key species including Rhodococcus sp., Dyadobacter sp., Taibaiella sp., Bosea sp., and Streptomyces sp. The consortium exhibits cooperative chitin degradation and nitrogen mineralization functions essential for soil carbon and nitrogen cycling.

Taxonomy

Taxon Ontology ID Functional Roles Abundance
Rhodococcus sp. NCBITaxon:1827
PRIMARY_DEGRADER
DOMINANT
Streptomyces sp. NCBITaxon:1931
PRIMARY_DEGRADER
DOMINANT
Dyadobacter sp. NCBITaxon:1914288
PRIMARY_DEGRADER
DOMINANT
Taibaiella sp. NCBITaxon:1869185
SYNTROPHIC_PARTNER
COMMON
Bosea sp. NCBITaxon:85413
SYNTROPHIC_PARTNER
COMMON
Neorhizobium sp. NCBITaxon:1911909
SYNTROPHIC_PARTNER
COMMON
Sphingopyxis sp. NCBITaxon:1908224
SYNTROPHIC_PARTNER
COMMON
Ensifer sp. NCBITaxon:1872086
SYNTROPHIC_PARTNER
COMMON
Variovorax sp. NCBITaxon:1871043
SYNTROPHIC_PARTNER
COMMON
Sinorhizobium sp. NCBITaxon:42445
SYNTROPHIC_PARTNER
COMMON
Mycobacterium sp. NCBITaxon:1785
SYNTROPHIC_PARTNER
COMMON
Actinobacteria bacterium NCBITaxon:201174
SYNTROPHIC_PARTNER
RARE
Bacteroidetes bacterium NCBITaxon:976
SYNTROPHIC_PARTNER
RARE

Ecological Interactions

Ecological interaction network for MSC-1 Dominant Core Bipartite graph where circle nodes represent taxa and colored rectangles represent ecological interactions (cross-feeding, mutualism, syntrophy, competition, commensalism).
Taxon
Cross-feeding
Mutualism
Syntrophy
Competition
Commensalism

Chitin Polymer Degradation

SYNTROPHY

Source Taxon: Rhodococcus sp.

Target Taxon: Streptomyces sp.

Metabolites: chitin (CHEBI:18246), chitooligosaccharide (CHEBI:142816)

Biological Processes:

Downstream Effects:
→ N-Acetylglucosamine Processing

Evidence

  • PMID:32983014 - SUPPORT (IN_VITRO)
    "Chitin was chosen because it is an abundant carbon and nitrogen polymer in soil that often requires the coordinated action of several microorganisms for complete metabolic degradation"

N-Acetylglucosamine Processing

SYNTROPHY

Source Taxon: Dyadobacter sp.

Target Taxon: Mycobacterium sp.

Metabolites: N-acetyl-D-glucosamine (CHEBI:28009), D-glucosamine (CHEBI:15767)

Biological Processes:

Downstream Effects:
→ Nitrogen Mineralization

Evidence

  • PMID:32983014 - SUPPORT (IN_VITRO)
    "Co-abundance analyses highlighted interspecies interactions and helped to define keystone species, including Mycobacterium, Rhodococcus, and Rhizobiales taxa"

Nitrogen Mineralization

SYNTROPHY

Source Taxon: Mycobacterium sp.

Target Taxon: Neorhizobium sp.

Metabolites: ammonium (CHEBI:28938), organic nitrogen compound (CHEBI:35352)

Biological Processes:

Evidence

  • PMID:32983014 - SUPPORT (IN_VITRO)
    "Chitin was chosen because it is an abundant carbon and nitrogen polymer in soil that often requires the coordinated action of several microorganisms for complete metabolic degradation"

Syntrophic Partnership with Taibaiella

SYNTROPHY

Source Taxon: Rhodococcus sp.

Target Taxon: Taibaiella sp.

Biological Processes:

  • interspecies interaction between organisms (GO:0044419)

Evidence

  • PMID:32983014 - SUPPORT (IN_VITRO)
    "Chitin was chosen because it is an abundant carbon and nitrogen polymer in soil that often requires the coordinated action of several microorganisms for complete metabolic degradation"

Syntrophic Partnership with Bosea

SYNTROPHY

Source Taxon: Mycobacterium sp.

Target Taxon: Bosea sp.

Biological Processes:

  • interspecies interaction between organisms (GO:0044419)

Evidence

  • PMID:32983014 - SUPPORT (IN_VITRO)
    "Co-abundance analyses highlighted interspecies interactions and helped to define keystone species, including Mycobacterium, Rhodococcus, and Rhizobiales taxa"

Syntrophic Partnership with Sphingopyxis

SYNTROPHY

Source Taxon: Streptomyces sp.

Target Taxon: Sphingopyxis sp.

Biological Processes:

  • interspecies interaction between organisms (GO:0044419)

Evidence

  • PMID:32983014 - SUPPORT (IN_VITRO)
    "Chitin was chosen because it is an abundant carbon and nitrogen polymer in soil that often requires the coordinated action of several microorganisms for complete metabolic degradation"

Syntrophic Partnership with Ensifer

SYNTROPHY

Source Taxon: Neorhizobium sp.

Target Taxon: Ensifer sp.

Biological Processes:

  • interspecies interaction between organisms (GO:0044419)

Evidence

  • PMID:32983014 - SUPPORT (IN_VITRO)
    "Co-abundance analyses highlighted interspecies interactions and helped to define keystone species, including Mycobacterium, Rhodococcus, and Rhizobiales taxa"

Syntrophic Partnership with Variovorax

SYNTROPHY

Source Taxon: Rhodococcus sp.

Target Taxon: Variovorax sp.

Biological Processes:

  • interspecies interaction between organisms (GO:0044419)

Evidence

  • PMID:32983014 - SUPPORT (IN_VITRO)
    "Chitin was chosen because it is an abundant carbon and nitrogen polymer in soil that often requires the coordinated action of several microorganisms for complete metabolic degradation"

Syntrophic Partnership with Sinorhizobium

SYNTROPHY

Source Taxon: Mycobacterium sp.

Target Taxon: Sinorhizobium sp.

Biological Processes:

  • interspecies interaction between organisms (GO:0044419)

Evidence

  • PMID:32983014 - SUPPORT (IN_VITRO)
    "Co-abundance analyses highlighted interspecies interactions and helped to define keystone species, including Mycobacterium, Rhodococcus, and Rhizobiales taxa"

Syntrophic Partnership with Actinobacteria

SYNTROPHY

Source Taxon: Streptomyces sp.

Target Taxon: Actinobacteria bacterium

Biological Processes:

  • interspecies interaction between organisms (GO:0044419)

Evidence

  • PMID:32983014 - SUPPORT (IN_VITRO)
    "Several soil consortia were derived that had tractable richness (30-50 OTUs) with diverse phyla representative of the native soil, including Actinobacteria, Bacteroidetes, Firmicutes, Proteobacteria, and Verrucomicrobia"

Syntrophic Partnership with Bacteroidetes

SYNTROPHY

Source Taxon: Dyadobacter sp.

Target Taxon: Bacteroidetes bacterium

Biological Processes:

  • interspecies interaction between organisms (GO:0044419)

Evidence

  • PMID:32983014 - SUPPORT (IN_VITRO)
    "Several soil consortia were derived that had tractable richness (30-50 OTUs) with diverse phyla representative of the native soil, including Actinobacteria, Bacteroidetes, Firmicutes, Proteobacteria, and Verrucomicrobia"

Environmental Factors

Factor Value Unit
Source environment arid grassland soil N/A
Primary substrate chitin N/A
Environmental conditions arid conditions N/A
Community complexity reduced complexity model N/A
Functional redundancy genomic redundancy N/A
Storage stability cryopreservation N/A