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Soil Corrinoid Reservoir Microbial Community

Community ID CommunityMech:000221
Ecological State PERTURBED
Environment grassland soil
ENVO:00005750

A grassland soil microbial community in which the structurally diverse corrinoid (vitamin B12-related) cofactor pool serves as a key determinant of community structure. Analysis of metagenome-assembled genomes implicates Thermoproteota, Actinobacteria, and Proteobacteria as the principal corrinoid suppliers. Corrinoids accumulate adhered to the soil matrix at levels exceeding the requirements of cultured bacteria. Enrichment cultures and soil microcosms seeded with different corrinoids exhibit distinct shifts in bacterial community composition, supporting the hypothesis that corrinoid structure shapes communities, with environmental context modulating both community-level and taxon-specific responses.

Taxonomy

Taxon Ontology ID Functional Roles Abundance
corrinoid-supplying Thermoproteota NCBITaxon:651137
PRIMARY_PRODUCER
N/A
  • PMID:38832716 - SUPPORT (IN_VIVO)
    "corrinoids are supplied to the community by members of the archaeal and bacterial phyla Thermoproteota, Actinobacteria, and Proteobacteria"
corrinoid-supplying Actinobacteria NCBITaxon:201174
PRIMARY_PRODUCER
N/A
  • PMID:38832716 - SUPPORT (IN_VIVO)
    "corrinoids are supplied to the community by members of the archaeal and bacterial phyla Thermoproteota, Actinobacteria, and Proteobacteria"
corrinoid-supplying Proteobacteria NCBITaxon:1224
PRIMARY_PRODUCER
N/A
  • PMID:38832716 - SUPPORT (IN_VIVO)
    "corrinoids are supplied to the community by members of the archaeal and bacterial phyla Thermoproteota, Actinobacteria, and Proteobacteria"

Ecological Interactions

Ecological interaction network for Soil Corrinoid Reservoir Microbial Community 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
Niche partitioning
Colonization facilitation
Strain competition
Predation

Corrinoid Structure Shapes Bacterial Community Composition

NICHE_PARTITIONING

Metabolites: cobalamin (CHEBI:23334)

Biological Processes:

Evidence

  • PMID:38832716 - SUPPORT (IN_VIVO)
    "soil microcosms seeded with different corrinoids showed distinct shifts in bacterial community composition"
  • PMID:38832716 - SUPPORT (IN_VIVO)
    "corrinoid structure can shape communities"

Soil-Matrix Corrinoid Reservoir Supports Stability

CROSS_FEEDING

Evidence

  • PMID:38832716 - SUPPORT (IN_VIVO)
    "Corrinoids were found largely adhered to the soil matrix in a grassland soil, at levels exceeding those required by cultured bacteria"
  • PMID:38832716 - SUPPORT (IN_VIVO)
    "environmental micronutrient reservoirs promote community stability"

External Resources

Name Repository Resource ID
Primary publication for the soil corrinoid reservoir community
PubMed record for the Hallberg et al. 2024 ISME J paper on soil microbial community response to corrinoids. 		OTHER PMID:38832716
  • PMID:38832716 - SUPPORT (IN_VIVO)
    "corrinoids as key determinants of soil microbiome structure"
DOI landing page
DOI link to the ISME J paper. 		OTHER doi:10.1093/ismejo/wrae094

Environmental Factors

Factor Value Unit
Corrinoid amendment enrichments seeded with different corrinoid structures N/A
  • PMID:38832716 - SUPPORT (IN_VITRO)
    "Enrichment cultures and soil microcosms seeded with different corrinoids showed distinct shifts in bacterial community composition"