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Sedimenting Arabinose-Glucose Saccharomyces Coculture

Community ID CommunityMech:000329
Ecological State ENGINEERED
Environment anaerobic sequential-batch yeast coculture
ENVO:01001405

A defined two-member Saccharomyces cerevisiae coculture that partitions glucose and arabinose fermentation between specialist strains. ACE2 deletion gives the arabinose specialist a multicellular, fast-sedimenting phenotype, allowing selective biomass retention during sequential-batch cultivation and faster mixed-sugar conversion.

Taxonomy

Taxon Ontology ID Functional Roles Abundance
glucose-specialist Saccharomyces cerevisiae strain NCBITaxon:4932 N/A
  • PMID:42461012 - SUPPORT (IN_VITRO)
    "Co-cultures of a glucose-specialist S. cerevisiae strain with the sedimenting arabinose specialist"
sedimenting arabinose-specialist Saccharomyces cerevisiae strain NCBITaxon:4932 N/A
  • PMID:42461012 - SUPPORT (IN_VITRO)
    "Deletion of ACE2 in a diploid, arabinose-specialist Saccharomyces cerevisiae strain yielded a multicellular, fast-sedimenting phenotype"

Ecological Interactions

Ecological interaction network for Sedimenting Arabinose-Glucose Saccharomyces Coculture 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 (niche partitioning).
Taxon
Niche partitioning

Glucose-Arabinose Substrate Specialization

NICHE_PARTITIONING

Evidence

  • PMID:42461012 - SUPPORT (IN_VITRO)
    "Co-cultures of a glucose-specialist S. cerevisiae strain with the sedimenting arabinose specialist on a glucose-arabinose mixture"

Selective Sedimentation Accelerates Mixed-Sugar Conversion

NICHE_PARTITIONING

Evidence

  • PMID:42461012 - SUPPORT (IN_VITRO)
    "showed a 29% shorter batch time than corresponding co-cultures with the non-sedimenting arabinose specialist"
  • PMID:42461012 - SUPPORT (IN_VITRO)
    "Increasing the biomass settling period to 1 h further reduced the batch time to 8.1 ± 0.1 h and resulted in near-simultaneous depletion of both sugars"

External Resources

Name Repository Resource ID
Primary publication - sedimenting glucose-arabinose specialist coculture
Primary study of the exact two-member specialist coculture curated in this record. 		OTHER PMID:42461012
  • PMID:42461012 - SUPPORT (IN_VITRO)
    "Co-cultures of a glucose-specialist S. cerevisiae strain with the sedimenting arabinose specialist"
Related exact-species publication - glucose-xylose specialist yeast consortium
A separate two-strain S. cerevisiae specialist consortium with the same species-only composition but different engineered strains and glucose-xylose substrates. 		OTHER PMID:38278783
  • PMID:38278783 - SUPPORT (IN_VITRO)
    "The consortium involves two strains with each specializing in glucose or xylose utilization for ethanol production"
Related exact-species publication - three-strain glucose-xylose-arabinose consortium
A three-strain S. cerevisiae specialist consortium with the same species-only composition but an additional xylose-specialist member. 		OTHER PMID:30010916
  • PMID:30010916 - SUPPORT (IN_VITRO)
    "a consortium of three 'specialist' Saccharomyces cerevisiae strains"

Environmental Factors

Factor Value Unit
Mixed-sugar substrate glucose 10 g/L and arabinose 10 g/L N/A
  • PMID:42461012 - SUPPORT (IN_VITRO)
    "on a glucose-arabinose mixture (10 g·L-1 of each sugar)"
Biomass settling period 30 minutes or 1 hour N/A
  • PMID:42461012 - SUPPORT (IN_VITRO)
    "with a 30-min biomass settling period between cultivation cycles"
  • PMID:42461012 - SUPPORT (IN_VITRO)
    "Increasing the biomass settling period to 1 h further reduced the batch time"
Atmosphere anaerobic N/A
  • PMID:42461012 - SUPPORT (IN_VITRO)
    "anaerobic sequential batch bioreactors"

Growth Media

Glucose-arabinose mixed-sugar fermentation medium

Atmosphere ANAEROBIC

Composition

Component Concentration Unit CHEBI
glucose 10 g/L N/A
arabinose 10 g/L N/A

Preparation notes: The abstract reports sugar concentrations and anaerobic operation but not the basal medium formulation, pH, temperature, or working volume.

Evidence

PMID:42461012

"on a glucose-arabinose mixture (10 g·L-1 of each sugar)"

PMID:42461012

"anaerobic sequential batch bioreactors"