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313 changes: 313 additions & 0 deletions kb/communities/TYQ1_Nematode_Biocontrol_SynCom.yaml
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name: TYQ1 Nematode Biocontrol SynCom
description: 'An 8-member synthetic community centered on keystone species Rhizobium pusense TYQ1,
which is enriched during root-knot nematode (Meloidogyne incognita) infection of cucumber (Cucumis
sativus cv. Zhongnong 26). TYQ1 recruits 7 biomarker species that enhance biofilm formation and
metabolic cross-feeding, creating a tightly interconnected network for synergistic nematode
suppression. The community was identified through stress-induced enrichment analysis and validated
across 12 soil types, demonstrating that keystone species recruitment can guide functional microbial
community assembly to synergistically enhance plant health.

'
ecological_state: ENGINEERED
community_origin: ENGINEERED
community_category: RHIZOSPHERE
engineering_design:
objective: Assemble a functional synthetic community centered on stress-induced keystone species
for synergistic root-knot nematode suppression in cucumber
assembly_strategy: Stress-induced enrichment identification of keystone Rhizobium pusense TYQ1
followed by recruitment of biomarker species
perturbation_design: 'Tested across 3 soil types (Beijing sandy loam, Shandong silty loam,
Zhejiang loam) and validated across 12 soil types. Pathogen challenge with 300 J2s Meloidogyne
incognita per seedling.'
measurement_endpoints:
- 16S rRNA amplicon sequencing
- Biofilm formation assays
- Metabolic interaction network analysis
- Nematode suppression assays
evidence:
- reference: PMID:41660888
supports: SUPPORT
evidence_source: IN_VIVO
snippet: stress-induced recruitment of keystone species can guide functional microbial community
assembly to synergistically enhance plant health
explanation: Documents the engineering rationale for the TYQ1-centered SynCom
environment_term:
preferred_term: cucumber rhizosphere
term:
id: ENVO:00005801
label: rhizosphere
notes: 'Rhizosphere of Cucumis sativus cv. Zhongnong 26 (RKN-susceptible cucumber). Root-knot
nematode infection restructured the rhizosphere bacterial community regardless of soil type.

'
taxonomy:
- taxon_term:
preferred_term: Rhizobium pusense TYQ1
term:
id: NCBITaxon:655028
label: Rhizobium pusense
notes: 'Keystone species and central metabolic hub. Directly inhibits root-knot nematodes and
coordinates biofilm formation across the community. Its enrichment causes restructuring of
the rhizobacterial community, leading to recruitment of 7 biomarker species.

'
strain_designation:
strain_name: TYQ1
isolation_source: Cucumber rhizosphere under RKN stress
functional_role:
- PRIMARY_DEGRADER
abundance_level: DOMINANT
evidence:
- reference: PMID:41660888
supports: SUPPORT
evidence_source: IN_VIVO
snippet: This strain not only directly inhibited RKNs but also caused the restructuring of the
rhizobacterial community, thereby leading to the enrichment of multiple biomarker species
explanation: Documents TYQ1 as keystone species with direct nematicidal and community-restructuring
roles
- taxon_term:
preferred_term: Sphingomonas panni SP
term:
id: NCBITaxon:165696
label: Sphingomonas panni
notes: Biomarker species recruited by TYQ1 enrichment (OTU2477).
strain_designation:
strain_name: SP
isolation_source: Cucumber rhizosphere under RKN stress
functional_role:
- CROSS_FEEDER
evidence:
- reference: PMID:41660888
supports: SUPPORT
evidence_source: IN_VIVO
snippet: These enriched microorganisms, in collaboration with TYQ1, enhanced the biofilm-forming
ability of the community and established a tightly interconnected metabolic interaction network
explanation: Documents SP as recruited biomarker contributing to biofilm and metabolic network
- taxon_term:
preferred_term: Sphingomonas xanthus SX
term:
id: NCBITaxon:13687
label: Sphingomonas
notes: 'Biomarker species recruited by TYQ1 enrichment (OTU1716). Genus-level NCBITaxon used
as species-level ID not available.
Comment on lines +87 to +92
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Copilot AI Mar 5, 2026

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The Sphingomonas xanthus SX entry uses a genus-level NCBITaxon ID (NCBITaxon:13687, label Sphingomonas) while the preferred_term claims a species-level identification (Sphingomonas xanthus). This is internally inconsistent and can mislead downstream consumers (e.g., taxonomy summaries). Either update the taxon name to genus-level (e.g., Sphingomonas sp./Sphingomonas sp. SX) to match the ID+label, or switch to a species-level NCBITaxon ID if available.

Copilot uses AI. Check for mistakes.

'
strain_designation:
strain_name: SX
isolation_source: Cucumber rhizosphere under RKN stress
functional_role:
- CROSS_FEEDER
abundance_level: DOMINANT
abundance_value: '>1% relative abundance'
evidence:
- reference: PMID:41660888
supports: SUPPORT
evidence_source: IN_VIVO
snippet: These enriched microorganisms, in collaboration with TYQ1, enhanced the biofilm-forming
ability of the community and established a tightly interconnected metabolic interaction network
explanation: Documents SX as recruited biomarker contributing to biofilm and metabolic network
- taxon_term:
preferred_term: Acidovorax soli AS
term:
id: NCBITaxon:459536
label: Acidovorax soli
notes: Biomarker species recruited by TYQ1 enrichment (OTU2167).
strain_designation:
strain_name: AS
isolation_source: Cucumber rhizosphere under RKN stress
functional_role:
- CROSS_FEEDER
evidence:
- reference: PMID:41660888
supports: SUPPORT
evidence_source: IN_VIVO
snippet: These enriched microorganisms, in collaboration with TYQ1, enhanced the biofilm-forming
ability of the community and established a tightly interconnected metabolic interaction network
explanation: Documents AS as recruited biomarker contributing to biofilm and metabolic network
- taxon_term:
preferred_term: Acidovorax facilis AF
term:
id: NCBITaxon:12916
label: Acidovorax facilis
notes: Biomarker species with significant nematicidal activity (OTU2649).
strain_designation:
strain_name: AF
isolation_source: Cucumber rhizosphere under RKN stress
functional_role:
- PRIMARY_DEGRADER
evidence:
- reference: PMID:41660888
supports: SUPPORT
evidence_source: IN_VIVO
snippet: the TYQ1-centered synthetic community exhibited more efficient and stable inhibition
of RKNs
explanation: Documents AF as a member with significant nematicidal activity
- taxon_term:
preferred_term: Novosphingobium subterraneum NS
term:
id: NCBITaxon:165699
label: Novosphingobium subterraneum
notes: Biomarker species recruited by TYQ1 enrichment (OTU613).
strain_designation:
strain_name: NS
isolation_source: Cucumber rhizosphere under RKN stress
functional_role:
- CROSS_FEEDER
evidence:
- reference: PMID:41660888
supports: SUPPORT
evidence_source: IN_VIVO
snippet: These enriched microorganisms, in collaboration with TYQ1, enhanced the biofilm-forming
ability of the community and established a tightly interconnected metabolic interaction network
explanation: Documents NS as recruited biomarker contributing to biofilm and metabolic network
- taxon_term:
preferred_term: Xenophilus aerolatus XA
term:
id: NCBITaxon:507237
label: Xenophilus aerolatus
notes: Biomarker species recruited by TYQ1 enrichment (OTU2715).
strain_designation:
strain_name: XA
isolation_source: Cucumber rhizosphere under RKN stress
functional_role:
- CROSS_FEEDER
evidence:
- reference: PMID:41660888
supports: SUPPORT
evidence_source: IN_VIVO
snippet: These enriched microorganisms, in collaboration with TYQ1, enhanced the biofilm-forming
ability of the community and established a tightly interconnected metabolic interaction network
explanation: Documents XA as recruited biomarker contributing to biofilm and metabolic network
- taxon_term:
preferred_term: Microbacterium arborescens MA
term:
id: NCBITaxon:2028
label: Microbacterium arborescens
notes: Biomarker species recruited by TYQ1 enrichment (OTU11267).
strain_designation:
strain_name: MA
isolation_source: Cucumber rhizosphere under RKN stress
functional_role:
- CROSS_FEEDER
evidence:
- reference: PMID:41660888
supports: SUPPORT
evidence_source: IN_VIVO
snippet: These enriched microorganisms, in collaboration with TYQ1, enhanced the biofilm-forming
ability of the community and established a tightly interconnected metabolic interaction network
explanation: Documents MA as recruited biomarker contributing to biofilm and metabolic network
ecological_interactions:
- name: Keystone-Mediated Community Recruitment
description: 'TYQ1 enrichment during root-knot nematode infection causes restructuring of the
rhizobacterial community, leading to enrichment of 7 biomarker species. RKN infection
restructured the rhizosphere bacterial community in RKN-susceptible cucumber plants regardless
of soil type.

'
interaction_type: MUTUALISM
source_taxon:
preferred_term: Rhizobium pusense TYQ1
term:
id: NCBITaxon:655028
label: Rhizobium pusense
evidence:
- reference: PMID:41660888
supports: SUPPORT
evidence_source: IN_VIVO
snippet: root-knot nematode (RKN) infection restructured the rhizosphere bacterial community in
RKN-susceptible cucumber plants, regardless of the soil type
explanation: Documents stress-induced community restructuring mediated by TYQ1
- name: Synergistic Biofilm Formation
description: 'All 7 recruited biomarker species show mutual attraction to TYQ1 and enhance
biofilm-forming ability of the community. Biofilm formation is a key mechanism for community
cohesion and nematode suppression.

'
interaction_type: MUTUALISM
source_taxon:
preferred_term: Rhizobium pusense TYQ1
term:
id: NCBITaxon:655028
label: Rhizobium pusense
evidence:
- reference: PMID:41660888
supports: SUPPORT
evidence_source: IN_VIVO
snippet: These enriched microorganisms, in collaboration with TYQ1, enhanced the biofilm-forming
ability of the community and established a tightly interconnected metabolic interaction network
explanation: Documents synergistic biofilm enhancement across the SynCom
- name: Metabolic Cross-Feeding Network
description: 'TYQ1 serves as the central metabolic hub in a tightly interconnected metabolic
interaction network with the 7 biomarker species, enabling metabolic cross-feeding that supports
community function.

'
interaction_type: CROSS_FEEDING
source_taxon:
preferred_term: Rhizobium pusense TYQ1
term:
id: NCBITaxon:655028
label: Rhizobium pusense
evidence:
- reference: PMID:41660888
supports: SUPPORT
evidence_source: IN_VIVO
snippet: These enriched microorganisms, in collaboration with TYQ1, enhanced the biofilm-forming
ability of the community and established a tightly interconnected metabolic interaction network
explanation: Documents TYQ1 as central metabolic hub in cross-feeding network
- name: Synergistic Nematode Suppression
description: 'The complete 8-member TYQ1-centered SynCom exhibits more efficient and stable
root-knot nematode inhibition than individual members alone, demonstrating emergent synergistic
biocontrol activity.

'
interaction_type: MUTUALISM
evidence:
- reference: PMID:41660888
supports: SUPPORT
evidence_source: IN_VIVO
snippet: the TYQ1-centered synthetic community exhibited more efficient and stable inhibition
of RKNs
explanation: Documents synergistic nematode suppression by the complete SynCom
associated_datasets:
- name: 16S Amplicon Sequencing (Rhizosphere)
dataset_type: AMPLICON_16S
repository: NCBI_BIOPROJECT
accession: PRJNA1313845
url: https://www.ncbi.nlm.nih.gov/bioproject/PRJNA1313845
description: 16S rRNA amplicon sequencing data from cucumber rhizosphere under RKN infection
across multiple soil types.
evidence:
- reference: PMID:41660888
supports: SUPPORT
evidence_source: IN_VIVO
snippet: root-knot nematode (RKN) infection restructured the rhizosphere bacterial community in
RKN-susceptible cucumber plants, regardless of the soil type
explanation: Documents amplicon-based community profiling across soil types
- name: 16S Amplicon Sequencing (SynCom Validation)
dataset_type: AMPLICON_16S
repository: NCBI_BIOPROJECT
accession: PRJNA1313795
url: https://www.ncbi.nlm.nih.gov/bioproject/PRJNA1313795
description: 16S rRNA amplicon sequencing data from SynCom validation experiments.
evidence:
- reference: PMID:41660888
supports: SUPPORT
evidence_source: IN_VIVO
snippet: the TYQ1-centered synthetic community exhibited more efficient and stable inhibition
of RKNs
explanation: Documents SynCom validation sequencing data
- name: Transcriptomics
dataset_type: METATRANSCRIPTOME
repository: NCBI_BIOPROJECT
accession: PRJNA1314495
url: https://www.ncbi.nlm.nih.gov/bioproject/PRJNA1314495
description: Transcriptomic data for understanding gene expression in TYQ1-centered SynCom during
nematode biocontrol.
evidence:
- reference: PMID:41660888
supports: SUPPORT
evidence_source: IN_VIVO
snippet: stress-induced recruitment of keystone species can guide functional microbial community
assembly to synergistically enhance plant health
explanation: Documents transcriptomic analysis of the SynCom