A three-member banana rhizosphere SynCom designed for biological control of Fusarium oxysporum f. sp. cubense tropical race 4.
Taxonomy
| Taxon | Ontology ID | Functional Roles | Abundance |
|---|---|---|---|
| Pseudomonas chlororaphis | NCBITaxon:587753 · TaxonMech · TraitMech |
CROSS_FEEDER
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N/A |
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| Bacillus velezensis | NCBITaxon:492670 · TaxonMech · TraitMech |
CROSS_FEEDER
|
N/A |
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| Trichoderma virens | NCBITaxon:29875 · TaxonMech · TraitMech |
CROSS_FEEDER
|
N/A |
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Ecological Interactions
The graph shows only explicitly linked interaction participants. Community members without an asserted participant link are omitted; membership alone does not imply an interaction.
SynCom1.0 and SynCom1.1 Pot Biocontrol
The 44-member SynCom1.0 and seven-member SynCom1.1 each reduced banana Fusarium-wilt symptom severity by about 35% in pot experiments. These are host disease outcomes for earlier mixtures, not reciprocal-fitness measurements or tests of the canonical three-member SynCom1.2 alone.
Evidence
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PMID:35992653 - SUPPORT (IN_VIVO)"a small one such as SynCom 1.1 (seven highly effective isolates) provided similar disease control (35% symptom severity reduction)"
SynCom1.1 Cross-Inhibition Mapping
COMPETITIONIn-vitro assays showed inhibition of Foc TR4 by selected biocontrol isolates, inhibition among some SynCom1.1 members, and inhibition of beneficial isolates by the pathogen. COMPETITION denotes the reported reciprocal negative effects, not every isolate pair. PARTIAL - fusaric-acid sensitivity supports a candidate mediator, but production by the tested Foc strain and necessary mediation of the soil response were not established in the inspected main text.
Metabolites: fusaric acid (CHEBI:5199 · MediaIngredientMech · CMMMech)
Biological Processes:
- interspecies interaction between organisms (GO:0044419 · PathwayMech)
Evidence
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PMID:35992653 - SUPPORT (IN_VITRO)"revealed that beneficial microorganisms not only antagonized the pathogen but also some of the SynCom constituents"
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PMID:35992653 - PARTIAL (IN_VITRO)"fusaric acid, known as one of the secondary metabolites of Fusarium species, might be involved in such an interaction"
Staggered SynCom1.2 Soil Biocontrol
Non-simultaneous application of PS5, BN8.2 and T2C1.4 delayed Fusarium-wilt progression. Benefit in the higher-pathogen-pressure trial C was transient; the lower-pressure trial D showed stronger disease-endpoint protection. Staggering was intended to reduce cross-inhibition, but reduced inhibition in soil was not directly demonstrated and is not inferred from disease scores alone.
Evidence
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PMID:35992653 - SUPPORT (IN_VIVO)"A non-simultaneous soil application of these isolates (to diminish cross-inhibition) delayed FWB progress over time"
Knowledge gaps & discussions (1)
KNOWLEDGE_GAP OPEN Which mechanisms and inoculation order explain the three-member SynCom protection?
Screening 96 isolates and choosing three strains are design steps, not ecological interactions. The preceding 44- and seven-member communities differ from SynCom1.2. Main Methods and Discussion invert the PS5/T2C1.4 timing; Supplementary S5 and figure images remain unread. Fusaric-acid production, soil cross-inhibition and causal mediation of protection need exact-system tests. Non-graph role/timing follow-up is #1262.
Attaches to: ecological_interactions#SynCom1.0 and SynCom1.1 Pot Biocontrol, ecological_interactions#SynCom1.1 Cross-Inhibition Mapping, ecological_interactions#Staggered SynCom1.2 Soil Biocontrol
Environmental Factors
| Factor | Value | Unit |
|---|---|---|
| defined synthetic community design | SynCom 1.2 combined Pseudomonas chlororaphis subsp. piscium PS5, Bacillus velezensis BN8.2, and Trichoderma virens T2C1.4. | N/A |
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Growth Media
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