Abstract
Bioconsortia, based on Chaetomium globosum (isolate CgCG-2), Pseudomonas putida (PpTS-1), Bacillus subtilis (BsS2BC-1), and Trichoderma harzianum (ThS17TH), were designed to develop eco-friendly alternatives for biocontrol of vascular wilt of tomato caused by Fusarium oxysporum f. sp. lycopersici (Fol). In vitro compatibilities of microbes in these consortia were assessed for growth, antagonism, and biocontrol-related gene expression. In these bioassays, the biocontrol isolates had positive interactions for the tested parameters. In pot experiments, seed and soil applications of culture suspensions of five different isolate mixtures were assessed, in comparisons with individual isolates, for efficacy in vascular wilt control after challenge inoculations with Fol under polyhouse conditions. Compared to experimental controls, the biocontrol isolate mixtures reduced vascular wilt incidence and promoted plant growth. PpTS-1 + CgCG-2 + ThS17TH was the most effective microbial consortium, giving 71% reduction of Fusarium wilt incidence compared to non-treated controls. This reduced incidence increased plant growth by 135%. Upregulation of genes encoding for allene oxide cyclase, pathogenesis-related proteins 3, and 5, and β-1,3-glucanase in tomato plants indicated that the reduction in vascular wilt by the consortia could be partly plant-mediated. This study provides new insights into the development of microbial-based consortia for the biocontrol of vascular wilt in tomato.
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Claims 6
Claim · model-written summary
Biocontrol isolates interacted positively in vitro for growth, antagonism, and biocontrol gene expression.
- Taxon
- tomato
Solanum lycopersicumt0 - Outcome
- positive interactionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“biocontrol isolates had positive interactions for the tested parameters”
t0“tomato”
Claim · model-written summary
Isolate mixtures reduced vascular wilt incidence relative to experimental controls.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- biocontrol isolate mixturese0
- Interactor
- Fusarium oxysporum f. sp. lycopersici
Fusarium oxysporum f. sp. lycopersicie1pathogen - Outcome
- vascular wilt incidencee0
- Direction
- reducede0
- Comparator
- experimental controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared to experimental controls, the biocontrol isolate mixtures reduced vascular wilt incidence”
e1“Fusarium oxysporum f. sp. lycopersici (Fol)”
t0“tomato”
Claim · model-written summary
Isolate mixtures promoted tomato plant growth relative to controls.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- biocontrol isolate mixturese0
- Outcome
- plant growthe0
- Direction
- promotede0
- Comparator
- experimental controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared to experimental controls, the biocontrol isolate mixtures reduced vascular wilt incidence and promoted plant growth”
t0“tomato”
Claim · model-written summary
The PpTS-1, CgCG-2, and ThS17TH consortium reduced Fusarium wilt incidence by 71% versus untreated controls.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- PpTS-1 + CgCG-2 + ThS17THe0
- Interactor
- Fusarium oxysporum f. sp. lycopersiciFusarium oxysporum f. sp. lycopersicie1pathogen
- Outcome
- Fusarium wilt incidencee0
- Direction
- reductione0
- Value
- 71%e0
- Comparator
- non-treated controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PpTS-1 + CgCG-2 + ThS17TH was the most effective microbial consortium, giving 71% reduction of Fusarium wilt incidence compared to non-treated controls”
e1“Fusarium oxysporum f. sp. lycopersici (Fol)”
t0“tomato”
Claim · model-written summary
Reduced wilt incidence with the consortium increased plant growth by 135%.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- PpTS-1 + CgCG-2 + ThS17THe1
- Outcome
- plant growthe0
- Direction
- increasede0
- Value
- 135%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This reduced incidence increased plant growth by 135%”
e1“PpTS-1 + CgCG-2 + ThS17TH”
t0“tomato”
Claim · model-written summary
Tomato defense gene upregulation suggests that consortium effects on wilt may partly involve plant mediation.
- Taxon
- tomatoSolanum lycopersicume0
- Gene
- allene oxide cyclasee0
- Outcome
- reduction in vascular wilte0
- Qualifier
- could be partly plant-mediatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Upregulation of genes encoding for allene oxide cyclase, pathogenesis-related proteins 3, and 5, and β-1,3-glucanase in tomato plants indicated that the reduction in vascular wilt by the consortia could be partly plant-mediated”
The same questions in other papers
biocontrol · growth · Solanum lycopersicum (tomato)Positive and negative results
27 papers in the same direction as this paper · 1 reporting no difference from an alternative
- no effect
- positive
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See all 29 papers →biocontrol · Fusarium oxysporum f. sp. lycopersici · Solanum lycopersicum (tomato)Results agree
4 papers in the same direction as this paper
- positive
- positive
- positive
1 paper more in this group
See all 5 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.