Abstract
The ability of plant pathogens to rapidly develop resistance to commonly used pesticides challenges efforts to maximize crop production. Fungal biocontrol agents have become an important alternative to chemical fungicides as a result of environmental concerns regarding conventional pesticides, including resistance issues. The complex mode of action of biocontrol agents reduces the likelihood that pathogens will develop resistance to them. We recently isolated a unique, biologically active isolate of the epiphytic fungus Pseudozyma aphidis. We show that the extracellular metabolites secreted by our P. aphidis isolate can inhibit Xanthomonas campestris pv. vesicatoria, X. campestris pv. campestris, Pseudomonas syringae pv. tomato, Erwinia amylovora, Clavibacter michiganensis, and Agrobacterium tumefaciens in vitro. Moreover, application of Pseudozyma aphidis spores on tomato plants in the greenhouse significantly reduced (by 60%) the incidence of bacterial wilt and canker disease caused by C. michiganensis subsp. michiganensis on those plants as well as disease severity by 35%. Furthermore, infected plants treated with P. aphidis were 25% taller than control infected plants. We found that P. aphidis activates PR1a-and other pathogenesis-related genes in tomato plants-and can trigger an induced-resistance response against C. michiganensis that proceeds in a salicylic-acid-independent manner, as shown using NahG-transgenic tomato plants.
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Claims 6
Claim · model-written summary
Extracellular metabolites secreted by the P. aphidis isolate inhibited Xanthomonas campestris pv. vesicatoria (and other bacteria) in vitro.
- Treatment
- extracellular metabolites secreted by our P. aphidis isolatee0
- Interactor
- Xanthomonas campestris pv. vesicatoria
_(25868012152).jpg?width=60)
Xanthomonas campestrise0pathogen - Second interactor
- P. aphidisMoesziomyces aphidise0biocontrol_agent
- Outcome
- inhibite0
- Direction
- inhibite0
- Setting
- in vitroe1
Not reportedTaxonComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_(25868012152).jpg?width=500)
Verbatim
e0“extracellular metabolites secreted by our P. aphidis isolate can inhibit Xanthomonas campestris pv. vesicatoria”
e1“in vitro”
Claim · model-written summary
Application of Pseudozyma aphidis spores on tomato plants in the greenhouse significantly reduced the incidence of bacterial wilt and canker disease caused by C. michiganensis subsp. michiganensis by 60%.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- application of Pseudozyma aphidis sporese0
- Interactor
- C. michiganensis subsp. michiganensis
Clavibacter michiganensis subsp. michiganensise0pathogen - Second interactor
- Pseudozyma aphidisMoesziomyces aphidise0biocontrol_agent
- Outcome
- incidence of bacterial wilt and canker diseasee0
- Direction
- reducede0
- Value
- 60%e0
- Setting
- greenhousee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of Pseudozyma aphidis spores on tomato plants in the greenhouse significantly reduced (by 60%) the incidence of bacterial wilt and canker disease caused by C. michiganensis subsp. michiganensis”
Claim · model-written summary
Application of Pseudozyma aphidis spores on tomato plants in the greenhouse reduced disease severity caused by C. michiganensis subsp. michiganensis by 35%.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- application of Pseudozyma aphidis sporese0
- Interactor
- C. michiganensis subsp. michiganensisClavibacter michiganensis subsp. michiganensise0pathogen
- Second interactor
- Pseudozyma aphidisMoesziomyces aphidise0biocontrol_agent
- Outcome
- disease severitye0
- Direction
- reducede0
- Value
- 35%e0
- Setting
- greenhousee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of Pseudozyma aphidis spores on tomato plants in the greenhouse significantly reduced (by 60%) the incidence of bacterial wilt and canker disease caused by C. michiganensis subsp. michiganensis on those plants as well as disease severity by 35%”
Claim · model-written summary
Infected tomato plants treated with P. aphidis were 25% taller than control infected plants.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- P. aphidise0
- Outcome
- tallere0
- Direction
- tallere0
- Value
- 25%e0
- Comparator
- control infected plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato Plants”
e0“infected plants treated with P. aphidis were 25% taller than control infected plants”
Claim · model-written summary
P. aphidis activates PR1a and other pathogenesis-related genes in tomato plants.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- P. aphidise0
- Outcome
- PR1a-and other pathogenesis-related genese0
- Direction
- activatese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P. aphidis activates PR1a-and other pathogenesis-related genes in tomato plants”
Claim · model-written summary
P. aphidis can trigger an induced-resistance response in tomato against C. michiganensis that proceeds in a salicylic-acid-independent manner, as shown with NahG-transgenic tomato plants.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- NahG-transgenic tomato plantse0
- Interactor
- C. michiganensisClavibacter michiganensise0pathogen
- Outcome
- induced-resistance responsee0
- Qualifier
- salicylic-acid-independent mannere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“can trigger an induced-resistance response against C. michiganensis that proceeds in a salicylic-acid-independent manner, as shown using NahG-transgenic tomato plants”
The same questions in other papers
Moesziomyces aphidis · molecular: expression · Solanum lycopersicum (tomato)Results agree
1 paper in the same direction as this paper
- positive
Moesziomyces aphidis · growth · Solanum lycopersicum (tomato)Results agree
2 papers in the same direction as this paper
- positive
- positive
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.