Abstract
Production of the phytotoxin thaxtomin A by pathogenic Streptomyces spp. is essential for induction of common scab disease in potato. The disease can be significantly reduced by a range of chemicals applied as foliar sprays before tuber initiation. We tested a range of chemicals that had previously demonstrated varying capacities to reduce common scab for both disease suppression and their ability to inhibit thaxtomin A toxicity in both 'Desiree' and 'Russet Burbank' potato. Our results for disease suppression generally supported previous studies. Our tuber slice assays with thaxtomin A showed a strong correlation between the ability of the chemical to suppress common scab symptom development and the ability of the chemical to inhibit thaxtomin A toxicity. A Bayesian measurement error linear regression model was derived for each cultivar and trial and demonstrated a clear positive relationship between disease and thaxtomin-A-induced necrosis. The relationships obtained were much stronger than would have been obtained without adjustment for measurement error. This demonstrates that disease mitigation using chemical foliar sprays is strongly correlated with the ability of the chemical to inhibit thaxtomin A toxicity, suggesting this mechanism as a key mode of action for understanding this novel disease control strategy.
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Claims 5
Claim · model-written summary
Chemical foliar sprays suppressed common scab in potato, generally supporting earlier studies.
- Taxon
- potato
Solanum tuberosumt0 - Treatment
- Foliar Chemicalst0
- Interactor
- Common Scabt0pathogen
- Outcome
- disease suppressione0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Our results for disease suppression generally supported previous studies.”
t0“Application of Foliar Chemicals to Reduce Common Scab Disease of Potato”
Claim · model-written summary
Chemical ability to suppress common scab symptoms strongly correlated with inhibition of thaxtomin A toxicity in potato tuber slices.
- Taxon
- PotatoSolanum tuberosumt0
- Organ / stage
- tuber slicee0
- Treatment
- chemicale0
- Interactor
- Common Scabt0pathogen
- Compound
- thaxtomin Ae0
- Outcome
- common scab symptom developmente0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Our tuber slice assays with thaxtomin A showed a strong correlation between the ability of the chemical to suppress common scab symptom development and the ability of the chemical to inhibit thaxtomin A toxicity.”
t0“Common Scab Disease of Potato”
Claim · model-written summary
The cultivar-specific Bayesian models showed a clear positive relationship between disease and thaxtomin-A-induced necrosis.
- Taxon
- potatoSolanum tuberosumt0
- Material
- cultivare0
- Interactor
- Common Scabt0pathogen
- Compound
- thaxtomin-Ae0
- Outcome
- disease and thaxtomin-A-induced necrosise0
- Direction
- positive relationshipe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A Bayesian measurement error linear regression model was derived for each cultivar and trial and demonstrated a clear positive relationship between disease and thaxtomin-A-induced necrosis.”
t0“Common Scab Disease of Potato”
Claim · model-written summary
Adjusting for measurement error strengthened the estimated relationships.
- Taxon
- potatoSolanum tuberosumt0
- Outcome
- relationshipse0
- Direction
- much strongere0
- Comparator
- without adjustment for measurement errore0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The relationships obtained were much stronger than would have been obtained without adjustment for measurement error.”
t0“Common Scab Disease of Potato”
Claim · model-written summary
The correlation suggests inhibition of thaxtomin A toxicity as a key mode of action for foliar chemical disease mitigation.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- chemical foliar sprayse0
- Compound
- thaxtomin Ae0
- Outcome
- disease mitigatione0
- Qualifier
- suggesting this mechanisme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This demonstrates that disease mitigation using chemical foliar sprays is strongly correlated with the ability of the chemical to inhibit thaxtomin A toxicity, suggesting this mechanism as a key mode of action for understanding this novel disease control strategy.”
t0“Common Scab Disease of Potato”
The same questions in other papers
application · control · Solanum tuberosum (potato)Positive and negative results
18 papers in the same direction as this paper · 6 in the opposite direction
- negative
- no effect
- no effect
21 papers more in this group
See all 25 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.