Abstract
Recently, several in vitro studies have reported antiviral activity of agents of systemic acquired resistance against plant virus infection, but the approach has not been applied in a wide range of agricultural fields. The objective of this study was to evaluate the inhibitory effect of the exogenous application of salicylic acid (SA), chitosan (CH), or eugenol (EG) in tomato yellow leaf curl virus (TYLCV) infection of greenhouse-grown tomato plants. In vitro, the initial time of symptom was observed in TYLCV-infected plants (VP) of the resistant cultivar ‘Superdotaerang’ at 12 days post inoculation (dpi) after application of antiviral agents. At 32 dpi, the disease rate of TYLCV in the CHT+VP (0.1% chitosan and virus infected control) treated plants was 87.5%, lower than that of the other treatment. However, the virus content in the CHT+VP treated plants was higher than those of the other treatments, and SA, EG, and CH did not show significant effect on plant height or shoot and root fresh weight. Our results from summer-cultivated greenhouse-grown tomatoes show that none of the tested agents had an inhibitory activity on viral infection or yield of tomato ‘Dotaerangsola’cultivar. In contrast, all treated ‘TY Giants’ cultivars that possessed TYLCV resistance genes Ty-1 and Ty-3a did not show typical symptoms and the virus content was remarkably lower than those in the TYLCV treated plants in ‘Superdotaerang’. The results of this research indicated that the planting of resistant tomato cultivars was effective method instead of using SA, EG, and CH (known as resistance-inducing factors for control) of TYLCV in the field.
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Claims 11
Claim · model-written summary
In resistant Superdotaerang, symptoms initially appeared 12 days after inoculation following antiviral agent application.
- Taxon
- Tomato
Solanum lycopersicumt0 - Material
- ‘Superdotaerang’e0
- Interactor
- TYLCVTomato yellow leaf curl viruse0pathogen
- Outcome
- initial time of symptome0
- Value
- 12 days post inoculation (dpi)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in Tomato”
e0“the initial time of symptom was observed in TYLCV-infected plants (VP) of the resistant cultivar ‘Superdotaerang’ at 12 days post inoculation (dpi) after application of antiviral agents”
Claim · model-written summary
At 32 dpi, chitosan treated infected plants had an 87.5% TYLCV disease rate, lower than other treatments.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- 0.1% chitosan and virus infected controle0
- Interactor
- TYLCVTomato yellow leaf curl viruse0pathogen
- Outcome
- disease rate of TYLCVe0
- Direction
- lowere0
- Value
- 87.5%e0
- Qualifier
- 32 dpie0
- Comparator
- other treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in Tomato”
e0“At 32 dpi, the disease rate of TYLCV in the CHT+VP (0.1% chitosan and virus infected control) treated plants was 87.5%, lower than that of the other treatment.”
Claim · model-written summary
The chitosan treated infected plants had higher virus content than other treatments.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- CHT+VPe0
- Interactor
- TYLCVTomato yellow leaf curl viruse1pathogen
- Outcome
- virus contente0
- Direction
- highere0
- Comparator
- other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in Tomato”
e0“the virus content in the CHT+VP treated plants was higher than those of the other treatments”
e1“At 32 dpi, the disease rate of TYLCV in the CHT+VP (0.1% chitosan and virus infected control) treated plants was 87.5%, lower than that of the other treatment.”
Claim · model-written summary
SA did not significantly affect plant height or shoot and root fresh weight.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- SAe0
- Outcome
- plant height or shoot and root fresh weighte0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in Tomato”
e0“SA, EG, and CH did not show significant effect on plant height or shoot and root fresh weight.”
Claim · model-written summary
EG did not significantly affect plant height or shoot and root fresh weight.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- EGe0
- Outcome
- plant height or shoot and root fresh weighte0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in Tomato”
e0“SA, EG, and CH did not show significant effect on plant height or shoot and root fresh weight.”
Claim · model-written summary
CH did not significantly affect plant height or shoot and root fresh weight.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- CHe0
- Outcome
- plant height or shoot and root fresh weighte0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in Tomato”
e0“SA, EG, and CH did not show significant effect on plant height or shoot and root fresh weight.”
Claim · model-written summary
None of the tested agents inhibited viral infection in Dotaerangsola tomato.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- ‘Dotaerangsola’e0
- Treatment
- tested agentse0
- Outcome
- viral infectione0
- Direction
- nonee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“none of the tested agents had an inhibitory activity on viral infection or yield of tomato ‘Dotaerangsola’cultivar.”
t0“in Tomato”
Claim · model-written summary
None of the tested agents inhibited yield in Dotaerangsola tomato.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- ‘Dotaerangsola’e0
- Treatment
- tested agentse0
- Outcome
- yielde0
- Direction
- nonee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“none of the tested agents had an inhibitory activity on viral infection or yield of tomato ‘Dotaerangsola’cultivar.”
t0“in Tomato”
Claim · model-written summary
Treated TY Giants cultivars with Ty-1 and Ty-3a showed no typical TYLCV symptoms.
- Taxon
- TomatoSolanum lycopersicumt0
- Material
- ‘TY Giants’e0
- Interactor
- TYLCVTomato yellow leaf curl viruse0pathogen
- Gene
- Ty-1 and Ty-3ae0
- Outcome
- did not show typical symptomse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in Tomato”
e0“all treated ‘TY Giants’ cultivars that possessed TYLCV resistance genes Ty-1 and Ty-3a did not show typical symptoms and the virus content was remarkably lower than those in the TYLCV treated plants in ‘Superdotaerang’.”
Claim · model-written summary
TY Giants cultivars had remarkably lower virus content than TYLCV treated Superdotaerang plants.
- Taxon
- TomatoSolanum lycopersicumt0
- Material
- ‘TY Giants’e0
- Interactor
- TYLCVTomato yellow leaf curl viruse0pathogen
- Gene
- Ty-1 and Ty-3ae0
- Outcome
- virus contente0
- Direction
- lowere0
- Comparator
- ‘Superdotaerang’e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in Tomato”
e0“all treated ‘TY Giants’ cultivars that possessed TYLCV resistance genes Ty-1 and Ty-3a did not show typical symptoms and the virus content was remarkably lower than those in the TYLCV treated plants in ‘Superdotaerang’.”
Claim · model-written summary
The authors recommend planting resistant tomato cultivars to control TYLCV.
- Taxon
- tomatoSolanum lycopersicume0
- Interactor
- TYLCVTomato yellow leaf curl viruse0pathogen
- Outcome
- planting of resistant tomato cultivarse0
- Setting
- fielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the planting of resistant tomato cultivars was effective method instead of using SA, EG, and CH (known as resistance-inducing factors for control) of TYLCV in the field”
The same questions in other papers
chitosan · growth · Solanum lycopersicum (tomato)Results differ
2 papers in the same direction as this paper · 39 in the opposite direction
- positive
- positive
- positive
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See all 42 papers →salicylic acid · growth · Solanum lycopersicum (tomato)Results differ
2 papers in the same direction as this paper · 58 in the opposite direction
- positive
- positive
- positive
57 papers more in this group
See all 61 papers →eugenol · growth · Solanum lycopersicum (tomato)Positive and negative results
3 in the opposite direction
- positive
- positive
- positive
infection · Tomato yellow leaf curl virus · Solanum lycopersicum (tomato)Positive and negative results
6 papers in the same direction as this paper · 18 in the opposite direction
- negative
- negative
- positive
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.