Abstract
Spraying cucumber leaves with salicylic acid (SA), 7-methoxycarbonyl benzo-1, 2, 3thiadiazol and 2-chlorethylphosphate (ethephon) (abiotic inducers) reduced the diseased area caused by Pseudoperonospora cubensis by more than 50% in the sprayed first leaves and also in the upper second leaves provided challenge inoculation was made 3 to 6 days but not one to 24hr after treatment.Localized infection of cotyledons with P. cubensis (biotic inducer) also reduced the diseased area caused by the same pathogen by more than 50% in the upper leaves challenge-inoculated 6 days after inducer inoculation.Plants acquired systemic resistance when inoculated cotyledons remained attached for at least 3 days after inoculation.Protection by both abiotic and biotic inducers was more prom -inent in the second leaves which expanded after induction than in the first leaves which expanded before induction.The present results show that systemic resistance induced in cucumber plants by either biotic or abiotic inducers was effective in controlling infection by P. cubensis whose cell walls contain no chitin.Electrophoretic analysis of extracted proteins on polyacrylamide gel showed that both the SA treatment and localized infection with P. cubensis induced several novel acid soluble proteins in the treated and the upper untreated leaves in correlation with induced resistance.
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Claims 5
Claim · model-written summary
Spraying cucumber leaves with salicylic acid, benzothiadiazole and ethephon reduced the diseased area caused by Pseudoperonospora cubensis by more than 50% in sprayed first leaves and upper second leaves when challenge inoculation was 3 to 6 days but not 1 to 24 h after treatment.
- Taxon
- cucumber
Cucumis sativuse1 - Treatment
- salicylic acid (SA), 7-methoxycarbonyl benzo-1, 2, 3thiadiazol and 2-chlorethylphosphate (ethephon)e1
- Interactor
- Pseudoperonospora cubensis
Pseudoperonospora cubensise1pathogen - Outcome
- diseased areae1
- Direction
- reducede1
- Value
- more than 50%e1
- Qualifier
- challenge inoculation was made 3 to 6 days but not one to 24hr after treatmente2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Spraying cucumber leaves with salicylic acid (SA), 7-methoxycarbonyl benzo-1, 2, 3thiadiazol and 2-chlorethylphosphate (ethephon) (abiotic inducers) reduced the diseased area caused by Pseudoperonospora cubensis by more than 50% in the sprayed first leaves and also in the upper second leaves”
e2“provided challenge inoculation was made 3 to 6 days but not one to 24hr after treatment”
Claim · model-written summary
Localized infection of cotyledons with P. cubensis reduced the diseased area caused by the same pathogen by more than 50% in upper leaves challenge-inoculated 6 days later.
- Taxon
- cucumberCucumis sativust0
- Treatment
- Localized infection of cotyledons with P. cubensise1
- Interactor
- P. cubensisPseudoperonospora cubensise1pathogen
- Outcome
- diseased areae1
- Direction
- reducede1
- Value
- more than 50%e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Localized infection of cotyledons with P. cubensis (biotic inducer) also reduced the diseased area caused by the same pathogen by more than 50% in the upper leaves challenge-inoculated 6 days after inducer inoculation”
t0“Cucumber”
Claim · model-written summary
Cucumber plants acquired systemic resistance when inoculated cotyledons remained attached for at least 3 days after inoculation.
- Taxon
- cucumberCucumis sativust0
- Outcome
- systemic resistancee1
- Qualifier
- inoculated cotyledons remained attached for at least 3 days after inoculatione1
Not reportedTreatmentComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Plants acquired systemic resistance when inoculated cotyledons remained attached for at least 3 days after inoculation”
t0“Cucumber”
Claim · model-written summary
Protection by both abiotic and biotic inducers was more prominent in second leaves, expanded after induction, than in first leaves, expanded before induction.
- Taxon
- cucumberCucumis sativust0
- Organ / stage
- second leaves which expanded after inductione1
- Outcome
- Protectione1
- Direction
- more prom -inente1
- Comparator
- first leaves which expanded before inductione1
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Protection by both abiotic and biotic inducers was more prom -inent in the second leaves which expanded after induction than in the first leaves which expanded before induction”
t0“Cucumber”
Claim · model-written summary
Both SA treatment and localized infection with P. cubensis induced several novel acid soluble proteins in treated and upper untreated cucumber leaves, correlated with induced resistance.
- Taxon
- cucumberCucumis sativust0
- Organ / stage
- treated and the upper untreated leavese1
- Treatment
- SA treatment and localized infection with P. cubensise1
- Interactor
- P. cubensisPseudoperonospora cubensise1pathogen
- Outcome
- several novel acid soluble proteinse1
- Direction
- inducede1
- Qualifier
- in correlation with induced resistancee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“both the SA treatment and localized infection with P. cubensis induced several novel acid soluble proteins in the treated and the upper untreated leaves in correlation with induced resistance”
t0“Cucumber”
The same questions in other papers
salicylic acid · physiology: osmolytes · Cucumis sativus (cucumber)Results differ
11 papers in the same direction as this paper
- positive
- positive
- positive
8 papers more in this group
See all 12 papers →salicylic acid · Pseudoperonospora cubensis · Cucumis sativus (cucumber)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- negative
- 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.