Abstract
One of the properties of systemic acquired resistance in plants is its concomitance with the biochemical changes including enhancement of activities of defense-related enzymes. In this study, the effects of Acibenzolar-S-methyl (ACI) on the some of defense responses of the cucumber plants (healthy or inoculated with spore suspension of Podosphaerafusca, the causal agent of cucumber powdery mildew) were surveyed via in vivo tests. Changes of defense responses in ACI-treated cucumber plants, inoculated with pathogen or not, were studied and compared with those of non-treated control plants. Results indicated that specific activity of peroxidase increased significantly in treated plants. Increase in enzyme activity was higher in pathogen-inoculated than non-inoculated plants, thus pathogen attack stress to plant plays a role in enhancement of enzyme activity. Specific activity of phenylalanine ammonialyase showed no changes in ACI-treated non-inoculated plants, but in inoculated plants it Increased due to interaction between ACI treatment and pathogen attack stress. Specific activity of chitinase increased in both inoculated and non-inoculated ACI-treated plants at 24 hours after treatment onwards, and pathogen attack stress did not affect it. Phenolic content of ACI-treated plant tissues, despite of small fluctuations, did not show any definite pattern of changes.
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Claims 7
Claim · model-written summary
ACI significantly increased peroxidase specific activity in cucumber.
- Taxon
- cucumber
Cucumis sativust0 - Treatment
- Acibenzolar-S-methyl (ACI)e1
- Outcome
- specific activity of peroxidasee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results indicated that specific activity of peroxidase increased significantly in treated plants.”
e1“the effects of Acibenzolar-S-methyl (ACI) on the some of defense responses of the cucumber plants”
t0“cucumber-powdery mildew interaction”
Claim · model-written summary
Peroxidase activity increased more in inoculated than non-inoculated cucumber plants.
- Taxon
- cucumberCucumis sativust0
- Treatment
- pathogen-inoculatede0
- Interactor
- Podosphaerafuscae2pathogen
- Outcome
- enzyme activitye0
- Direction
- highere0
- Comparator
- non-inoculated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increase in enzyme activity was higher in pathogen-inoculated than non-inoculated plants”
e1“specific activity of peroxidase increased significantly in treated plants.”
e2“Podosphaerafusca, the causal agent of cucumber powdery mildew”
t0“cucumber-powdery mildew interaction”
Claim · model-written summary
ACI did not change phenylalanine ammonialyase activity in non-inoculated cucumber plants.
- Taxon
- cucumberCucumis sativust0
- Treatment
- ACI-treatede0
- Outcome
- Specific activity of phenylalanine ammonialyasee0
- Direction
- no changese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Specific activity of phenylalanine ammonialyase showed no changes in ACI-treated non-inoculated plants”
t0“cucumber-powdery mildew interaction”
Claim · model-written summary
Phenylalanine ammonialyase activity increased in inoculated cucumber plants with ACI.
- Taxon
- cucumberCucumis sativust0
- Treatment
- ACI treatmente0
- Interactor
- Podosphaerafuscae2pathogen
- Outcome
- Specific activity of phenylalanine ammonialyasee1
- Direction
- Increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but in inoculated plants it Increased due to interaction between ACI treatment and pathogen attack stress.”
e1“Specific activity of phenylalanine ammonialyase showed no changes in ACI-treated non-inoculated plants”
e2“Podosphaerafusca, the causal agent of cucumber powdery mildew”
t0“cucumber-powdery mildew interaction”
Claim · model-written summary
Chitinase activity increased after ACI in inoculated and non-inoculated cucumber plants from 24 hours onward.
- Taxon
- cucumberCucumis sativust0
- Treatment
- ACI-treatede0
- Outcome
- Specific activity of chitinasee0
- Direction
- increasede0
- Qualifier
- at 24 hours after treatment onwardse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Specific activity of chitinase increased in both inoculated and non-inoculated ACI-treated plants at 24 hours after treatment onwards”
t0“cucumber-powdery mildew interaction”
Claim · model-written summary
Pathogen attack did not affect chitinase activity in ACI-treated cucumber plants.
- Taxon
- cucumberCucumis sativust0
- Treatment
- pathogen attack stresse0
- Interactor
- Podosphaerafuscae2pathogen
- Outcome
- Specific activity of chitinasee1
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pathogen attack stress did not affect it.”
e1“Specific activity of chitinase increased in both inoculated and non-inoculated ACI-treated plants”
e2“Podosphaerafusca, the causal agent of cucumber powdery mildew”
t0“cucumber-powdery mildew interaction”
Claim · model-written summary
Phenolic content in ACI-treated cucumber tissue had no definite pattern of change.
- Taxon
- cucumberCucumis sativust0
- Treatment
- ACI-treatede0
- Outcome
- Phenolic contente0
- Direction
- did not show any definite pattern of changese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phenolic content of ACI-treated plant tissues, despite of small fluctuations, did not show any definite pattern of changes.”
t0“cucumber-powdery mildew interaction”
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See all 7 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.