Abstract
Glycoprotein nonspecific elicitor (NSE) and a specific elicitor preparation from intercellular fluids (SE) of tomato (Lycopersicon esculentum Mill. cv Bonny Best or Potentate) infected with race 2.4.5 of Cladosporium fulvum Cooke [syn. Fulvia fulva (Cooke) Ciferri] were injected into cv Sonatine (resistant to race 2.4.5) to compare electrolyte leakage, lipoxygenase activity, and lipid peroxidation induced in response to these elicitors. Increased electrolyte leakage was induced by NSE or SE; the leakage due to NSE but not to SE was inhibited by the nonsteroidal antiinflammatory drug (NSAID) piroxicam. Under normal photoperiod conditions, higher levels of lipoxygenase activity were detected 6 hours after injection with either elicitor. This activity peaked by 12 hours with both elicitors and declined to control levels by 24 hours when visible necrosis could be detected. Both NSE and SE-induced lipoxygenase was inhibited by piroxicam in vitro. Lipid peroxidation in elicitor-treated tissue was also assayed at 6, 12, and 24 hours after injection using the TBA test for malonaldehyde. Increased peroxidation was detected in response to NSE or SE at 12 hours with similar values obtained at 24 hours. With plants incubated in the dark, lipoxygenase, and lipid peroxidation were similarly induced in SE-injected tissue whereas necrosis induction by SE was light dependent.
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Claims 8
Claim · model-written summary
Both elicitors increased electrolyte leakage.
- Taxon
- tomato
Solanum lycopersicumt0 - Treatment
- NSE or SEe0
- Outcome
- electrolyte leakagee0
- Direction
- Increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased electrolyte leakage was induced by NSE or SE”
t0“Tomato”
Claim · model-written summary
Piroxicam inhibited leakage induced by NSE but not SE.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- piroxicame0
- Outcome
- leakage due to NSEe0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the leakage due to NSE but not to SE was inhibited by the nonsteroidal antiinflammatory drug (NSAID) piroxicam”
t0“Tomato”
Claim · model-written summary
Either elicitor increased lipoxygenase activity at six hours.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- either elicitore0
- Outcome
- lipoxygenase activitye0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“higher levels of lipoxygenase activity were detected 6 hours after injection with either elicitor”
t0“Tomato”
Claim · model-written summary
Lipoxygenase activity peaked at twelve hours and declined to controls at 24 hours.
- Taxon
- tomatoSolanum lycopersicumt0
- Outcome
- This activitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This activity peaked by 12 hours with both elicitors and declined to control levels by 24 hours”
t0“Tomato”
Claim · model-written summary
Piroxicam inhibited lipoxygenase induced by both elicitors.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- piroxicame0
- Outcome
- NSE and SE-induced lipoxygenasee0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both NSE and SE-induced lipoxygenase was inhibited by piroxicam in vitro”
t0“Tomato”
Claim · model-written summary
Either elicitor increased lipid peroxidation at twelve hours.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- NSE or SEe0
- Outcome
- peroxidatione0
- Direction
- Increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased peroxidation was detected in response to NSE or SE at 12 hours with similar values obtained at 24 hours”
t0“Tomato”
Claim · model-written summary
In darkness SE still induced lipoxygenase and lipid peroxidation.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- SE-injectede0
- Outcome
- lipoxygenase, and lipid peroxidatione0
- Direction
- inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With plants incubated in the dark, lipoxygenase, and lipid peroxidation were similarly induced in SE-injected tissue”
t0“Tomato”
Claim · model-written summary
SE induced necrosis only with light.
- Taxon
- tomatoSolanum lycopersicumt0
- Outcome
- necrosis inductione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“necrosis induction by SE was light dependent”
t0“Tomato”
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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.