Abstract
The changes in amino acid and amine contents of susceptible and resistant tomat cultivars infected with Alternaria alternata tomato pathotype or treated with its host-selecti AL-toxin were investigated. AL-toxin has been known as a potential inhibitor of aspartat carbamoyltransferase (ACTase) in susceptible tomato plants. Inhibition of ACTase shoul result in the accumulation of aspartic acid in the susceptible plant treated with AL-toxi In this study, however, no difference was observed in the amount of aspartic acid and othe amino acids between toxin-treated and non-treated leaves of the susceptible and resist cultivars until at least 24hr after treatment. In the susceptible tomato plants inoculat with spores at the base of the stem, amino acid contents in leaflets showing necrotic sympt were similar to that in corresponding leaflets without symptom. Aspartic acid content in symptom-developed leaflets was rather lower than that in symptom-less ones. These resul do not support the hypothesis that AL-toxin inhibits ACTase. On the other hand, two amines, ethanolamine and phosphoethanolamine, markedly accumulated in susceptib tomato leaves 12 to 24hr after toxin treatment, but not in resistant ones. The increase in these amines was also observed in symptom-developing leaflets but not in symptomless ones of plants inoculated with the spores of the pathogen. These results suggest that AL-toxi induces disorder of metabolism related to these amines in susceptible tomato cells.
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Claims 8
Claim · model-written summary
Aspartic acid and other amino acids did not differ between toxin-treated and untreated leaves until at least 24 hours.
- Taxon
- Tomato
Solanum lycopersicumt0 - Treatment
- toxin-treatede0
- Outcome
- amount of aspartic acid and othe amino acidse0
- Direction
- no differencee0
- Qualifier
- until at least 24hr after treatmente0
- Comparator
- non-treated leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no difference was observed in the amount of aspartic acid and othe amino acids between toxin-treated and non-treated leaves of the susceptible and resist cultivars until at least 24hr after treatment.”
t0“Susceptible Tomato Cultivars”
Claim · model-written summary
After spore inoculation, amino acid contents were similar in necrotic and symptomless leaflets.
- Taxon
- TomatoSolanum lycopersicumt0
- Organ / stage
- leafletse0
- Outcome
- amino acid contentse0
- Direction
- similare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“amino acid contents in leaflets showing necrotic sympt were similar to that in corresponding leaflets without symptom.”
t0“Susceptible Tomato Cultivars”
Claim · model-written summary
Aspartic acid content was lower in symptomatic than symptomless leaflets.
- Taxon
- TomatoSolanum lycopersicumt0
- Organ / stage
- leafletse0
- Outcome
- Aspartic acid contente0
- Direction
- lowere0
- Comparator
- symptom-less onese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Aspartic acid content in symptom-developed leaflets was rather lower than that in symptom-less ones.”
t0“Susceptible Tomato Cultivars”
Claim · model-written summary
Ethanolamine accumulated in susceptible leaves 12 to 24 hours after toxin treatment but not resistant leaves.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- toxin treatmente0
- Outcome
- ethanolaminee0
- Direction
- accumulatede0
- Qualifier
- 12 to 24hre0
- Comparator
- resistant onese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two amines, ethanolamine and phosphoethanolamine, markedly accumulated in susceptib tomato leaves 12 to 24hr after toxin treatment, but not in resistant ones.”
Claim · model-written summary
Phosphoethanolamine accumulated in susceptible leaves 12 to 24 hours after toxin treatment but not resistant leaves.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- toxin treatmente0
- Outcome
- phosphoethanolaminee0
- Direction
- accumulatede0
- Qualifier
- 12 to 24hre0
- Comparator
- resistant onese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two amines, ethanolamine and phosphoethanolamine, markedly accumulated in susceptib tomato leaves 12 to 24hr after toxin treatment, but not in resistant ones.”
Claim · model-written summary
These amines increased in symptom-developing but not symptomless leaflets after pathogen inoculation.
- Taxon
- tomatoSolanum lycopersicumt0
- Organ / stage
- leafletse0
- Interactor
- Alternaria alternata tomato pathotype
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Alternaria alternatat0pathogene0 - Outcome
- these aminese0
- Direction
- increasee0
- Comparator
- symptomless onese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The increase in these amines was also observed in symptom-developing leaflets but not in symptomless ones of plants inoculated with the spores of the pathogen.”
t0“Alternaria alternata tomato pathotype”
Claim · model-written summary
The findings do not support AL-toxin inhibition of ACTase.
- Taxon
- TomatoSolanum lycopersicumt0
- Gene
- ACTasee0
- Outcome
- do not support the hypothesis that AL-toxin inhibits ACTasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These resul do not support the hypothesis that AL-toxin inhibits ACTase.”
t0“Susceptible Tomato Cultivars”
Claim · model-written summary
The authors suggest AL-toxin disrupts amine-related metabolism in susceptible tomato cells.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- AL-toxie0
- Outcome
- disorder of metabolism related to these aminese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These results suggest that AL-toxi induces disorder of metabolism related to these amines in susceptible tomato cells.”
The same questions in other papers
pathogen product · molecular: metabolites · Solanum lycopersicum (tomato)Results agree
1 paper in the same direction as this paper
- negative
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.