Abstract
In nature plants can be induced systemically to become more resistant to diseases through some biotic or abiotic inducers. One of the commonly used chemicals inducers is salicylic acid (SA), which appears to mimic the systemic effects of localized infection. The potential of some chemical inducers of systemic acquired resistance (SAR) to reduce Alternaria leaf spot disease on tomato was assessed in glasshouse trials. Possible effects of using SA and some of its 5position derivatives including, 5-chlorosalicylic acid, 5-methoxy salicylic acid, 5aminosalicylic acid, 5-fluorosalicylic acid, 5-methylsalicylic acid and 5-nitrosalicylic acid in host resistance induction have been investigated. Foliar applications of salicylate derivatives with concentrations of 400 µM have been tested for disease resistant induction. Among the selected mono-substituted salicylate derivatives that have been tested, applications of SA and 5methoxysalicylic acid have induced disease resistance significantly as well as increasing the SA accumulation in plant tissues, compared with not treated control plants. Treatments such as 5chlorosalicylic acid and 5-nitrosalicylic acid had a deleterious effect on SA accumulation in plant tissues as well as in disease resistance induction. The analysis results obtained by high performance thin layer chromatography (HPTLC) indicated a high correlation between the accumulation of endogenous level of free SA content in treated plants and the reduction of Alternariosis symptoms on tomato plant. The results indicated that, among the salicylate derivatives, the biochemical activators containing electron donating groups are more suitable for inducing disease resistance in tomato crop.
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Claims 10
Claim · model-written summary
SA induced significant disease resistance relative to untreated tomato.
- Taxon
- tomato
Solanum lycopersicume1 - Treatment
- SAe0
- Outcome
- disease resistancee0
- Direction
- inducede0
- Comparator
- not treated control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“applications of SA and 5methoxysalicylic acid have induced disease resistance significantly as well as increasing the SA accumulation in plant tissues, compared with not treated control plants.”
e1“on tomato plant.”
Claim · model-written summary
5methoxysalicylic acid induced significant disease resistance relative to untreated tomato.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- 5methoxysalicylic acide0
- Outcome
- disease resistancee0
- Direction
- inducede0
- Comparator
- not treated control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“applications of SA and 5methoxysalicylic acid have induced disease resistance significantly as well as increasing the SA accumulation in plant tissues, compared with not treated control plants.”
e1“on tomato plant.”
Claim · model-written summary
SA treatment increased tissue SA accumulation.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- SAe0
- Outcome
- SA accumulation in plant tissuese0
- Direction
- increasinge0
- Comparator
- not treated control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“applications of SA and 5methoxysalicylic acid have induced disease resistance significantly as well as increasing the SA accumulation in plant tissues, compared with not treated control plants.”
e1“on tomato plant.”
Claim · model-written summary
5methoxysalicylic acid treatment increased tissue SA accumulation.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- 5methoxysalicylic acide0
- Outcome
- SA accumulation in plant tissuese0
- Direction
- increasinge0
- Comparator
- not treated control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“applications of SA and 5methoxysalicylic acid have induced disease resistance significantly as well as increasing the SA accumulation in plant tissues, compared with not treated control plants.”
e1“on tomato plant.”
Claim · model-written summary
5chlorosalicylic acid adversely affected SA accumulation.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- 5chlorosalicylic acide0
- Outcome
- SA accumulation in plant tissuese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatments such as 5chlorosalicylic acid and 5-nitrosalicylic acid had a deleterious effect on SA accumulation in plant tissues as well as in disease resistance induction.”
e1“on tomato plant.”
Claim · model-written summary
5-nitrosalicylic acid adversely affected SA accumulation.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- 5-nitrosalicylic acide0
- Outcome
- SA accumulation in plant tissuese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatments such as 5chlorosalicylic acid and 5-nitrosalicylic acid had a deleterious effect on SA accumulation in plant tissues as well as in disease resistance induction.”
e1“on tomato plant.”
Claim · model-written summary
5chlorosalicylic acid adversely affected disease resistance induction.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- 5chlorosalicylic acide0
- Outcome
- disease resistance inductione0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatments such as 5chlorosalicylic acid and 5-nitrosalicylic acid had a deleterious effect on SA accumulation in plant tissues as well as in disease resistance induction.”
e1“on tomato plant.”
Claim · model-written summary
5-nitrosalicylic acid adversely affected disease resistance induction.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- 5-nitrosalicylic acide0
- Outcome
- disease resistance inductione0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatments such as 5chlorosalicylic acid and 5-nitrosalicylic acid had a deleterious effect on SA accumulation in plant tissues as well as in disease resistance induction.”
e1“on tomato plant.”
Claim · model-written summary
Free endogenous SA and Alternariosis symptom reduction were highly correlated in treated tomato.
- Taxon
- tomatoSolanum lycopersicume0
- Compound
- free SAe0
- Outcome
- reduction of Alternariosis symptomse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a high correlation between the accumulation of endogenous level of free SA content in treated plants and the reduction of Alternariosis symptoms on tomato plant.”
Claim · model-written summary
Electron donating salicylate derivatives were judged more suitable for inducing tomato disease resistance.
- Taxon
- tomatoSolanum lycopersicume0
- Outcome
- more suitable for inducing disease resistancee0
- Qualifier
- containing electron donating groupse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the biochemical activators containing electron donating groups are more suitable for inducing disease resistance in tomato crop.”
The same questions in other papers
salicylic acid · disease · Solanum lycopersicum (tomato)Positive and negative results
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- negative
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See all 39 papers →salicylic acid · physiology: hormones · Solanum lycopersicum (tomato)Results agree
5 papers in the same direction as this paper
- positive
- positive
- positive
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See all 6 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.