Abstract
The chemical elicitor acibenzolar-S-methyl (ASM; Actigard 50 WG), which induces systemic acquired resistance (SAR), was investigated to determine the effect on bacterial wilt of tomato caused by Ralstonia solanacearum on moderately resistant cultivars under greenhouse and field conditions. In greenhouse experiments, ASM was applied as foliar spray and/or soil drench (3 μg/ml) before and as foliar spray (30 μg/ml) after transplanting. The chemical elicitor was ineffective in reducing bacterial wilt incidence on susceptible tomato cultivars Equinox and FL 47 when plants were inoculated with R. solanacearum. However, greenhouse studies indicated that ASM significantly enhanced resistance in cultivars with moderate resistance to bacterial wilt such as Neptune and BHN 466. It appeared that ASM-mediated resistance was partially due to prevention of internal spread of R. solanacearum toward upper stem tissues of tomato plants. The effect of ASM on moderately resistant cultivars was consistent in field experiments conducted in 2002 and 2003 in Quincy, FL, where bacterial wilt incidence was significantly reduced in ASM-treated BHN 466 (in 2002), FL 7514 (in 2003), and Neptune (both years) plants. ASM-treated BHN 466 and FL 7514 produced significantly higher tomato yield than the untreated controls. This is the first report of ASM-mediated control of bacterial wilt under field conditions, which suggests that use of this treatment for moderately resistant genotypes may be effective for control of bacterial wilt of tomato.
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Claims 9
Claim · model-written summary
ASM did not reduce bacterial wilt incidence in susceptible Equinox and FL 47 after inoculation.
- Taxon
- tomato
Solanum lycopersicume0 - Material
- Equinox and FL 47e0
- Treatment
- chemical elicitore0
- Interactor
- Ralstonia solanacearum
Ralstonia solanacearume1pathogen - Outcome
- bacterial wilt incidencee0
- Direction
- ineffective in reducinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The chemical elicitor was ineffective in reducing bacterial wilt incidence on susceptible tomato cultivars Equinox and FL 47 when plants were inoculated with R. solanacearum.”
e1“caused by Ralstonia solanacearum”
Claim · model-written summary
ASM significantly enhanced bacterial wilt resistance in moderately resistant Neptune and BHN 466.
- Taxon
- TomatoSolanum lycopersicumt0
- Material
- Neptune and BHN 466e0
- Treatment
- ASMe0
- Interactor
- Ralstonia solanacearumRalstonia solanacearumt0pathogen
- Outcome
- resistancee0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ASM significantly enhanced resistance in cultivars with moderate resistance to bacterial wilt such as Neptune and BHN 466.”
t0“Tomato Against Ralstonia solanacearum”
Claim · model-written summary
ASM appeared to prevent internal spread of R. solanacearum into upper tomato stems.
- Taxon
- tomatoSolanum lycopersicume0
- Organ / stage
- upper stem tissuese0
- Treatment
- ASMe0
- Interactor
- R. solanacearumRalstonia solanacearume0pathogen
- Outcome
- prevention of internal spread of R. solanacearume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ASM-mediated resistance was partially due to prevention of internal spread of R. solanacearum toward upper stem tissues of tomato plants.”
Claim · model-written summary
In field trials, ASM significantly reduced bacterial wilt incidence in BHN 466 in 2002.
- Taxon
- TomatoSolanum lycopersicumt0
- Material
- BHN 466e0
- Treatment
- ASM-treatede0
- Interactor
- Ralstonia solanacearumRalstonia solanacearumt0pathogen
- Outcome
- bacterial wilt incidencee0
- Direction
- reducede0
- Qualifier
- in 2002e0
- Setting
- Quincy, FLe1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“bacterial wilt incidence was significantly reduced in ASM-treated BHN 466 (in 2002), FL 7514 (in 2003), and Neptune (both years) plants.”
e1“field experiments conducted in 2002 and 2003 in Quincy, FL”
t0“Tomato Against Ralstonia solanacearum”
Claim · model-written summary
In field trials, ASM significantly reduced bacterial wilt incidence in FL 7514 in 2003.
- Taxon
- TomatoSolanum lycopersicumt0
- Material
- FL 7514e0
- Treatment
- ASM-treatede0
- Interactor
- Ralstonia solanacearumRalstonia solanacearumt0pathogen
- Outcome
- bacterial wilt incidencee0
- Direction
- reducede0
- Qualifier
- in 2003e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“bacterial wilt incidence was significantly reduced in ASM-treated BHN 466 (in 2002), FL 7514 (in 2003), and Neptune (both years) plants.”
t0“Tomato Against Ralstonia solanacearum”
Claim · model-written summary
In field trials, ASM significantly reduced bacterial wilt incidence in Neptune in both years.
- Taxon
- TomatoSolanum lycopersicumt0
- Material
- Neptunee0
- Treatment
- ASM-treatede0
- Interactor
- Ralstonia solanacearumRalstonia solanacearumt0pathogen
- Outcome
- bacterial wilt incidencee0
- Direction
- reducede0
- Qualifier
- both yearse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“bacterial wilt incidence was significantly reduced in ASM-treated BHN 466 (in 2002), FL 7514 (in 2003), and Neptune (both years) plants.”
t0“Tomato Against Ralstonia solanacearum”
Claim · model-written summary
ASM-treated BHN 466 yielded significantly more tomato than untreated controls.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- BHN 466e0
- Treatment
- ASM-treatede0
- Outcome
- tomato yielde0
- Direction
- highere0
- Comparator
- untreated controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ASM-treated BHN 466 and FL 7514 produced significantly higher tomato yield than the untreated controls.”
Claim · model-written summary
ASM-treated FL 7514 yielded significantly more tomato than untreated controls.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- FL 7514e0
- Treatment
- ASM-treatede0
- Outcome
- tomato yielde0
- Direction
- highere0
- Comparator
- untreated controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ASM-treated BHN 466 and FL 7514 produced significantly higher tomato yield than the untreated controls.”
Claim · model-written summary
The authors suggest ASM for bacterial wilt control in moderately resistant tomato genotypes.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- this treatmente0
- Outcome
- control of bacterial wilte0
- Qualifier
- moderately resistant genotypese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“use of this treatment for moderately resistant genotypes may be effective for control of bacterial wilt of tomato.”
The same questions in other papers
acibenzolar-S-methyl · yield · Solanum lycopersicum (tomato)Results differ
5 papers in the same direction as this paper · 2 in the opposite direction · 2 reporting no difference from an alternative
- no effect
- positive
- positive
6 papers more in this group
See all 10 papers →acibenzolar-S-methyl · Ralstonia solanacearum · Solanum lycopersicum (tomato)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
resistance inducer · Ralstonia solanacearum · Solanum lycopersicum (tomato)Positive and negative results
3 in the opposite direction
- positive
- 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.