Abstract
Tomato plants are susceptible to Ralstonia solanacearum, a pathogen responsible for bacterial wilt, a severe soil-borne disease with no available cure. Warburgia ugandensis crude extract has shown biocontrol capabilities against pathogenic fungi and bacteria in animals, but data on its effectiveness in plants is limited. The current study was done to evaluate the in vivo efficacy of W. ugandensis crude extracts against R. solanacearum in tomato plants. W. ugandensis leaf and stem bark crude extracts were obtained using ethanol, methanol, hexane, and dichloromethane. The obtained crude extracts were tested against R. solanacearum in tomato at the greenhouse in triplicate. The data collected on bacterial wilt incidence, severity, stem diameter, height, and the number of branches and fruits set were analyzed using analysis of variance (ANOVA) at a 5% significance level. Tukey’s test was employed to determine significant differences between means at the same significance level. Tomato plants established in soil inoculated with R. solanacearum and treated with dichloromethane crude extract of W. ugandensis stem bark showed no sign of bacterial wilt disease and were comparable to the positive control. Tomato plants established in soil inoculated with R. solanacearum but treated with W. ugandensis leaf ethanol crude extract had the highest average height of 62.50 cm which was similar to positive control. Tomato plants grown in R. solanacearum-inoculated soils and treated with methanol crude extracts from W. ugandensis stem bark produced a significantly higher average number of fruits, 22.00, compared to those treated with crude extracts from other solvents. The study proposed that W. ugandensis crude extract has the ability to be used as antibacterial biocontrol against R. solanacearum. Further research is important to determine the bioactive compounds against R. solanacearum.
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Claims 4
Claim · model-written summary
Dichloromethane stem bark extract prevented visible wilt in inoculated tomatoes, comparable to positive control.
- Taxon
- Tomato
Solanum lycopersicume0 - Treatment
- dichloromethane crude extract of W. ugandensis stem barke0
- Interactor
- R. solanacearum
Ralstonia solanacearume0pathogen - Outcome
- no sign of bacterial wilt diseasee0
- Comparator
- positive controle0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tomato plants established in soil inoculated with R. solanacearum and treated with dichloromethane crude extract of W. ugandensis stem bark showed no sign of bacterial wilt disease and were comparable to the positive control.”
Claim · model-written summary
Leaf ethanol extract gave the highest average tomato height, 62.50 cm, similar to positive control.
- Taxon
- TomatoSolanum lycopersicume0
- Treatment
- W. ugandensis leaf ethanol crude extracte0
- Interactor
- R. solanacearumRalstonia solanacearume0pathogen
- Outcome
- average heighte0
- Direction
- higheste0
- Value
- 62.50 cme0
- Comparator
- positive controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tomato plants established in soil inoculated with R. solanacearum but treated with W. ugandensis leaf ethanol crude extract had the highest average height of 62.50 cm which was similar to positive control.”
Claim · model-written summary
Methanol stem bark extract gave significantly more tomato fruits than extracts from other solvents, averaging 22.00.
- Taxon
- TomatoSolanum lycopersicume0
- Treatment
- methanol crude extracts from W. ugandensis stem barke0
- Interactor
- R. solanacearumRalstonia solanacearume0pathogen
- Outcome
- average number of fruitse0
- Direction
- highere0
- Value
- 22.00e0
- Comparator
- crude extracts from other solventse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tomato plants grown in R. solanacearum-inoculated soils and treated with methanol crude extracts from W. ugandensis stem bark produced a significantly higher average number of fruits, 22.00, compared to those treated with crude extracts from other solvents.”
Claim · model-written summary
The authors propose W. ugandensis crude extract as biocontrol against R. solanacearum.
- Taxon
- TomatoSolanum lycopersicumt0
- Interactor
- R. solanacearumRalstonia solanacearume0pathogen
- Outcome
- W. ugandensis crude extract has the ability to be used as antibacterial biocontrole0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato”
e0“W. ugandensis crude extract has the ability to be used as antibacterial biocontrol against R. solanacearum”
The same questions in other papers
botanical · Ralstonia solanacearum · Solanum lycopersicum (tomato)Positive and negative results
27 papers in the same direction as this paper · 3 in the opposite direction
- no effect
- negative
- no effect
27 papers more in this group
See all 31 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.