Abstract
This study was carried out to evaluate the antibacterial activity of clove (Eugenia caryophylata) hexane extract, cinnamon (Cinnamomum zelanicum), and datura (Datura metel) ethanol extracts against the phytopathogenic Erwinia carotovora subsp. atrosepticagrowth, causative agent of black stem and soft rot on potato, in both cultured media and on plants in pots under natural conditions. Concentrations of 0.2, 0.5, 1, 3 and 5% of each extract were subjected for preliminary antibacterial assays against E. carotovora subsp.atroseptica in nutrient agar by pour plate method. The results of in vitro antibacterial activity showed that hexane extract (essential oil) of clove at 0.2% exhibits the highest inhibitory effect against the pathogenic bacteria, 100% compared to 80 and 90% with ethanol extracts of cinnamon and datura at the same concentration. The complete inhibition of E. carotovorasubsp. atroseptica growth by cinnamon and datura extracts was achieved at 0.5% concentration. Similar results of the antibacterial activity of the extracts on E. carotovorasubsp. atroseptica, on the plant in the pots under natural conditions, were obtained. The greatest suppression of potato black stem and soft rot disease was obtained on plants grown from extract-treated tubers sown in bacteria contaminated soil as well as on plants grown from bacteria-contaminated tubers sown in extract-treated soil (zero infection), compared with untreated tubers in contaminated soil, or contaminated tuber in untreated soil. The application of extracts on potato plant foliage grown from bacteria-contaminated tubers or in bacteria-contaminated soil had no effect on disease incidence, but the application of the extracts on the foliage before bacterial contamination highly inhibited the disease incidence. Key words: Antibacterial, clove, cinnamon, datura, Erwinia carotovora, black stem, soft rot, potato disease, plant extracts.
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Claims 10
Claim · model-written summary
Clove extract at 0.2% inhibited bacterial growth by 100%.
- Taxon
- potato
Solanum tuberosumt0 - Treatment
- hexane extract (essential oil) of clove at 0.2%e0
- Interactor
- pathogenic bacteriae0pathogen
- Outcome
- inhibitory effect against the pathogenic bacteriae0
- Direction
- higheste0
- Value
- 100%e0
- Comparator
- ethanol extracts of cinnamon and daturae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“hexane extract (essential oil) of clove at 0.2% exhibits the highest inhibitory effect against the pathogenic bacteria, 100% compared to 80 and 90% with ethanol extracts of cinnamon and datura at the same concentration.”
t0“potato”
Claim · model-written summary
Cinnamon extract at 0.2% inhibited bacterial growth by 80%.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- ethanol extracts of cinnamone0
- Interactor
- Erwinia carotovora subsp. atroseptica
Pectobacterium atrosepticumt0pathogen - Outcome
- pathogenic bacteriae1
- Value
- 80e0
- Comparator
- clovee1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“100% compared to 80 and 90% with ethanol extracts of cinnamon and datura at the same concentration.”
t0“Erwinia carotovora subsp. atroseptica causative agent of black stem and soft rot on potato”
e1“hexane extract (essential oil) of clove at 0.2% exhibits the highest inhibitory effect against the pathogenic bacteria, 100% compared to 80 and 90% with ethanol extracts of cinnamon and datura at the same concentration.”
Claim · model-written summary
Datura extract at 0.2% inhibited bacterial growth by 90%.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- daturae0
- Interactor
- Erwinia carotovora subsp. atrosepticaPectobacterium atrosepticumt0pathogen
- Outcome
- pathogenic bacteriae1
- Value
- 90%e0
- Comparator
- clovet0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“100% compared to 80 and 90% with ethanol extracts of cinnamon and datura at the same concentration.”
t0“clove, cinnamon, and datura extracts against Erwinia carotovora subsp. atroseptica causative agent of black stem and soft rot on potato”
e1“hexane extract (essential oil) of clove at 0.2% exhibits the highest inhibitory effect against the pathogenic bacteria, 100% compared to 80 and 90% with ethanol extracts of cinnamon and datura at the same concentration.”
Claim · model-written summary
Cinnamon extract completely inhibited bacterial growth at 0.5%.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- cinnamone0
- Interactor
- E. carotovorasubsp. atrosepticae0pathogen
- Outcome
- E. carotovorasubsp. atroseptica growthe0
- Direction
- complete inhibitione0
- Value
- 0.5%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The complete inhibition of E. carotovorasubsp. atroseptica growth by cinnamon and datura extracts was achieved at 0.5% concentration.”
t0“potato”
Claim · model-written summary
Datura extract completely inhibited bacterial growth at 0.5%.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- daturae0
- Interactor
- E. carotovorasubsp. atrosepticae0pathogen
- Outcome
- E. carotovorasubsp. atroseptica growthe0
- Direction
- complete inhibitione0
- Value
- 0.5%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The complete inhibition of E. carotovorasubsp. atroseptica growth by cinnamon and datura extracts was achieved at 0.5% concentration.”
t0“potato”
Claim · model-written summary
Extracts showed similar antibacterial activity on plants in pots under natural conditions.
- Taxon
- potatoSolanum tuberosumt0
- Interactor
- E. carotovorasubsp. atrosepticae0pathogen
- Outcome
- antibacterial activity of the extracts on E. carotovorasubsp. atrosepticae0
- Direction
- Similare0
- Setting
- pots under natural conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Similar results of the antibacterial activity of the extracts on E. carotovorasubsp. atroseptica, on the plant in the pots under natural conditions, were obtained.”
t0“potato”
Claim · model-written summary
Treating tubers with extracts before sowing in contaminated soil produced zero potato disease infection.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- extract-treated tuberse0
- Outcome
- zero infectione0
- Comparator
- untreated tubers in contaminated soile0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plants grown from extract-treated tubers sown in bacteria contaminated soil as well as on plants grown from bacteria-contaminated tubers sown in extract-treated soil (zero infection), compared with untreated tubers in contaminated soil, or contaminated tuber in untreated soil.”
t0“potato”
Claim · model-written summary
Treating contaminated soil with extracts before sowing contaminated tubers produced zero infection.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- extract-treated soile0
- Outcome
- zero infectione0
- Comparator
- contaminated tuber in untreated soile0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plants grown from bacteria-contaminated tubers sown in extract-treated soil (zero infection), compared with untreated tubers in contaminated soil, or contaminated tuber in untreated soil.”
t0“potato”
Claim · model-written summary
Foliage application after contamination had no effect on disease incidence.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- application of extracts on potato plant foliagee0
- Outcome
- disease incidencee0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The application of extracts on potato plant foliage grown from bacteria-contaminated tubers or in bacteria-contaminated soil had no effect on disease incidence”
Claim · model-written summary
Foliage application before bacterial contamination highly inhibited disease incidence.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- application of the extracts on the foliage before bacterial contaminatione0
- Interactor
- bacteriale0pathogen
- Outcome
- disease incidencee0
- Direction
- highly inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the application of the extracts on the foliage before bacterial contamination highly inhibited the disease incidence.”
t0“potato”
The same questions in other papers
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- positive
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botanical · disease · Solanum tuberosum (potato)Positive and negative results
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- no effect
- negative
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66 papers more in this group
See all 70 papers →botanical · Pectobacterium atrosepticum · Solanum tuberosum (potato)Results agree
1 paper in the same direction as this paper
- positive
botanical · Bacteria · Solanum tuberosum (potato)Results agree
1 paper in the same direction as this paper
- 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.