Abstract
Ten isolates of Ralstonia solanacearum were isolated from naturally infected potato plants, collected from different localities of Gharbia, El- Minia, Assiut and sohag governorates. The isolate GK5 exhibited the highest wilt severity. Antibacterial activity of aqueous plant extracts of Hibsicus sabdariffa, Punica granatum and Eucalyptus, spp. were tested against Ralstonia solanacearum the causal pathogen of bacterial wilt of potato in vitro, vivo and field experiments. In vitro, all concentrations 25%,50%, 75% and 100% of the tested plant extracts were used against of the pathogen. Among all tested concentrations of plant extracts only the concentration 100% and 75% from extract Hibsicus sabdariffa found to be able to inhibit the growth of bacterial pathogen in vitro. In vivo experiment, all plant extracts tested significantly reduced diseases severity by Hibsicus sabdariffa (13.2%) followed by Punica granatum (35.85%). In field experiment, application of plant extracts caused highest reduction in severity of bacterial wilt. These three plant extracts showed the increased activity of defences related enzymes viz, peroxidase (PO), polyphenoloxidase (PPO) and phenylalanine ammonia- layes (PAL) in treated potato plants challenged with Ralstonia solanacearum. Significant activities of PO, PPO and PAL was observed at 8days after the treatment. The maximum PO (4.5 unit/ mg potein) treatment with Punica granatum.
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Claims 8
Claim · model-written summary
Isolate GK5 had the highest wilt severity.
- Taxon
- potato
Solanum tuberosumt0 - Material
- GK5e0
- Outcome
- wilt severitye0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The isolate GK5 exhibited the highest wilt severity.”
t0“potato brown rot and wilt disease”
Claim · model-written summary
The 100% Hibsicus sabdariffa extract inhibited Ralstonia solanacearum growth in vitro.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- concentration 100% and 75% from extract Hibsicus sabdariffae0
- Interactor
- Ralstonia solanacearum
Ralstonia solanacearumt0pathogen - Outcome
- growth of bacterial pathogene0
- Direction
- inhibite0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“only the concentration 100% and 75% from extract Hibsicus sabdariffa found to be able to inhibit the growth of bacterial pathogen in vitro.”
t0“potato brown rot and wilt disease caused by Ralstonia solanacearum”
Claim · model-written summary
Hibsicus sabdariffa extract reduced potato disease severity to 13.2% in vivo.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- Hibsicus sabdariffae0
- Interactor
- Ralstonia solanacearumRalstonia solanacearumt0pathogen
- Outcome
- diseases severitye0
- Direction
- reducede0
- Value
- 13.2%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“all plant extracts tested significantly reduced diseases severity by Hibsicus sabdariffa (13.2%) followed by Punica granatum (35.85%).”
t0“potato brown rot and wilt disease caused by Ralstonia solanacearum”
Claim · model-written summary
Punica granatum extract reduced potato disease severity to 35.85% in vivo.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- Punica granatume0
- Interactor
- Ralstonia solanacearumRalstonia solanacearumt0pathogen
- Outcome
- diseases severitye0
- Direction
- reducede0
- Value
- 35.85%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“all plant extracts tested significantly reduced diseases severity by Hibsicus sabdariffa (13.2%) followed by Punica granatum (35.85%).”
t0“potato brown rot and wilt disease caused by Ralstonia solanacearum”
Claim · model-written summary
Plant extracts reduced bacterial wilt severity in the field.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- application of plant extractse0
- Interactor
- Ralstonia solanacearumRalstonia solanacearumt0pathogen
- Outcome
- severity of bacterial wilte0
- Direction
- reductione0
- Setting
- fielde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In field experiment, application of plant extracts caused highest reduction in severity of bacterial wilt.”
t0“potato brown rot and wilt disease caused by Ralstonia solanacearum”
Claim · model-written summary
The three extracts increased PO, PPO, and PAL activity in challenged potato plants.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- three plant extractse0
- Interactor
- Ralstonia solanacearumRalstonia solanacearume0pathogen
- Gene
- peroxidase (PO), polyphenoloxidase (PPO) and phenylalanine ammonia- layes (PAL)e0
- Outcome
- activity of defences related enzymese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These three plant extracts showed the increased activity of defences related enzymes viz, peroxidase (PO), polyphenoloxidase (PPO) and phenylalanine ammonia- layes (PAL) in treated potato plants challenged with Ralstonia solanacearum.”
Claim · model-written summary
PO, PPO, and PAL activity was significant eight days after treatment.
- Taxon
- potatoSolanum tuberosumt0
- Outcome
- activities of PO, PPO and PALe0
- Qualifier
- 8days after the treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant activities of PO, PPO and PAL was observed at 8days after the treatment.”
t0“potato brown rot and wilt disease”
Claim · model-written summary
Punica granatum treatment yielded maximum PO activity of 4.5 unit/ mg potein.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- Punica granatume0
- Gene
- POe0
- Outcome
- POe0
- Direction
- maximume0
- Value
- 4.5 unit/ mg poteine0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The maximum PO (4.5 unit/ mg potein) treatment with Punica granatum.”
t0“potato brown rot and wilt disease”
The same questions in other papers
Punica granatum · Ralstonia solanacearum · Solanum tuberosum (potato)Results agree
1 paper in the same direction as this paper
- positive
botanical · Ralstonia solanacearum · Solanum tuberosum (potato)Results agree
7 papers in the same direction as this paper
- positive
- positive
- positive
4 papers more in this group
See all 8 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.