Abstract
Bacterial wilt disease, caused by Ralstonia solanacearum (Smith) Yabuuchi has become a severe problem in tomato crops and no satisfactory control methods are currently available to reduce damage caused by the disease. For biological control of the disease, plant growth promoting rhizobacteria (PGPR) isolates particularly from Bacillus spp. may be considered as a promising strategy for managing the disease. Thirty nine isolates of Bacillus amyloliquefaciens, isolated from rhizospheric soil of solanaceous crops were characterized antagonistic and plant growth promoting activities in vitro conditions. The isolate UKTBA-8 of B. amyloliquefaciens was found best among all other isolates, that inhibited maximum growth of R. solanacearum under in vitro conditions and formed inhibition zone of 3.96 cm2 followed by HPTBA-1 (3.3 cm2) and MPBA-6 (2.56 cm2). UKTBA-8 solubilized the highest phosphorus (81.59 μg/ ml) produced maximum siderophores to form orange yellow halo (1.96 cm diameter) and indole acetic acid ranging from 41.25–97.41 μg/ml under in vitro conditions. Biocontrol efficacy and plant growth ability of best six bacterial antagonists, viz. HPTBA-1, MPBA-6, JHBA-6, ORTBA-1, KCBA-4 and UKTBA-8 were evaluated to control bacterial wilt disease of tomato cv. Pusa Ruby at National Phytotran Facility, IARI, New Delhi. B. amyloliquefaciens UKTBA-8 treated plants showed least wilt incidence (12.23%) with maximum biocontrol efficacy (83.36%) after 30 days of inoculation.
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Claims 8
Claim · model-written summary
UKTBA-8 inhibited the most R. solanacearum growth, forming a 3.96 cm2 inhibition zone.
- Taxon
- tomato
Solanum lycopersicumt0 - Material
- UKTBA-8e0
- Interactor
- R. solanacearum
Ralstonia solanacearume0pathogen - Second interactor
- B. amyloliquefaciens
.jpg?width=60)
Bacillus amyloliquefaciense0biocontrol_agent - Outcome
- growth of R. solanacearume0
- Direction
- inhibitede0
- Value
- 3.96 cm2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The isolate UKTBA-8 of B. amyloliquefaciens was found best among all other isolates, that inhibited maximum growth of R. solanacearum under in vitro conditions and formed inhibition zone of 3.96 cm2”
t0“tomato”
Claim · model-written summary
HPTBA-1 formed a 3.3 cm2 inhibition zone.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- HPTBA-1e0
- Outcome
- inhibition zonee0
- Value
- 3.3 cm2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inhibition zone of 3.96 cm2 followed by HPTBA-1 (3.3 cm2) and MPBA-6 (2.56 cm2)”
t0“tomato”
Claim · model-written summary
MPBA-6 formed a 2.56 cm2 inhibition zone.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- MPBA-6e0
- Outcome
- inhibition zonee1
- Value
- 2.56 cm2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MPBA-6 (2.56 cm2)”
e1“inhibition zone of 3.96 cm2 followed by HPTBA-1 (3.3 cm2) and MPBA-6 (2.56 cm2)”
t0“tomato”
Claim · model-written summary
UKTBA-8 solubilized the most phosphorus, at 81.59 μg/ml.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- UKTBA-8e0
- Outcome
- phosphoruse0
- Direction
- higheste0
- Value
- 81.59 μg/ mle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“UKTBA-8 solubilized the highest phosphorus (81.59 μg/ ml) produced maximum siderophores to form orange yellow halo (1.96 cm diameter) and indole acetic acid ranging from 41.25–97.41 μg/ml under in vitro conditions”
t0“tomato”
Claim · model-written summary
UKTBA-8 produced the most siderophores, with a 1.96 cm halo.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- UKTBA-8e0
- Outcome
- siderophorese0
- Direction
- maximume0
- Value
- 1.96 cm diametere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“UKTBA-8 solubilized the highest phosphorus (81.59 μg/ ml) produced maximum siderophores to form orange yellow halo (1.96 cm diameter) and indole acetic acid ranging from 41.25–97.41 μg/ml under in vitro conditions”
t0“tomato”
Claim · model-written summary
UKTBA-8 produced indole acetic acid at 41.25–97.41 μg/ml.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- UKTBA-8e1
- Outcome
- indole acetic acide0
- Value
- 41.25–97.41 μg/mle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“indole acetic acid ranging from 41.25–97.41 μg/ml under in vitro conditions”
t0“tomato”
e1“UKTBA-8 solubilized the highest phosphorus”
Claim · model-written summary
UKTBA-8 treated tomato had 12.23% wilt incidence after 30 days.
- Taxon
- tomatoSolanum lycopersicume1
- Material
- Pusa Rubye1
- Treatment
- B. amyloliquefaciens UKTBA-8e0
- Interactor
- Ralstonia solanacearumRalstonia solanacearume2pathogen
- Second interactor
- B. amyloliquefaciensBacillus amyloliquefaciense0biocontrol_agent
- Outcome
- wilt incidencee0
- Direction
- leaste0
- Value
- 12.23%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“B. amyloliquefaciens UKTBA-8 treated plants showed least wilt incidence (12.23%) with maximum biocontrol efficacy (83.36%) after 30 days of inoculation.”
e1“bacterial wilt disease of tomato cv. Pusa Ruby”
e2“caused by Ralstonia solanacearum (Smith) Yabuuchi”
Claim · model-written summary
UKTBA-8 achieved 83.36% biocontrol efficacy after 30 days.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- B. amyloliquefaciens UKTBA-8e0
- Interactor
- Ralstonia solanacearumRalstonia solanacearume2pathogen
- Second interactor
- B. amyloliquefaciensBacillus amyloliquefaciense0biocontrol_agent
- Outcome
- biocontrol efficacye0
- Direction
- maximume0
- Value
- 83.36%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“B. amyloliquefaciens UKTBA-8 treated plants showed least wilt incidence (12.23%) with maximum biocontrol efficacy (83.36%) after 30 days of inoculation.”
e1“bacterial wilt disease of tomato cv. Pusa Ruby”
e2“caused by Ralstonia solanacearum (Smith) Yabuuchi”
The same questions in other papers
Bacillus amyloliquefaciens · Ralstonia solanacearum · Solanum lycopersicum (tomato)Results agree
3 papers in the same direction as this paper
- 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.