Abstract
A total of 4 strains of bacteria were isolated from the leaf surface of the rambutan using a tissue transplanting technique. They were characterized, by a dual culture test, for their efficacy to inhibit mycelial growth of Pythium aphanidermatum, a causal agent of the damping-off on tomato. All 4 strains significantly inhibited mycelial growth of P. aphanidermatum on potato dextrose agar (PDA) at room temperature (27 °C). B-NST-02 and B-NST-03 gave values of inhibition of 62.0 % and 57.5 %, respectively. All strains were identified as Bacillus spp. Antifungal metabolites extracted from all 4 strains were tested at 1,000 mg/l. Tomato seedlings treated in the laboratory with metabolites from B-NST-03 and B-NST-02 showed germination of 85.5 % and 82.0 %, respectively. Under glasshouse conditions, seedling treated with metabolites from B-NST-03 and B-NST-02 provided seed germination rates were 92.5 % and 92.0 %, respectively, while the controls treated with either sterile water or 2 % methanol had only 28.0 % and 26.5 % seed germination rates, respectively. In P. aphanidermatum viability test, mycelia of P. aphanidermatum treated with antifungal metabolites from 4 strains of Bacillus spp. showed no visible growth, while the control with sterile water or 2 % methanol, mycelia of P. aphanidermatum rapidly grew and covered the whole surface of the PDA in the Petri dish within 5 days.
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Claims 9
Claim · model-written summary
All four Bacillus strains significantly inhibited Pythium mycelial growth in dual culture.
- Taxon
- Tomato
Solanum lycopersicumt0 - Interactor
- P. aphanidermatumPythium aphanidermatume0pathogen
- Outcome
- mycelial growth of P. aphanidermatume0
- Direction
- inhibitede0
- Setting
- potato dextrose agar (PDA)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato Damping-off Caused by Pythium aphanidermatum”
e0“All 4 strains significantly inhibited mycelial growth of P. aphanidermatum on potato dextrose agar (PDA) at room temperature (27 °C).”
Claim · model-written summary
B-NST-02 inhibited Pythium growth by 62.0%.
- Taxon
- TomatoSolanum lycopersicumt0
- Material
- B-NST-02e0
- Interactor
- Pythium aphanidermatumPythium aphanidermatumt0pathogen
- Outcome
- values of inhibitione0
- Value
- 62.0 %e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato Damping-off Caused by Pythium aphanidermatum”
e0“B-NST-02 and B-NST-03 gave values of inhibition of 62.0 % and 57.5 %, respectively.”
Claim · model-written summary
B-NST-03 inhibited Pythium growth by 57.5%.
- Taxon
- TomatoSolanum lycopersicumt0
- Material
- B-NST-03e0
- Interactor
- Pythium aphanidermatumPythium aphanidermatumt0pathogen
- Outcome
- values of inhibitione0
- Value
- 57.5 %e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato Damping-off Caused by Pythium aphanidermatum”
e0“B-NST-02 and B-NST-03 gave values of inhibition of 62.0 % and 57.5 %, respectively.”
Claim · model-written summary
All four antagonistic strains were identified as Bacillus spp.
- Taxon
- TomatoSolanum lycopersicumt0
- Interactor
- Bacillus spp.e0biocontrol_agent
- Outcome
- identified as Bacillus spp.e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato Damping-off Caused by Pythium aphanidermatum”
e0“All strains were identified as Bacillus spp.”
Claim · model-written summary
B-NST-03 metabolites gave 85.5% tomato germination in the laboratory.
- Taxon
- TomatoSolanum lycopersicume0
- Treatment
- metabolites from B-NST-03e0
- Outcome
- germinatione0
- Value
- 85.5 %e0
- Setting
- laboratorye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato”
e0“Tomato seedlings treated in the laboratory with metabolites from B-NST-03 and B-NST-02 showed germination of 85.5 % and 82.0 %, respectively.”
Claim · model-written summary
B-NST-02 metabolites gave 82.0% tomato germination in the laboratory.
- Taxon
- TomatoSolanum lycopersicume0
- Treatment
- B-NST-02e0
- Outcome
- germinatione0
- Value
- 82.0 %e0
- Setting
- laboratorye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tomato seedlings treated in the laboratory with metabolites from B-NST-03 and B-NST-02 showed germination of 85.5 % and 82.0 %, respectively.”
Claim · model-written summary
B-NST-03 metabolites gave 92.5% tomato seed germination in the glasshouse, versus 28.0% with sterile water.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- metabolites from B-NST-03e0
- Outcome
- seed germination ratese0
- Direction
- onlye0
- Value
- 92.5 %e0
- Qualifier
- 28.0 %e0
- Comparator
- sterile watere0
- Setting
- glasshouse conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato”
e0“Under glasshouse conditions, seedling treated with metabolites from B-NST-03 and B-NST-02 provided seed germination rates were 92.5 % and 92.0 %, respectively, while the controls treated with either sterile water or 2 % methanol had only 28.0 % and 26.5 % seed germination rates, respectively.”
Claim · model-written summary
B-NST-02 metabolites gave 92.0% tomato seed germination in the glasshouse, versus 26.5% with methanol.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- B-NST-02e0
- Outcome
- seed germination ratese0
- Direction
- onlye0
- Value
- 92.0 %e0
- Qualifier
- 26.5 %e0
- Comparator
- 2 % methanole0
- Setting
- glasshouse conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato”
e0“Under glasshouse conditions, seedling treated with metabolites from B-NST-03 and B-NST-02 provided seed germination rates were 92.5 % and 92.0 %, respectively, while the controls treated with either sterile water or 2 % methanol had only 28.0 % and 26.5 % seed germination rates, respectively.”
Claim · model-written summary
Metabolites from all four Bacillus strains prevented visible Pythium mycelial growth, whereas control mycelia covered the PDA within five days.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- antifungal metabolites from 4 strains of Bacillus spp.e0
- Interactor
- P. aphanidermatumPythium aphanidermatume0pathogen
- Second interactor
- Bacillus spp.e0biocontrol_agent
- Outcome
- mycelia of P. aphanidermatume0
- Direction
- no visible growthe0
- Comparator
- sterile water or 2 % methanole0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato Damping-off Caused by Pythium aphanidermatum”
e0“mycelia of P. aphanidermatum treated with antifungal metabolites from 4 strains of Bacillus spp. showed no visible growth, while the control with sterile water or 2 % methanol, mycelia of P. aphanidermatum rapidly grew and covered the whole surface of the PDA in the Petri dish within 5 days.”
The same questions in other papers
metabolite · growth · Solanum lycopersicum (tomato)Positive and negative results
6 papers in the same direction as this paper · 3 in the opposite direction
- negative
- no effect
- no effect
6 papers more in this group
See all 10 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.