Abstract
In an attempt to develop effective biocontrol system for management of stem rot disease in groundnut, 57 bacterial isolates and 13 isolates of Trichoderma spp. were evaluated for their antagonistic activity against Sclerotium rolfsii. The antagonists were selected based on their ability to inhibit the external growth of S. rolfsii from infected groundnut seeds. Four isolates of Pseudomonas fluorescens, GB 4, GB 8, GB 10 and GB 27, and T. viride pq 1 were identified as potent antagonists of S. rolfsii. T. viride pq 1 produced extracellular chitinase and parasitized the mycelium of S. rolfsii. Under controlled environment conditions, P. fluorescens GB 10, GB 27, T. viride pq 1 and the systemic fungicide Thiram(equation omitted) reduced the mortality of S. rolfsii inoculated to groundnut seedlings by 58.0％, 55.9％, 70.0％ and 25.9％, respectively compared to control. In vitro growth of P. fluorescens GB 10 and GB 27 was compatible with T. viride pq 1 and Thiram(equation omitted). Integrated use of these two bacterial isolates with T. viride pq 1 or Thiram(equation omitted) improved their biocontrol efficacy. Combined application of either GB 10 or GB 27 with T. viride pq 1 was significantly effective than that with Thiram(equation omitted) in protecting groundnut seedlings from stem rot infection.
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Claims 10
Claim · model-written summary
Four Pseudomonas fluorescens isolates (GB 4, GB 8, GB 10 and GB 27) and Trichoderma viride pq 1 were identified as potent antagonists of S. rolfsii.
- Taxon
- groundnut
Arachis hypogaeae0 - Interactor
- S. rolfsii
Agroathelia rolfsiie1pathogen - Second interactor
- Pseudomonas fluorescens
.JPG?width=60)
Pseudomonas fluorescense1biocontrol_agent - Outcome
- identified as potent antagonistse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.JPG?width=500)
Verbatim
e0“management of stem rot disease in groundnut”
e1“Four isolates of Pseudomonas fluorescens, GB 4, GB 8, GB 10 and GB 27, and T. viride pq 1 were identified as potent antagonists of S. rolfsii”
Claim · model-written summary
Trichoderma viride pq 1 produced extracellular chitinase.
- Taxon
- groundnutArachis hypogaeae0
- Interactor
- T. viride pq 1
Trichoderma viridee2biocontrol_agent - Second interactor
- S. rolfsiiAgroathelia rolfsiie2pathogen
- Outcome
- produced extracellular chitinasee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“management of stem rot disease in groundnut”
e2“T. viride pq 1 produced extracellular chitinase and parasitized the mycelium of S. rolfsii”
Claim · model-written summary
Trichoderma viride pq 1 parasitized the mycelium of S. rolfsii.
- Taxon
- groundnutArachis hypogaeae0
- Interactor
- S. rolfsiiAgroathelia rolfsiie2pathogen
- Second interactor
- T. viride pq 1Trichoderma viridee2biocontrol_agent
- Outcome
- parasitized the myceliume2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“management of stem rot disease in groundnut”
e2“T. viride pq 1 produced extracellular chitinase and parasitized the mycelium of S. rolfsii”
Claim · model-written summary
Under controlled environment conditions, P. fluorescens GB 10 reduced S. rolfsii-associated seedling mortality by 58.0% compared with control.
- Taxon
- groundnutArachis hypogaeae0
- Treatment
- P. fluorescens GB 10e3
- Interactor
- S. rolfsiiAgroathelia rolfsiie3pathogen
- Second interactor
- P. fluorescens GB 10Pseudomonas fluorescense3biocontrol_agent
- Outcome
- mortalitye3
- Direction
- reducede3
- Value
- 58.0％e3
- Comparator
- controle3
- Setting
- controlled environment conditionse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“management of stem rot disease in groundnut”
e3“Under controlled environment conditions, P. fluorescens GB 10, GB 27, T. viride pq 1 and the systemic fungicide Thiram(equation omitted) reduced the mortality of S. rolfsii inoculated to groundnut seedlings by 58.0％, 55.9％, 70.0％ and 25.9％, respectively compared to control”
Claim · model-written summary
Under controlled environment conditions, P. fluorescens GB 27 reduced S. rolfsii-associated seedling mortality by 55.9% compared with control.
- Taxon
- groundnutArachis hypogaeae0
- Treatment
- GB 27e3
- Interactor
- S. rolfsiiAgroathelia rolfsiie3pathogen
- Second interactor
- GB 27e3biocontrol_agent
- Outcome
- mortalitye3
- Direction
- reducede3
- Value
- 55.9％e3
- Comparator
- controle3
- Setting
- controlled environment conditionse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“management of stem rot disease in groundnut”
e3“Under controlled environment conditions, P. fluorescens GB 10, GB 27, T. viride pq 1 and the systemic fungicide Thiram(equation omitted) reduced the mortality of S. rolfsii inoculated to groundnut seedlings by 58.0％, 55.9％, 70.0％ and 25.9％, respectively compared to control”
Claim · model-written summary
Under controlled environment conditions, Trichoderma viride pq 1 reduced S. rolfsii-associated seedling mortality by 70.0% compared with control.
- Taxon
- groundnutArachis hypogaeae0
- Treatment
- T. viride pq 1e3
- Interactor
- S. rolfsiiAgroathelia rolfsiie3pathogen
- Second interactor
- T. viride pq 1Trichoderma viridee3biocontrol_agent
- Outcome
- mortalitye3
- Direction
- reducede3
- Value
- 70.0％e3
- Comparator
- controle3
- Setting
- controlled environment conditionse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“management of stem rot disease in groundnut”
e3“Under controlled environment conditions, P. fluorescens GB 10, GB 27, T. viride pq 1 and the systemic fungicide Thiram(equation omitted) reduced the mortality of S. rolfsii inoculated to groundnut seedlings by 58.0％, 55.9％, 70.0％ and 25.9％, respectively compared to control”
Claim · model-written summary
Under controlled environment conditions, the systemic fungicide Thiram reduced S. rolfsii-associated seedling mortality by 25.9% compared with control.
- Taxon
- groundnutArachis hypogaeae0
- Treatment
- systemic fungicide Thiram(equation omitted)e3
- Interactor
- S. rolfsiiAgroathelia rolfsiie3pathogen
- Outcome
- mortalitye3
- Direction
- reducede3
- Value
- 25.9％e3
- Comparator
- controle3
- Setting
- controlled environment conditionse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“management of stem rot disease in groundnut”
e3“Under controlled environment conditions, P. fluorescens GB 10, GB 27, T. viride pq 1 and the systemic fungicide Thiram(equation omitted) reduced the mortality of S. rolfsii inoculated to groundnut seedlings by 58.0％, 55.9％, 70.0％ and 25.9％, respectively compared to control”
Claim · model-written summary
In vitro growth of P. fluorescens GB 10 was compatible with T. viride pq 1 and Thiram.
- Taxon
- groundnutArachis hypogaeae0
- Interactor
- P. fluorescens GB 10Pseudomonas fluorescense4biocontrol_agent
- Second interactor
- T. viride pq 1Trichoderma viridee4biocontrol_agent
- Outcome
- In vitro growthe4
- Qualifier
- was compatible withe4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“management of stem rot disease in groundnut”
e4“In vitro growth of P. fluorescens GB 10 and GB 27 was compatible with T. viride pq 1 and Thiram(equation omitted)”
Claim · model-written summary
Integrated use of two bacterial isolates with T. viride pq 1 or Thiram improved biocontrol efficacy against stem rot in groundnut.
- Taxon
- groundnutArachis hypogaeae0
- Treatment
- Integrated use of these two bacterial isolates with T. viride pq 1e5
- Outcome
- biocontrol efficacye5
- Direction
- improvede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“management of stem rot disease in groundnut”
e5“Integrated use of these two bacterial isolates with T. viride pq 1 or Thiram(equation omitted) improved their biocontrol efficacy”
Claim · model-written summary
Combined application of GB 10 or GB 27 with T. viride pq 1 was significantly more effective than combining them with Thiram in protecting groundnut seedlings from stem rot.
- Taxon
- groundnutArachis hypogaeae0
- Treatment
- Combined application of either GB 10 or GB 27 with T. viride pq 1e6
- Outcome
- protecting groundnut seedlings from stem rot infectione6
- Direction
- significantly effectivee6
- Comparator
- with Thiram(equation omitted)e6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“management of stem rot disease in groundnut”
e6“Combined application of either GB 10 or GB 27 with T. viride pq 1 was significantly effective than that with Thiram(equation omitted) in protecting groundnut seedlings from stem rot infection”
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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.