Abstract
Root-knot nematodes are the major diseases in protected cultivation around the world. Bio-organic fertilizer has become a research hotspot, with a variety of microorganisms that control various vegetable soil-borne diseases. This study screened nematocidal microorganisms from fresh vermicompost, explored the inhibitory substances produced by biocontrol agents, and evaluated their potential biocontrol ability in the pot and field under greenhouse conditions. The highly effective antagonistic microbes of Meloidogyne incognita (M. incognita) were screened. Strains YL1 and YL31 were identified as Peribacillus frigoritolerans, and strain YL6 was identified as Lysinibacillus fusiformis. The three strains all produced chitinase and protease, which prevented the normal development of eggs and the second-stage juveniles (J2) by destroying their appearance. The three strains all improved potassium-dissolving ability, and the strains YL1 and YL6 also enhanced phosphorus-dissolving ability. Pot experiments showed that tomato root knots were reduced, and plant growth improved. Field tests showed that the root-knot index and nematode population were reduced significantly, and cucumber growth and yield were enhanced. Strain YL1 had the best control effect with 70.6%, and the yield increased by 14.9% compared with the control. Overall, this study showed the ability of antagonistic bacteria YL1, YL6, and YL31 to control root-knot nematodes, and these antagonistic bacteria could be developed as biocontrol agents for sustainable agriculture.
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Claims 12
Claim · model-written summary
Antagonistic microbes reduced tomato root knots in pot experiments.
- Taxon
- tomato
Solanum lycopersicume5 - Treatment
- antagonistic microbese1
- Interactor
- Meloidogyne incognita
_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=60)
Meloidogyne incognitae1pest - Outcome
- root knotse5
- Direction
- reducede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=500)
Verbatim
e1“The highly effective antagonistic microbes of Meloidogyne incognita (M. incognita) were screened”
e5“Pot experiments showed that tomato root knots were reduced, and plant growth improved”
Claim · model-written summary
Antagonistic microbes improved plant growth of tomato in pot experiments.
- Taxon
- tomatoSolanum lycopersicume5
- Treatment
- antagonistic microbese1
- Outcome
- plant growthe5
- Direction
- improvede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The highly effective antagonistic microbes of Meloidogyne incognita (M. incognita) were screened”
e5“Pot experiments showed that tomato root knots were reduced, and plant growth improved”
Claim · model-written summary
Antagonistic microbes significantly reduced the root-knot index and nematode population in field tests on tomato and cucumber.
- Taxon
- Tomato and Cucumber
Cucumis sativusSolanum lycopersicumt0 - Treatment
- antagonistic microbese1
- Interactor
- Meloidogyne incognitaMeloidogyne incognitae1pest
- Outcome
- root-knot index and nematode populatione6
- Direction
- reducede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The highly effective antagonistic microbes of Meloidogyne incognita (M. incognita) were screened”
e6“Field tests showed that the root-knot index and nematode population were reduced significantly, and cucumber growth and yield were enhanced”
t0“Tomato and Cucumber”
Claim · model-written summary
Antagonistic microbes enhanced cucumber growth and yield in field tests.
- Taxon
- cucumberCucumis sativuse6
- Treatment
- antagonistic microbese1
- Outcome
- growth and yielde6
- Direction
- enhancede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The highly effective antagonistic microbes of Meloidogyne incognita (M. incognita) were screened”
e6“Field tests showed that the root-knot index and nematode population were reduced significantly, and cucumber growth and yield were enhanced”
Claim · model-written summary
Strain YL1 had the best control effect against root-knot nematodes, with 70.6%.
- Taxon
- Tomato and CucumberCucumis sativusSolanum lycopersicumt0
- Treatment
- Strain YL1e7
- Interactor
- Meloidogyne incognitaMeloidogyne incognitat1pest
- Outcome
- control effecte7
- Direction
- beste7
- Value
- 70.6%e7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“Strain YL1 had the best control effect with 70.6%, and the yield increased by 14.9% compared with the control”
t0“Tomato and Cucumber”
t1“Meloidogyne incognita”
Claim · model-written summary
Strain YL1 increased cucumber yield by 14.9% compared with the control.
- Taxon
- cucumberCucumis sativuse6
- Treatment
- Strain YL1e7
- Outcome
- yielde7
- Direction
- increasede7
- Value
- 14.9%e7
- Comparator
- controle7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Field tests showed that the root-knot index and nematode population were reduced significantly, and cucumber growth and yield were enhanced”
e7“Strain YL1 had the best control effect with 70.6%, and the yield increased by 14.9% compared with the control”
Claim · model-written summary
The three strains produced chitinase and protease.
- Taxon
- Tomato and CucumberCucumis sativusSolanum lycopersicumt0
- Material
- three strainse3
- Outcome
- chitinase and proteasee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“The three strains all produced chitinase and protease, which prevented the normal development of eggs and the second-stage juveniles (J2) by destroying their appearance”
t0“Tomato and Cucumber”
Claim · model-written summary
Chitinase and protease prevented normal development of eggs and second-stage juveniles of Meloidogyne incognita.
- Taxon
- Tomato and CucumberCucumis sativusSolanum lycopersicumt0
- Treatment
- chitinase and proteasee3
- Interactor
- Meloidogyne incognitaMeloidogyne incognitae1pest
- Outcome
- normal development of eggs and the second-stage juveniles (J2)e3
- Direction
- preventede3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“The three strains all produced chitinase and protease, which prevented the normal development of eggs and the second-stage juveniles (J2) by destroying their appearance”
e1“The highly effective antagonistic microbes of Meloidogyne incognita (M. incognita) were screened”
t0“Tomato and Cucumber”
Claim · model-written summary
The three strains improved potassium-dissolving ability.
- Taxon
- Tomato and CucumberCucumis sativusSolanum lycopersicumt0
- Material
- three strainse4
- Outcome
- potassium-dissolving abilitye4
- Direction
- improvede4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The three strains all improved potassium-dissolving ability, and the strains YL1 and YL6 also enhanced phosphorus-dissolving ability”
t0“Tomato and Cucumber”
Claim · model-written summary
Strains YL1 and YL6 enhanced phosphorus-dissolving ability.
- Taxon
- Tomato and CucumberCucumis sativusSolanum lycopersicumt0
- Material
- strains YL1 and YL6e4
- Outcome
- phosphorus-dissolving abilitye4
- Direction
- enhancede4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The three strains all improved potassium-dissolving ability, and the strains YL1 and YL6 also enhanced phosphorus-dissolving ability”
t0“Tomato and Cucumber”
Claim · model-written summary
Strains YL1 and YL31 were identified as Peribacillus frigoritolerans, and strain YL6 as Lysinibacillus fusiformis.
- Taxon
- Tomato and CucumberCucumis sativusSolanum lycopersicumt0
- Material
- Strains YL1 and YL31e2
- Outcome
- identified ase2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Strains YL1 and YL31 were identified as Peribacillus frigoritolerans, and strain YL6 was identified as Lysinibacillus fusiformis”
t0“Tomato and Cucumber”
Claim · model-written summary
The antagonistic bacteria should be developed as biocontrol agents for sustainable agriculture.
- Taxon
- Tomato and CucumberCucumis sativusSolanum lycopersicumt0
- Outcome
- developed as biocontrol agentse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“these antagonistic bacteria could be developed as biocontrol agents for sustainable agriculture”
t0“Tomato and Cucumber”
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