Abstract
Four rhizobacteria selected out of over 500 isolates from rhizosphere of the vegetables in China were further studied for suppression of the root-knot nematode and soil-borne fungal pathogens in laboratory and greenhouse in Belgium. They were identified as Brevibacillus brevis or Bacillus subtilis by Biolog test and partial 16s rDNA sequence comparison. They not only inhibited the radial growth of the root-infecting fungi Rhizoctonia solani SX-6, Pythium aphanidermatum ZJP-1 and Fusarium oxysporum f.sp. cucumerinum ZJF-2 in vitro, but also exhibited strong nematicidal activity by killing the second stage larvae of Meloidogyne javanica to varying degrees in the greenhouse. The toxic principles of bacterium B7 that showed the highest juvenile mortality were partially characterized. The active factors were heat stability and resistance to extreme pH values. B7 used either as seed dressing or soil drench significantly reduced the nematode populations in the rhizosphere and enhanced the growth of mungbean plants over the controls in the presence or absence of R. solani.
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Claims 4
Claim · model-written summary
B7 seed dressing significantly reduced rhizosphere nematode populations relative to controls.
- Taxon
- mungbean plants
.jpg?width=60)
Vigna radiatae0 - Treatment
- B7 used either as seed dressinge0
- Interactor
- Meloidogyne javanicaMeloidogyne javanicae1pest
- Second interactor
- B7e0biocontrol_agent
- Outcome
- nematode populations in the rhizospheree0
- Direction
- reducede0
- Comparator
- controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“B7 used either as seed dressing or soil drench significantly reduced the nematode populations in the rhizosphere and enhanced the growth of mungbean plants over the controls in the presence or absence of R. solani”
e1“Meloidogyne javanica”
Claim · model-written summary
B7 soil drench significantly reduced rhizosphere nematode populations relative to controls.
- Taxon
- mungbean plantsVigna radiatae0
- Treatment
- soil drenche0
- Interactor
- Meloidogyne javanicaMeloidogyne javanicae1pest
- Second interactor
- B7e0biocontrol_agent
- Outcome
- nematode populations in the rhizospheree0
- Direction
- reducede0
- Comparator
- controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“B7 used either as seed dressing or soil drench significantly reduced the nematode populations in the rhizosphere and enhanced the growth of mungbean plants over the controls in the presence or absence of R. solani”
e1“Meloidogyne javanica”
Claim · model-written summary
B7 seed dressing significantly enhanced mungbean growth relative to controls.
- Taxon
- mungbean plantsVigna radiatae0
- Treatment
- B7 used either as seed dressinge0
- Interactor
- B7e0biocontrol_agent
- Outcome
- growth of mungbean plantse0
- Direction
- enhancede0
- Qualifier
- in the presence or absence of R. solanie0
- Comparator
- controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“B7 used either as seed dressing or soil drench significantly reduced the nematode populations in the rhizosphere and enhanced the growth of mungbean plants over the controls in the presence or absence of R. solani”
Claim · model-written summary
B7 soil drench significantly enhanced mungbean growth relative to controls.
- Taxon
- mungbean plantsVigna radiatae0
- Treatment
- soil drenche0
- Interactor
- B7e0biocontrol_agent
- Outcome
- growth of mungbean plantse0
- Direction
- enhancede0
- Qualifier
- in the presence or absence of R. solanie0
- Comparator
- controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“B7 used either as seed dressing or soil drench significantly reduced the nematode populations in the rhizosphere and enhanced the growth of mungbean plants over the controls in the presence or absence of R. solani”
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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.