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    In vitro growth characterization and biocontrol potential of naturally occurring nematophagous fungi recovered from rootknot nematode infested vegetable fields in Benin

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    nukenine-influence-2000.pdf (333.8Kb)
    Date
    2015
    Author
    Affokpon, A.
    Coyne, D.L.
    Proft, M. de
    Coosemans, J.
    Type
    Journal Article
    Metadata
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    Abstract/Description
    Naturally occurring fungal antagonists of root-knot nematodes (Meloidogyne spp., RKNs) were collected from 88 root and corresponding rhizosphere soil samples from 50 intensively cultivated fields used for peri-urban vegetable production in Benin, West Africa. Five species of Trichoderma viz.: T. asperellum, T. harzianum, T. brevicompactum, T. hamatum and T. erinaceum and four isolates of Pochonia chlamydosporia were isolated from RKN egg masses on root systems of crops and/or infested soil. During temperature-tolerance assessment studies, most isolates had maximum growth rates in Petri dishes at 28 C. Chlamydospore production by P. chlamydosporia was high in 2:1 v/v sand-milled corn medium. In pots, P. chlamydosporia isolates showed high ability to colonize and persist in tomato rhizosphere over 10 weeks. Pre-planting application with some P. chlamydosporia isolates led to up to 50% infected eggs and 25% reduction of RKN multiplication and root galling damage. This study provides valuable information for the mass rearing of the respective fungal inoculum and the first information on the potential of West African P. chlamydosporia isolates for use against RKN in vegetable production systems.Naturally occurring fungal antagonists of root-knot nematodes (Meloidogyne spp., RKNs) were collected from 88 root and corresponding rhizosphere soil samples from 50 intensively cultivated fields used for peri-urban vegetable production in Benin, West Africa. Five species of Trichoderma viz.: T. asperellum, T. harzianum, T. brevicompactum, T. hamatum and T. erinaceum and four isolates of Pochonia chlamydosporia were isolated from RKN egg masses on root systems of crops and/or infested soil. During temperature-tolerance assessment studies, most isolates had maximum growth rates in Petri dishes at 28 C. Chlamydospore production by P. chlamydosporia was high in 2:1 v/v sand-milled corn medium. In pots, P. chlamydosporia isolates showed high ability to colonize and persist in tomato rhizosphere over 10 weeks. Pre-planting application with some P. chlamydosporia isolates led to up to 50% infected eggs and 25% reduction of RKN multiplication and root galling damage. This study provides valuable information for the mass rearing of the respective fungal inoculum and the first information on the potential of West African P. chlamydosporia isolates for use against RKN in vegetable production systems.Naturally occurring fungal antagonists of root-knot nematodes (Meloidogyne spp., RKNs) were collected from 88 root and corresponding rhizosphere soil samples from 50 intensively cultivated fields used for peri-urban vegetable production in Benin, West Africa. Five species of Trichoderma viz.: T. asperellum, T. harzianum, T. brevicompactum, T. hamatum and T. erinaceum and four isolates of Pochonia chlamydosporia were isolated from RKN egg masses on root systems of crops and/or infested soil. During temperature-tolerance assessment studies, most isolates had maximum growth rates in Petri dishes at 28 C. Chlamydospore production by P. chlamydosporia was high in 2:1 v/v sand-milled corn medium. In pots, P. chlamydosporia isolates showed high ability to colonize and persist in tomato rhizosphere over 10 weeks. Pre-planting application with some P. chlamydosporia isolates led to up to 50% infected eggs and 25% reduction of RKN multiplication and root galling damage. This study provides valuable information for the mass rearing of the respective fungal inoculum and the first information on the potential of West African P. chlamydosporia isolates for use against RKN in vegetable production systems.
    http://www.tandfonline.com/action/showCitFormats?doi=10.1080/09670874.2015.1043971
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/894
    Digital Object Identifier (DOI)
    http://www.tandfonline.com/action/showCitFormats?doi=10.1080/09670874.2015.1043971
    IITA Subjects
    Pest Of Plant
    Agrovoc Terms
    Biodiversity; Biological Control; Meloidogyne
    Regions
    Africa; East Africa
    Countries
    Kenya
    Journals
    International Journal of Pest Management
    Collections
    • Journal and Journal Articles4835
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