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Titel: Laboratory investigation of cauliflower–fungus–insect interactions for cabbage maggot control
Autor/-in: Razinger, Jaka
Lutz, Matthias
Grunder, Jürg
Urek, Gregor
Erschienen in: Journal of economic entomology
Band(Heft): 111
Heft: 6
Seiten: 2578
Seiten bis: 2584
Verlag / Hrsg. Institution: Oxford University Press
Erscheinungsdatum: 2018
Lizenz (gemäss Verlagsvertrag): Lizenz gemäss Verlagsvertrag
Art der Begutachtung: Peer review (Publikation)
Sprache: Englisch
Schlagwörter: Biological control; Entomopathogenic fungi; Plant–microbe–insect interaction; Rhizosphere competence; Soil pest
Fachgebiet (DDC): 635: Gartenpflanzen (Gartenbau)
Zusammenfassung: The cabbage maggot (also known as cabbage root fly [CRF]; Delia radicum L.) is a serious pest of brassicas. The pest's soil-dwelling larvae are especially damaging to young brassica transplants. In light of toxic soil insecticide phase-out novel biocontrol management solutions are sought for. Our research is focused on the development of a biological control strategy involving cauliflower plantlet inoculation with insect pathogenic fungi. This article presents the results of a laboratory investigation of cauliflower × microbe × CRF interactions. Seven isolates of fungi (entomopathogenic and rhizosphere-competent fungi and soil saprotrophs) were tested for their pathogenicity to CRF and their effects on cauliflower plantlets. The laboratory experiments were performed in sterilized substrate. Several strains significantly increased CRF mortality, some at par with a commercial bioinsecticide based on B. bassiana (Balsamo-Crivelli) Vuillemin (Hypocreales: Cordycipitaceae). All strains colonized the rhizoplane, however to varying extent. Some isolates were also reisolated from within healthy plant tissues and thus identified as endophytes. The method of applying conidia had a significant effect on survival and weight of seedlings and rhizoplane and endophytic colonization rates. Two Metarhizium brunneum Petsch (Hypocreales: Clavicipitaceae) isolates exhibited plant growth promotion effects when ungerminated seeds were coated with conidia. The ecological implications of plant × microbe × pest interactions and options for improving the effectiveness of a fungal-based biological CRF management strategy are discussed.
Departement: Life Sciences und Facility Management
Organisationseinheit: Institut für Umwelt und Natürliche Ressourcen (IUNR)
Publikationstyp: Beitrag in wissenschaftlicher Zeitschrift
DOI: 10.1093/jee/toy228
10.21256/zhaw-3406
ISSN: 0022-0493
1938-291X
URI: https://digitalcollection.zhaw.ch/handle/11475/15239
Enthalten in den Sammlungen:Publikationen Life Sciences und Facility Management

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