Assessment of Yersinia entomophaga as a control agent of the diamondback moth Plutella xylostella
| Autor: | Mark R. H. Hurst, Amy K. Beattie, Chikako van Koten, Michael Brownbridge, Sandra Andrea Jones, Hilda L. Collins, Anthony M. Shelton |
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| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
0301 basic medicine animal structures Biological pest control Spinosad Moths 01 natural sciences Insect Control Insecticide Resistance 03 medical and health sciences chemistry.chemical_compound Bacillus thuringiensis parasitic diseases medicine Animals Mortality Pest Control Biological Ecology Evolution Behavior and Systematics Larva Diamondback moth biology Indoxacarb fungi food and beverages Plutella Entomophaga biology.organism_classification Yersinia 010602 entomology Horticulture 030104 developmental biology chemistry Biological Control Agents medicine.drug |
| Zdroj: | Journal of invertebrate pathology. 162 |
| ISSN: | 1096-0805 |
| Popis: | The application of the biocontrol bacterium Yersinia entomophaga as a foliar spray was assessed for its efficacy against larvae of the diamondback moth, Plutella xylostella. The bacterium was applied as either a broth suspension, or as a biopolymer-based gel foliar spray and compared with commercial insecticides Dipel (Bacillus thuringiensis) and Spinosad. The performance of Y. entomophaga was comparable with that of Dipel. The gel-based formulation extended leaf persistence over that of the basic broth culture spray, while also providing higher initial foliar deposition rates. The bacterium was found to multiply within the P. xylostella larvae to 5.8 × 105 cells per larva, while the median lethal dose (LD50) was determined to be 2.69 × 103 cells per larva. Importantly, B. thuringiensis Cry1A-resistant, Cry1C-resistant, indoxacarb/pyrethroid-resistant, and Spinosad-resistant P. xylostella larvae were susceptible to Y. entomophaga. |
| Databáze: | OpenAIRE |
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