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Pre-inoculation of cucumber roots with Verticillium lecanii (Lecanicillium muscarium) induces resistance to powdery mildew OAK
Hirano, Emiko; Koike, Masanori; Aiuchi, Daigo; Tani, Masayuki; 平野, 恵美子; 小池, 正徳; 相内, 大吾; 谷, 昌幸.
The ability of Verticillium lecanii (Lecanicillium muscarium; B-2) to induce host resistance and defense responses against subsequent challenge with cucumber powdery mildews was examined in a glasshouse. A root test showed that, after inoculation with V. lecanii blastspore on cucumber roots, induction of systemic resistance in those V. lecanii pre-inoculated plants engendered significantly fewer lesions and reduced disease severity compared with non-inoculated plants. Furthermore, in plants inoculated with V. lecanii blastspore on their roots, the fungi showed high colonizing ability on cucumber rhizoplane and inside root tissues. Nevertheless, activities of peroxidase (PO) and phenylalanine ammonia-lyase (PAL) increased slightly, but not significantly. In...
Palavras-chave: Induced resistance; Lecanicillium muscarium; Powdery Mildew; Verticillium lecanii.
Ano: 2008 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2277
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昆虫寄生性Lecanicillium muscarium融合株2aF43およびオンシツツヤコバチの併用によるオンシツコナジラミ防除効果の評価 OAK
風間, 諒太; 谷, 昌幸; 小池, 正徳; 相内, 大吾; KAZAMA, RYOTA; TANI, MASAYUKI; KOIKE, MASANORI; AIUCHI, DAIGO.
This study aims to evaluate the control efficacy of greenhouse whitefly by co-application of entomopathogenic fungus Lecanicillium muscarium hybrid strain 2aF43 and greenhouse whitefly parasitoid Encarsia formosa, and to reveal the interaction between both natural enemies. Although, the emergence rate of adult greenhouse whitefly reached 93.2% in control plot, co-application plot indicated significantly lower emergence rate (4.2%). Co-application plot showed higher fungal infection compared with singularly L. muscarium inoculated plot. Parasitization rate in singularly E. formosa released plot reached 81.7% and emergence rate of parasitoid was 72.1%, but lower parasitization and emergence rate of parasitoid (13.2% and 2.0% respectively) were detected on...
Palavras-chave: Biological control; Co-application; Greenhouse whitefly; Interaction; Lecanicillium muscarium; Trialeurodes vaporariorum.
Ano: 2012 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3837
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