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http://dx.doi.org/10.5656/KSAE.2016.11.0.074

Occurrence of the Entomopathogenic Fungus Zoophthora radicans (Entomophthorales: Entomophthoraceae) in Jeollabuk-do, Korea  

Choi, Seonu (Jeollabuk-do Agricultural Research and Extension Services)
Kim, Juhee (Jeollabuk-do Agricultural Research and Extension Services)
Seo, Kyoungwon (Jeollabuk-do Agricultural Research and Extension Services)
Moon, Younghun (Jeollabuk-do Agricultural Research and Extension Services)
Lee, Gongjun (Jeollabuk-do Agricultural Research and Extension Services)
Lee, Changkyu (Jeollabuk-do Agricultural Research and Extension Services)
Kim, Jaesu (Department of Agricultural Biology, College of Agriculture & Life Scinece, Chonbuk National University)
Kim, Jinho (Jeollabuk-do Agricultural Research and Extension Services)
Publication Information
Korean journal of applied entomology / v.56, no.2, 2017 , pp. 195-201 More about this Journal
Abstract
The entomopathogenic fungus Zoophthora radicans (Entomophthorales: Entomophthoraceae) was found to infect Cnaphalocrocis medinalis, Plutella xylostella, Myzus persicae and one unidentifed species. Samples of the fungus were collected from three areas (Jinan, Gimje, and Iksan) in Jeollabuk-do, Korea. Infected insects appeared in July and September, during which time population infection rate of Z. radicans on C. medinalis reached up to 46%. Zoophthora radicans hyphal bodies are rod-like to hyphoid, and primary conidia are bullet-shaped to long ovoid. The fungus was isolated from the surfaces of larvae and cultured in Sabouraud dextrose agar with yeast extract (SDAY). The optimal temperature range for mycelial growth was $20{\sim}28^{\circ}C$. Mycelium growth on SDAY supplemented with egg yolk and milk (SDAY-EM) was higher than on SDAY alone. Zoophthora radicans may play an important role in controlling insect population density using naturally induced epizootics.
Keywords
Cnaphalocrocis medinalis; Culture; Occurrence; Zoophthora radicans;
Citations & Related Records
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