Screening of Entomopathogenic Fungal Culture Extracts with Honeybee Nosemosis Inhibitory Activity

This study aimed to select the most effective culture extracts for controlling honeybee nosemosis using 342 entomopathogenic fungi of 24 species from 18 genera. The germination inhibitory activity of the fungal culture extract on <i>Nosema ceranae</i> spores was evaluated using an in vit...

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Main Authors: Dong-Jun Kim, Ra-Mi Woo, Kyu-Seek Kim, Soo-Dong Woo
Format: Article
Language:English
Published: MDPI AG 2023-06-01
Series:Insects
Subjects:
Online Access:https://www.mdpi.com/2075-4450/14/6/538
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author Dong-Jun Kim
Ra-Mi Woo
Kyu-Seek Kim
Soo-Dong Woo
author_facet Dong-Jun Kim
Ra-Mi Woo
Kyu-Seek Kim
Soo-Dong Woo
author_sort Dong-Jun Kim
collection DOAJ
description This study aimed to select the most effective culture extracts for controlling honeybee nosemosis using 342 entomopathogenic fungi of 24 species from 18 genera. The germination inhibitory activity of the fungal culture extract on <i>Nosema ceranae</i> spores was evaluated using an in vitro germination assay method. Among 89 fungal culture extracts showing germination inhibitory activity of approximately 80% or more, 44 fungal culture extracts that maintained their inhibitory activity even at a concentration of 1% were selected. Finally, the honeybee nosemosis inhibitory activity was evaluated using the cultured extracts of five fungal isolates having a <i>Nosema</i> inhibitory activity of approximately 60% or more, even when the extract was removed after treatment. As a result, the proliferation of <i>Nosema</i> spores was reduced by all fungal culture extract treatments. However, only the treatment of the culture extracts from <i>Paecilomyces marquandii</i> 364 and <i>Pochonia bulbillosa</i> 60 showed a reduction in honeybee mortality due to nosemosis. In particular, the extracts of these two fungal isolates also increased the survival of honeybees.
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spelling doaj.art-1d73073f72954f62a32fe690e4b6f9652023-11-18T10:56:12ZengMDPI AGInsects2075-44502023-06-0114653810.3390/insects14060538Screening of Entomopathogenic Fungal Culture Extracts with Honeybee Nosemosis Inhibitory ActivityDong-Jun Kim0Ra-Mi Woo1Kyu-Seek Kim2Soo-Dong Woo3Department of Agricultural Biology, College of Agriculture, Life & Environment Science, Chungbuk National University, Cheongju 28644, Republic of KoreaDepartment of Agricultural Biology, College of Agriculture, Life & Environment Science, Chungbuk National University, Cheongju 28644, Republic of KoreaDepartment of Agricultural Biology, College of Agriculture, Life & Environment Science, Chungbuk National University, Cheongju 28644, Republic of KoreaDepartment of Agricultural Biology, College of Agriculture, Life & Environment Science, Chungbuk National University, Cheongju 28644, Republic of KoreaThis study aimed to select the most effective culture extracts for controlling honeybee nosemosis using 342 entomopathogenic fungi of 24 species from 18 genera. The germination inhibitory activity of the fungal culture extract on <i>Nosema ceranae</i> spores was evaluated using an in vitro germination assay method. Among 89 fungal culture extracts showing germination inhibitory activity of approximately 80% or more, 44 fungal culture extracts that maintained their inhibitory activity even at a concentration of 1% were selected. Finally, the honeybee nosemosis inhibitory activity was evaluated using the cultured extracts of five fungal isolates having a <i>Nosema</i> inhibitory activity of approximately 60% or more, even when the extract was removed after treatment. As a result, the proliferation of <i>Nosema</i> spores was reduced by all fungal culture extract treatments. However, only the treatment of the culture extracts from <i>Paecilomyces marquandii</i> 364 and <i>Pochonia bulbillosa</i> 60 showed a reduction in honeybee mortality due to nosemosis. In particular, the extracts of these two fungal isolates also increased the survival of honeybees.https://www.mdpi.com/2075-4450/14/6/538honeybeenosemosis<i>Nosema ceranae</i><i>Apis mellifera</i>entomopathogenic fungiculture extracts
spellingShingle Dong-Jun Kim
Ra-Mi Woo
Kyu-Seek Kim
Soo-Dong Woo
Screening of Entomopathogenic Fungal Culture Extracts with Honeybee Nosemosis Inhibitory Activity
Insects
honeybee
nosemosis
<i>Nosema ceranae</i>
<i>Apis mellifera</i>
entomopathogenic fungi
culture extracts
title Screening of Entomopathogenic Fungal Culture Extracts with Honeybee Nosemosis Inhibitory Activity
title_full Screening of Entomopathogenic Fungal Culture Extracts with Honeybee Nosemosis Inhibitory Activity
title_fullStr Screening of Entomopathogenic Fungal Culture Extracts with Honeybee Nosemosis Inhibitory Activity
title_full_unstemmed Screening of Entomopathogenic Fungal Culture Extracts with Honeybee Nosemosis Inhibitory Activity
title_short Screening of Entomopathogenic Fungal Culture Extracts with Honeybee Nosemosis Inhibitory Activity
title_sort screening of entomopathogenic fungal culture extracts with honeybee nosemosis inhibitory activity
topic honeybee
nosemosis
<i>Nosema ceranae</i>
<i>Apis mellifera</i>
entomopathogenic fungi
culture extracts
url https://www.mdpi.com/2075-4450/14/6/538
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