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Differential Expression of Immune-Related Genes in Larval and Adult Apis mellifera Honeybees Challenged with Korean Sacbrood Virus
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Type
Academic journal
Author
Mi-Sun Yoo (Animal and Plant Quarantine Agency) Ha-Na Jung (Animal and Plant Quarantine Agency) Thi Bich Thao Le (Vietnam Academy of Science and Technology) Young-Ha Kim (Animal and Plant Quarantine Agency) Nam-Hee Kim (Animal and Plant Quarantine Agency) Kondreddy Eswar Reddy (Animal and Plant Quarantine Agency)
Journal
The Apicultural Society of Korea Journal of Apiculture Vol.30 No.1 April 2015 KCI Accredited Journals
Published
2015.4
Pages
21 - 30 (10page)
DOI
10.17519/apiculture.2015.04.30.1.21

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Differential Expression of Immune-Related Genes in Larval and Adult Apis mellifera Honeybees Challenged with Korean Sacbrood Virus
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Recently, the Korean sacbrood virus (KSBV) caused great loss of honeybee colonies in Korean Apis mellifera. Three antimicrobial peptide genes (AMPs) (abaecin (ABA), defensin (DEF) and hymenoptaecin (HYM)) and two immune-related enzyme genes (phenol-oxidase (PO) and lysozyme (LYS)) were investigated using qRT-PCR as a measure of the defense reactions of honeybee larvae and adults challenged with KSBV in vitro. Transcript levels of three AMPs were upregulated in adults exposed to KSBV, compared to control adults. ABA and DEF transcripts were 22.7 and 21.9 fold higher (P<0.05), respectively, after 24h exposure while HYM transcript did not change significantly. At this time point, PO and LYS mRNA levels were 18.08 and 16.03 fold higher, respectively, in KSBVinfected adult bees compared to control adults (P<0.05). By contrast, the larvae infected with KSBV had downregulated expression of AMPs and slight up-regulation of PO and LYS compared to the controls. These results suggest that the differential expression of the genes studied could indicate their involvement in defense processes against KSBV in adult and larva bees.
#Honeybees #Apis mellifera (A. mellifera) #Korean sacbrood virus (KSBV) #Immune-relatedgenes #Antimicrobial peptide genes (AMPs)

Contents

Abstract
INTRODUCTION
MATERIALS AND METHODS
RESULTS
DISCUSSION
LITERATURE CITED

References (42)

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Allen, M. / 1996 / The incidence and world distribution of honey bee viruses / Bee World 77:141~162 google schola Antunez, K. / 2009 / Immune suppression in the honey bee (Apis mellifera) following infection by Nosema ceranae (microsporidia) / Enviromental Microbiology 11:2284~2290 google schola Aupinel, P. / 2005 / Improvement of artificial feeding in a standard in vitro method for rearing Apis mellifera larvae / Bulletin of Insectology 58:107~111 google schola Azzami, K. / 2012 / Infection of honey bees with acute bee paralysis virus does not trigger humoral or cellular immune responses / Arch. Virol 157:689~702 google schola Bachali, S. / 2002 / Phylogenetic analysis of invertebrate lysozymes and the evolution of lysozyme function / J. Mol. Evol 54:652~664 google schola

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