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http://dx.doi.org/10.5352/JLS.2017.27.1.67

Identification of Diagnostic PCR Markers for Honeybee Foulbrood Disease from Specific Genes of Paenibacillus larvae  

Na, Han-Heom (Department of Biological Sciences, College of Natural Sciences, Kangwon National University)
Kim, Keun-Cheol (Department of Biological Sciences, College of Natural Sciences, Kangwon National University)
Publication Information
Journal of Life Science / v.27, no.1, 2017 , pp. 67-71 More about this Journal
Abstract
Foulbrood disease is infected by Paenibacillus larvae on larval stage of honeybee, and is lethal disease to result in population death. This disease was manifested in 2008 in Korea, is still suffered by the secondary damages. In this study, we are to examine diagnostic PCR approaches to manage the Foulbrood disease. PCR amplification of 16S rRNA is generally using for microbial infection, but the specificity is little poor for the correct diagnosis. Therefore, we are to identify specific genes expressed in Paenibacillus larvae, and perform PCR analysis. We selected five distinct genes from literature references. Those genes are commonly known as toxic genes for host infection, and include Toxin1, Toxin2A & 2B, SplA, CBP49, and SevA&SevB. PCR amplification for these genes is difficult to detect at the first time. So, we performed the second PCR using the first PCR product as a template. This approach using the nested PCR was very useful for detecting large marker genes. When Paenibacillus larvae was cultured in the medium containing plant extracts, PCR amplification of the identified genes is correlated with the microbial growth inhibition. Therefore, these results suggest that the identified genes might be useful to study diagnostic PCR markers for honeybee Foulbrood disease.
Keywords
Diagnosis; Foulbrood disease; markers; Paenibacillus larvae;
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