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Isolation, characterization, and genetic diversity of Paenibacillus larvae from AFB suspected specimens in the Central and Eastern Black Sea Regions

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Abstract

American foulbrood is an important bacterial disease affecting the larvae of honey bees (Apis mellifera L.) caused by Paenibacillus larvae. Due to easy transmission of disease and the ability of bacteria to create spores, it is a bacterium resistant to both physical and chemical conditions. The study aims to isolate, perform microbiological analyses, and determine biochemical properties and genotypes P. larvae strains from AFB samples collected from Turkey's Central and Eastern Black Sea regions. An isolation study was conducted on adult bees, larvae, honey, and primary honeycomb samples from suspected colonies in the regions under study. After the purification of bacterial isolates from samples, P. larvae strains were identified using biochemical and molecular methods. The genetic diversity and ERIC types of P. larvae isolates were determined by rep-PCR DNA genotyping using BOX A1R and MBO REP1 primers and multiplex-PCR. A phylogenetic tree of P. larvae strains was constructed in the study. All P. larvae isolates were determined as ERIC I type. According to the rep-PCR results of P. larvae strains, 15 of the 28 isolates were Ab genotype (54%), 7 (25%) Aβ genotype, 4 (14%) AB genotype, 1 (3.5%) αB genotype, and 1 (3.5%) ab genotype. From an epidemiological viewpoint, it was determined that Ab and Aβ genotypes were widely distributed, while other genotypes (AB, αB, and ab) showed less spread. The results of the study will guide researchers in taking relevant measures to prevent and control American foulbrood.

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Data Availability

Datasets used in this study will be made available by the corresponding author with no hesitation upon genuine request.

Abbreviations

AFB:

American foulbrood

PFGE:

Pulsed-field gel electrophoresis

RFLP:

Restriction fragment length polymorphic DNA analysis

RAPD:

Random amplified polymorphic DNA assay

AP-PCR:

Arbitrary primed PCR

AFLP:

Amplified fragment length polymorphism

Rep-PCR:

Repetitive element based PCR

ERIC:

Enterobacterial repetitive intergenic consensus sequence

NCBI:

National Center for Biotechnology Information

BLAST:

Basic Local Alignment Search Tool

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Funding

This study was financially funded by the Scientific Research Funding of the Recep Tayyip Erdogan University (Project Number: RTEU-BAP 2015.53001.102.03.04).

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Authors

Contributions

Şengül Alpay Karaoglu: designed the experiments, analyzed the data, completed the final version manuscript, and provided funding acquisition. Arif Bozdeveci: performed the experiments, analyzed the data, and revised the final version of the manuscript. Müberra Pınarbaş Çetin: analyzed data and performed the experiments. Elif Sevim: designed the experiments, and performed the experiments. Şeyma Suyabatmaz: analyzed data and wrote the draft version of the manuscript. Rahşan Akpınar: collected sample materials and participated in the experiments. All authors have reviewed and approved the final version of the manuscript.

Corresponding author

Correspondence to Şengül Alpay Karaoğlu.

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Alpay Karaoğlu, Ş., Bozdeveci, A., Pinarbaş Çetin, M. et al. Isolation, characterization, and genetic diversity of Paenibacillus larvae from AFB suspected specimens in the Central and Eastern Black Sea Regions. Biologia 78, 2919–2929 (2023). https://doi.org/10.1007/s11756-023-01448-w

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  • DOI: https://doi.org/10.1007/s11756-023-01448-w

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