development of pcr method for diagnosing of honey bee american foulbrood disease

american foulbrood (afb) disease is caused by the sporeforming bacterium paenibacillus larvae larvae. traditional diagnosis is based on culture technique is time and laboratory work consuming. in this study with standard strain, pcr was developed by specific primers and pcr products were electrophoresed on 0.8 % agarose gel. the pcr primers were selected on the basis of the 16s rrna gene and amplify a 700-bp amplicon. detection limits were determined for suspensions of bacteria and spores and also honey and larvae experimentally contaminated. the lowest number of bacteria and spores that were able to detect were respectively 28, 33, 330 and 243 cfu /ml. this pcr technique can be used to identification of the presence of paenibacillus larvae larvae spores in honey samples, brood samples or on the colonies that grow on medium.