Submitted: 08 Mar 2014
Revised: 11 May 2014
Accepted: 12 May 2014
First published online: 05 Oct 2016
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Int J Enteric Pathog. 2014;2(3): e18831.
doi: 10.17795/ijep18831
  Abstract View: 1378
  PDF Download: 932

Research Article

PCR-RFLP Analysis of a fliC Gene Fragment in Avian Salmonella Isolates

Zohreh Ebrahimvandi 1, Pejvak Khaki 2, Shole Darvishi 1, Soheila Moradi Bidhendi 2 *

1 Department of Microbiology, Science & Research Branch, Islamic Azad University, Kurdistan, IR Iran
2 Department of Microbiology, Razi Vaccine and Serum Research Institute, Karaj, IR Iran
*Corresponding author: Soheila Moradi Bidhendi, Department of Microbiology, Razi Vaccine and Serum Research Institute, P.O.Box: 3197619751, Karaj, IR Iran. Tel: +98-2634570038, Fax: +98-2634552194, E-mail:, Email:


Background: Salmonella are a genus of zoonotic bacteria of worldwide economic and health importance. Members of Salmonella enterica subspecies enterica are mainly associated with warm-blooded vertebrates and are usually transmitted by ingestion of food or watercontaminated by infected feces.

Objectives: The aim of this study was to apply a PCR-RFLP method based on the fliC gene to identify the serotypes of Salmonella isolates from Karaj, Iran.

Materials and Methods: A total of 30 Salmonella isolates were serotyped by specific antisera. For the PCR-RFLP method based on the fliC gene, extracted DNA was used as the template for amplifying the fliC gene (1500 bp) using specific primers. PCR products were subjected to digestion using HhaI restriction endonuclease.

Results: This study determined 30 serotypes as Salmonella durban (56.6%), Salmonella uno (23.3%), Salmonella enteritidis (3.3%), Salmonella tinda (3.3%), Salmonella mjimweme (3.3%), Salmonella Thompson (3.3%), Salmonella sIIO8 (3.3 %) and Salmonella sIIO7 (3.3%). Observations indicated that HhaI is able to discriminate Salmonella tinda and Salmonella thompson, yet Salmonella enteritidis, Salmonella durban and Salmonella mjimweme had the same pattern with this enzyme. Also Salmonella sIIO8, Salmonella sIIO7 and Salmonella uno showed the same pattern. Thus, regarding the size and the number of resulting fragments from this enzyme, four patterns were obtained for HhaI.

Conclusion: A large number of Salmonella serotypes need to be analyzed by the PCR-RFLP method and different enzymes must be used to give reliable results.

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