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  • Title: Molecular fingerprinting of Vibrio tapetis strains using three PCR-based methods: ERIC-PCR, REP-PCR and RAPD.
    Author: Rodríguez JM, López-Romalde S, Beaz R, Alonso MC, Castro D, Romalde JL.
    Journal: Dis Aquat Organ; 2006 Apr 06; 69(2-3):175-83. PubMed ID: 16724561.
    Abstract:
    Brown Ring Disease (BRD) is a bacterial disease caused by Vibrio tapetis which affects cultured clams and causes heavy economic losses. In this study, 28 V. tapetis strains isolated from 5 different hosts were intraspecifically characterized by 3 different polymerase chain reaction- (PCR-) based typing methods: enterobacteria repetitive intergenic consensus (ERIC)-PCR, repetitive extragenic palindromic (REP)-PCR and randomly amplified polymorphic DNA (RAPD)-PCR. Cluster analysis of genetic profiles obtained from these molecular techniques clearly showed the existence of 3 genetic groups strongly correlated to the host origin. The first group was formed by 23 V. tapetis strains isolated from Manila clam Ruditapes philippinarum, 1 isolated from venus clam Venerupis aurea, and 1 isolated from common cockle Cerastoderma edule, all collected from France and Spain. The second group was formed by 2 strains isolated from carpet-shell clam R. decussatus cultured in the northwest of Spain. The third group was composed of 1 strain isolated from Atlantic halibut Hippoglossus hippoglossus from the UK. We concluded that the 3 typing methods based on PCR were useful for the intraspecific typing of V. tapetis strains, and that they can potentially be used as a fast and reliable tool for epidemiological studies in the future.
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