4.5 Article

Development of a two-step, non-probed multiplex real- time PCR for surveilling Vibrio anguillarum in seawater

期刊

JOURNAL OF FISH DISEASES
卷 38, 期 6, 页码 551-559

出版社

WILEY
DOI: 10.1111/jfd.12264

关键词

non-probed multiplex qPCR; seawater; thermal factors; Vibrio anguillarum; vibriosis

资金

  1. USDA National Institute of Food and Agriculture [2011-38821-30923]

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Vibrio anguillarum is an aggressive and halophilic bacterial pathogen most commonly originating from seawater. Vibrio anguillarum presence in fisheries and aquaculture facilities causes significant morbidity and mortality among aquaculture species primarily from haemorrhaging of the body and skin of the infected fish that eventually leads to death, collectively recognized as the disease vibriosis. This study served to develop a non-probe, multiplex real-time PCR assay to rapidly detect V.anguillarum presence in seawater. Specific primers targeting genes vah1, empA and rpoN of V.anguillarum were selected for multiplex reaction among 11 different primer sets and the extension step was eliminated. Primer concentration, denaturation time as well as annealing time and temperature of DNA amplification were optimized, thus reducing reaction duration. The two-step, non-probed multiplex real-time PCR set forth by this study detects as little as 3CFUmL(-1) of V.anguillarum presence in sea water, without enrichment cultivation, in 70min with molecular precision and includes melting curve confirmation.

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