期刊
JOURNAL OF FISH DISEASES
卷 31, 期 10, 页码 755-763出版社
WILEY-BLACKWELL
DOI: 10.1111/j.1365-2761.2008.00949.x
关键词
16S rRNA; bacterial kidney disease; diagnostics; real-time PCR; Renibacterium salmoninarum
资金
- Scientific Committee of the National Veterinary Institute.
Bacterial kidney disease (BKD), caused by Renibacterium salmoninarum (Rs), is a serious threat to salmon in aquaculture as well as to wild populations. We have developed a real-time polymerase chain reaction (PCR) for detection of Rs in kidney samples. The PCR is based on detection of unique parts of the 16S rRNA gene of Rs and DNA equivalent to 1-10 Rs genomes was detected per reaction. No cross-reactivity with other fish pathogenic or related bacteria could be demonstrated. Analysis of individual kidney samples collected from BKD classified populations identified 39.9% of the fish as positive by real-time PCR compared with 28.0% by polyclonal enzyme-linked immunosorbent assay (ELISA). The real-time PCR assay was found to be well suited for complementary use with ELISA for diagnosis of BKD, with the ability to detect clinical as well as covert Rs infections. The infection level determined by the polyclonal ELISA and by real-time PCR was significantly correlated.
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