PCR cloning and partial sequencing of rtxA gene of non-O1 / non-O139 Vibrio cholerae isolated from gold fish Carassius auratus in India


Citation

Rathore Gaurav, . and Sood Neeraj, . and Abidi Rehana, . and Lakra W. S., . and Swaminathan T. Raja, . PCR cloning and partial sequencing of rtxA gene of non-O1 / non-O139 Vibrio cholerae isolated from gold fish Carassius auratus in India. pp. 707-712. ISSN 0116-6514

Abstract

A total of 16 non-O1/ non-O139 Vibrio cholerae isolates were obtained from ornamental fish collected from aquarium traders located in four metro cities of India. All the isolates were confirmed by amplifying the 300 bp fragment in the 16S-23S rRNA intergenic spacer regions. Amplification of 431 bp fragment of gene which resulted in detectable levels of PCR product was achieved with a minimum of 8 CFU/ml of V. cholerae. The detection limit for rtxA gene by PCR amplification of genomic DNA was 20 picogram. A 431 bp fragment of the rtxA gene of V. cholerae was cloned and sequenced (NCBI accession number EU714289). Nucleotide sequence analysis data of the rtxA gene showed that about 96 identical to those of V. cholerae RTX toxin gene cluster.


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Abstract

A total of 16 non-O1/ non-O139 Vibrio cholerae isolates were obtained from ornamental fish collected from aquarium traders located in four metro cities of India. All the isolates were confirmed by amplifying the 300 bp fragment in the 16S-23S rRNA intergenic spacer regions. Amplification of 431 bp fragment of gene which resulted in detectable levels of PCR product was achieved with a minimum of 8 CFU/ml of V. cholerae. The detection limit for rtxA gene by PCR amplification of genomic DNA was 20 picogram. A 431 bp fragment of the rtxA gene of V. cholerae was cloned and sequenced (NCBI accession number EU714289). Nucleotide sequence analysis data of the rtxA gene showed that about 96 identical to those of V. cholerae RTX toxin gene cluster.

Additional Metadata

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Item Type: Article
AGROVOC Term: Vibrio
AGROVOC Term: Vibrio cholerae
AGROVOC Term: Carassius auratus
AGROVOC Term: Goldfish
AGROVOC Term: Isolation
AGROVOC Term: Identification
AGROVOC Term: Cloning
AGROVOC Term: DNA
AGROVOC Term: DNA sequence
AGROVOC Term: Gel electrophoresis
Depositing User: Mr. AFANDI ABDUL MALEK
Last Modified: 24 Apr 2025 00:53
URI: http://webagris.upm.edu.my/id/eprint/7926

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