1887

Abstract

The infectious hypodermal and haematopoietic necrosis virus (IHHNV), pathogenic for penaeid shrimp, is an icosahedral unenveloped particle, 22 nm in diameter, with an ssDNA linear genome, and proposed to be a member of the Parvoviridae. A large majority of minus-strand DNA is incorporated into the capsids compared to the plus-strand. A small amount of reannealed plus- and minus-strands (dsDNA) obtained after nucleic acid extraction was blunt-ended and cloned into the system pUC18/ strain DH5α. Selected clones were studied and characterized using restriction enzymes. One of them, BQ31, was used to construct different sized probes labelled with digoxigenin-11-dUTP. These probes failed to hybridize with DNA of some insect parvoviruses and with DNA of a parvo-like virus of shrimp. They reacted strongly with dilutions of homogenized IHHNV-infected shrimp tissues and, conversely, did not react with uninfected shrimp tissues. They hybridized , in sections of infected animals, labelling strongly the target cells and particularly the nuclear Cowdry type A inclusion body, which is the most diagnostic characteristic of this disease.

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/content/journal/jgv/10.1099/0022-1317-74-12-2637
1993-12-01
2019-11-20
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http://instance.metastore.ingenta.com/content/journal/jgv/10.1099/0022-1317-74-12-2637
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