The complete sequence of the Australia recognizate of Macrobrachium rosenbergii nodavirus which causes white tail disease

Hayakijkosol, Orachun, Burgess, Graham, La Fauce, Kathy, and Owens, Leigh (2012) The complete sequence of the Australia recognizate of Macrobrachium rosenbergii nodavirus which causes white tail disease. Aquaculture, 366-367. pp. 98-104.

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Abstract

White tail disease (WTD) caused by Macrobrachium rosenbergii nodavirus (MrNV) has been found in the giant freshwater prawn (Macrobrachium rosenbergii) and has recently been the cause of high mortalities in many countries such as India, China, Taiwan and Thailand. In mid 2004, the index case of WTD in Australia presented in adult broodstock M. rosenbergii from Flinders River in western Queensland. In order to understand the phylogenetic relationship of the Australian recognizate of MrNV to other MrNV recognizates, the complete sequences of the Australian MrNV (RNA1 and RNA2) were determined. Nucleotide and phylogenetic analysis revealed that the Australian strain of MrNV (RNA1) was between 94% and 97% identical to Malaysian, the French West Indies, Chinese and the Thai recognizates. Also, the nucleotide sequence of the Australian MrNV (RNA2) was 92% identical to the French West Indies, Chinese and the Thai recognizates. The nucleotide comparison of protein B2 showed a different relationship between MrNV and fish nodaviruses. However, the phylogenetic tree of protein B2 determined that some fish nodaviruses are closely related to insect nodavirus. These results can be used to develop effective diagnostic tests and design specific RNA interference (RNAi) against protein B2 to control other nodaviruses in the future.

Item ID: 24548
Item Type: Article (Refereed Research - C1)
Keywords: white tail disease (WTD), Macrobrachium rosenbergii nodavirus (MrNV), the Australian recognizate of MrNV, protein B2, complete sequence
ISSN: 1873-5622
Date Deposited: 09 Jan 2013 05:38
FoR Codes: 07 AGRICULTURAL AND VETERINARY SCIENCES > 0704 Fisheries Sciences > 070404 Fish Pests and Diseases @ 50%
06 BIOLOGICAL SCIENCES > 0605 Microbiology > 060506 Virology @ 50%
SEO Codes: 83 ANIMAL PRODUCTION AND ANIMAL PRIMARY PRODUCTS > 8301 Fisheries - Aquaculture > 830101 Aquaculture Crustaceans (excl. Rock Lobster and Prawns) @ 100%
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