Characterization of variable genomic regions of Indian white spot syndrome virus

被引：50

作者：

Pradeep, Balakrishnan ^{[1
]}

Shekar, Malathi ^{[1
]}

Karunasagar, Iddya ^{[1
]}

Karunasagar, Indrani ^{[1
]}

机构：

[1] Karnataka Vet Anim & Fisheries Sci Univ, Coll Fisheries, Dept Fishery Microbiol, Mangalore 575002, India

来源：

VIROLOGY | 2008年 / 376卷 / 01期

关键词：

WSSV; genomic characterization; evolution; ORF; 23/24; ORF14/15; transposase;

D O I：

10.1016/j.virol.2008.02.037

中图分类号：

Q93 [微生物学];

学科分类号：

071005 ; 100705 ;

摘要：

A recent study examining genetic variations among the 3 completely sequenced white spot syndrome virus (WSSV) genomes isolated from China, Thailand and Taiwan revealed five major differences among them. Of these differences, a deletion region between ORF 23/24 and a variable region of ORF14/15 prone to recombination were of particular evolutionary significance. Focusing on these regions, 81 WSSV isolates from India were characterized by sequencing polymerase chain reaction (PCR) amplicons. The Indian strains carried a 10,970 bp deletion in the ORF 23/24 region relative to WSSV-TW and WSSV-TH-96-II. Analysis of the ORF 14/15 regions revealed two novel strains of WSSV with unique sequences which could have evolved by recombination. None of the WSSV isolates had a transposase sequence or VP35 gene as reported for Taiwan isolates. The Indian strains were closely related to Thailand strains suggesting movement of a putative ancestor from Thailand to other parts of the world including India. (c) 2008 Elsevier Inc. All rights reserved.

引用

页码：24 / 30

页数：7

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