Abstract
Laem Singh virus (LSNV) was discovered in 2006 and proposed as a necessary but insufficient cause of retarded growth in the giant tiger shrimp Penaeus monodon. Its closest relatives were plant viruses including an unassigned Sobemovirus and viruses in the family Luteoviridae. During succeeding years, attempts to obtain the full LSNV genome sequence by genome walking failed. However, recent publication of the full sequence of Wenzhou shrimp virus 9 (WZSV 9) at GenBank revealed that LSNV sequences in our database shared 99% sequence identity with it. Thus, we hypothesized that LSNV and WZSV 9 were different isolates of the same virus species. Here we confirm that hypothesis by cloning and sequencing of the full genome of LSNV from P. monodon and by showing that it consists of two fragments each with 99% identity to the matching fragments of WZSV.
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