Abstract
White spot syndrome virus (WSSV), the sole member of the monotypic family Nimaviridae, is considered an extremely lethal shrimp pathogen. Despite its impact, some essential biological characteristics related to WSSV genome dynamics, such as the synonymous codon usage pattern and selection pressure in genes, remain to be elucidated. The results show that compositional limitations and mutational pressure determine the codon usage bias and base composition in WSSV. Furthermore, different forces of selective pressure are acting across various regions of the WSSV genome. Finally, this study points out the possible occurrence of two major recombination events.
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Acknowledgments
XMW thanks ShenYang Agricultural University for computational facilities. Part of this work was funded by the Consejo Nacional de Ciencia y Tecnología (CONACyT), México, for grant 102744 (to ASP). Thanks are also due to the supportive staff of the Laboratorio de Sanidad Acuícola (CIBNOR, Hermosillo), particularly to MVZ Fernando Mendoza, Daniel Coronado Molina and to Dr. Adriana Muhlia for careful reading and critical review of this manuscript.
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G. Sablok, A. Sánchez-Paz and X. Wu contributed equally to work.
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Sablok, G., Sánchez-Paz, A., Wu, X. et al. Genome dynamics in three different geographical isolates of white spot syndrome virus (WSSV). Arch Virol 157, 2357–2362 (2012). https://doi.org/10.1007/s00705-012-1395-7
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DOI: https://doi.org/10.1007/s00705-012-1395-7