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KMID : 0880220090470020208
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Journal of Microbiology
2009 Volume.47 No. 2 p.208 ~ p.213
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Characterization of a Baculovirus Newly Isolated from the Tea Slug Moth, Iragoidae fasciata
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Yang Li-Rong
Zhang Chuan-Xi
Qiang Xiao
Tang Mei-Jun
Zhang Bao-Qin
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Abstract
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The tea slug moth Iragoidae fasciata (Lepidoptera, Eucleidae) is one of the main insect pests that attack tea bushes. A new nucleopolyhedrovirus (NPV) called Iragoidae fasciata NPV (IrfaNPV) was recently isolated from diseased larvae. An 11,626 bp fragment of the viral genomic DNA containing the polyhedrin gene and other 12 genes was cloned and sequenced. Gene comparison and phylogenetic analysis showed that IrfaNPV is a member of the Group I NPVs. However, the genomic organization of IrfaNPV is highly distinct. In addition, electron microscopy analysis showed that IrfaNPV is a single nucleocapsid NPV (SNPV). An inoculation assay showed that IrfaNPV is semi-permissive in the Trichoplusia ni cell line Tn-5B1-4. Bioassays on lethal concentration (LC50) and lethal time (LT50) were conducted to test the susceptibility of I. fasciata larvae to the virus.
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KEYWORD
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Iragoidae fasciata, nucleopolyhedrovirus, SNPV, polyhedrin region, phylogeny, permissive cell line
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