NDLI: Genomic sequence analysis of a nucleopolyhedrovirus isolated from the diamondback moth, Plutella xylostella

Content Provider	Springer Nature Link
Author	Harrison, Robert L. Lynn, Dwight E.
Copyright Year	2007
Abstract	The CL3 plaque isolate of Plutella xylostella multiple nucleopolyhedrovirus (PlxyMNPV-CL3) exhibits a high degree of genetic similarity with the Autographa californica MNPV (AcMNPV) but is significantly more virulent against the diamondback moth, P. xylostella, than AcMNPV. To identify genetic differences between PlxyMNPV-CL3 and AcMNPV that may account for the difference in virulence against P. xylostella, the genome sequence of the CL3 plaque isolate of PlxyMNPV was determined and compared to the genome sequence of AcMNPV isolate C6. The PlxyMNPV genome is 134,417 bp, 523 bp larger than the AcMNPV-C6 genome, and the nucleotide sequence is almost completely co-linear with that of AcMNPV-C6. Of the 153 open reading frames (ORFs) identified in PlxyMNPV, 151 had homologues in AcMNPV-C6, with a mean amino acid sequence identity of 98.5%. The PlxyMNPV genome possessed two features previously reported for other variants of AcMNPV: (1) an extra baculovirus repeated orf (bro) sequence located between the plxy29/ac30 and sod ORFs, and (2) the deletion of the AcMNPV pnk/pnl polynucleotide kinase/ligase gene. In addition, an 817 bp insert of unknown origin located between the fp25K and lef-9 genes was discovered. This insert contained two small ORFs and was detected in both tissue culture- and larvae-derived PlxyMNPV DNA by PCR. Finally, the PlxyMNPV-CL3 ie-2 gene encodes a product with a low level (37.3%) of amino acid sequence identity with the AcMNPV-C6 ie-2 product. PlxyMNPV-CL3 apparently acquired this variant ie2 gene by recombination with an undescribed nucleopolyhedrovirus.
Starting Page	857
Ending Page	873
Page Count	17
File Format	PDF
ISSN	09208569
Journal	Virus Genes
Volume Number	35
Issue Number	3
e-ISSN	1572994X
Language	English
Publisher	Springer US
Publisher Date	2007-08-02
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Baculovirus Nucleopolyhedrovirus Plutella xylostella PlxyMNPV Autographa californica AcMNPV ie-2 Few polyhedra mutants Plant Sciences Virology Medical Microbiology
Content Type	Text
Resource Type	Article
Subject	Virology Genetics Medicine Molecular Biology

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