The genome of Dasychira pudibunda nucleopolyhedrovirus DapuNPV reveals novel genetic connection between baculoviruses infecting moths of the Lymantriidae familyReportar como inadecuado




The genome of Dasychira pudibunda nucleopolyhedrovirus DapuNPV reveals novel genetic connection between baculoviruses infecting moths of the Lymantriidae family - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

BMC Genomics

, 16:759

Eukaryote microbial genomics

Abstract

BackgroundDapuNPV Dasychira pudibunda nucleopolyhedrovirus, presented in this report, belongs to Alphabaculovirus group Ib. Its full, newly sequenced genome shows close relationship to baculovirus OpMNPV isolated from douglas-fir tussock moth Orgyia pseudotsugata. Baculovirus DapuNPV is a natural limiter of pale tussock moth Dasychira pudibunda L. syn. Calliteara pudibunda L.Lepidoptera, Lymantriidae, which can occur in a form of an outbreak on many species of deciduous trees and may cause significant economic losses in the forests.

MethodsLate instars dead larvae of pale tussock moth were mechanically homogenized and polyhedra were purified during series of ultracentrifugation. Viral DNA was extarcted and sequenced using Miseq Illumina platform. 294,902 paired reads were used for de novo assembling. Genome annotation, multiple allingment to others baculoviruses and phylogegentic analises were perform with the use of multiple bioinformatic tools like: Glimmer3, HMMER web server, Geneious 7 and MEGA6.

ResultsThe genome of DapuNPV is 136,761 bp long with AT pairs content 45.6 %. The predicted number of encoded putative open reading frames ORFs is 161 and six of them demonstrate low or no homology to ORFs previously found in baculoviruses. DapuNPV genome shows very high similarity to OpMNPV in a nucleotide sequence 91.1 % of identity and gene content 150 homologous ORFs, though some major differences e.g. lack of he65 in OpMNPV have also been noted.

ConclusionsSimilarly to other members of the Baculoviridae family, DapuNPV baculovirus possesses highly conserved core genes. Among them, there is a second copy of occluded derived virus envelope 27 protein odv-e27, which was previously found only in a member of Alphabaculovirus group II – LyxyMNPV Lymantria xylina MNPV. Surprisingly enough, DapuNPV and LyxyMNPV genomes share also another feature. Phylogenetic analysis of chitin binding family protein cbpl indicates significant similarity of those two baculoviruses from distinct evolutionary groups which infect the same hosts from Lymantriidae. The ubiquitin like family gene ubil, which has not been described until now, is another characteristic component of DapuNPV genome.

KeywordsBaculovirus Next generation sequencing DapuNPV Pale tussock moth Dasychira pudibunda OpMNPV Electronic supplementary materialThe online version of this article doi:10.1186-s12864-015-1963-9 contains supplementary material, which is available to authorized users.

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Autor: Martyna Krejmer - Iwona Skrzecz - Bartosz Wasag - Boguslaw Szewczyk - Lukasz Rabalski

Fuente: https://link.springer.com/







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