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Insect Viruses (7):
Recent article
Insect Viruses
Abstract
I NPV. In this work, key infection kinetic parameters of the Group II NPV Helicoverpa armigera nucleopolyhedrovirus (HaSNPV), and its Few Polyhedra (FP) mutant, were well characterized for the first time, in suspension HzAM1 insect cell cultures, to facilitate the scale-up of an HaSNPV-based biopest...
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PMID: 21644255
PDF is available here.
PDF is available here.
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Abstract
The housefly, Musca domestica, is a cosmopolitan pest of livestock and poultry and is of economic, veterinary, and public health importance. Populations of M. domestica are naturally infected with M. domestica salivary gland hypertrophy virus (MdSGHV), a nonoccluded double-stranded DNA virus that in...
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PMID: 20023109
PDF is available here.
PDF is available here.
Journal of Virology (84)3 2010
Abstract
We examined the role of temperature on the growth of cricket paralysis virus, a member of the family Dicistroviridae, in insect cells. Heat shock caused an induction of heat shock protein-encoding mRNAs in uninfected cells but not in infected cells. While viral RNA and protein were abundant during h...
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PMID: 19906924
PDF is available here.
PDF is available here.
Abstract
We report here genome sequences and comparative analyses of three closely related parasitoid wasps: Nasonia vitripennis, N. giraulti, and N. longicornis. Parasitoids are important regulators of arthropod populations, including major agricultural pests and disease vectors, and Nasonia is an emerging...
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PMID: 20075255
PDF is available here.
PDF is available here.
Parasitology (85 (Pt 2))02 2009
Abstract
Abstract
All 42 viruses were isolated, which caused CPEs on C6/36 but not on Vero cells. 27 viruses showed similar genomic profiles with 12 dsRNA segments. 1 virus displayed genomic profile with 10 dsRNA segments. 5 viruses took on similar genomic profiles with about 4 kbp DNA band. 9 viruses did not get any...
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PMID: 19534993
PDF is available here.
PDF is available here.
Journal of General Virology (90)Pt 5 2009
Abstract
The Musca domestica salivary gland hypertrophy virus (MdSGHV) is a large dsDNA virus that infects and sterilizes adult houseflies. The transcriptome of this newly described virus was analysed by rapid amplification of cDNA 3'-ends (3'-RACE) and RT-PCR. Direct sequencing of 3'-RACE products revealed...
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PMID: 19264592
PDF is available here.
PDF is available here.
Virus Research (139)2 2009
Abstract
We describe the characteristics of dicistroviruses, including the RNA elements and viral proteins....
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PMID: 18621089
PDF is available here.
PDF is available here.
Archives of Virology (154)5 2009
Abstract
We describe here the isolation and characterization of a new mosquito-only flavivirus in this group. The virus was isolated from Culex tritaeniorhyncus mosquitoes collected in Vietnam in 2002 and was found to be genetically different from mosquito flaviviruses described previously. We propose the is...
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PMID: 19347244
PDF is available here.
PDF is available here.
Journal of Virology (83)2 2009
Abstract
We show that the particle size becomes smaller under conditions between pH 6.8 and 6.0 without activating cleavage and that the particle remains at an intermediate size when the pH is carefully maintained. At pH 5.8, cleavage is very slow, becoming detectable only after 9 h. The optimum pH for cleav...
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PMID: 18987141
PDF is available here.
PDF is available here.
Journal of General Virology (89)Pt 12 2008
Abstract
Comparisons of the relative activities of 11 intergenic region (IGR) internal ribosome entry site (IRES) elements of insect dicistrovirus with 5' IRES elements of the hepatitis C and encephalomyocarditis viruses were performed in insect and mammalian cells. Dual luciferase assays were performed to d...
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PMID: 19008405
PDF is available here.
PDF is available here.
Abstract
Bee samples were collected in French apiaries that displayed severe losses and mortality during the winter (from November 2007 to March 2008). They were screened for the presence of Israeli acute paralysis virus (IAPV) by using RT-PCR. Five out of 35 surveyed apiaries, located in two different geogr...
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PMID: 18703069
PDF is available here.
PDF is available here.
New Microbiologica (31)4 2008
Abstract
Iflavirus RNA was detected in honeybee colonies displaying unduly aggressive behavior and with no evidence of morphological alterations. Sequence analysis of the RNA-dependent RNA polymerase (RdRp) revealed that the iflavirus strain was more similar (> 99% aa) to Deformed Wing Virus (DWV), that has...
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PMID: 19123297
PDF is available here.
PDF is available here.
Abstract
I NPVs from A. californica, Anagrapha falcifera, Anticarsia gemmatalis, Galleria mellonella, Helicoverpa armigera, Plutella xylostella, and Rachiplusia ou, with large numbers of occlusion bodies produced in most of the inoculated cells. The cell lines did not support the replication of group II NPVs...
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PMID: 18395741
PDF is available here.
PDF is available here.
Abstract
We also developed and validated a multiplex RT-PCR assay for the simultaneous detection of ABPV, BQCV, and DWV in Brazil....
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PMID: 18471826
PDF is available here.
PDF is available here.
Journal of Virology (82)18 2008
Abstract
We report the identification of the first miRNA from an insect virus, derived from the major capsid protein (MCP) gene in Heliothis virescens ascovirus (HvAV) (HvAV-miR-1). Although MCP was abundantly expressed at all time points 24 h after infection, HvAV-miR-1 expression was strictly regulated and...
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PMID: 18614632
PDF is available here.
PDF is available here.
Abstract
The genome of the virus that causes salivary gland hypertrophy in Musca domestica (MdSGHV) was sequenced. This non-classified, enveloped, double stranded, circular DNA virus had a 124,279bp genome. The G + C content was 43.5% with 108 putative methionine-initiated open reading frames (ORFs). Thirty...
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PMID: 18495197
PDF is available here.
PDF is available here.
Virus Research (135)1 2008
Abstract
A reovirus was isolated from Operophtera brumata (ObRV) and its parasitoid wasp Phobocampe tempestiva. Each of the 10 dsRNA genome segments of ObRV was sequenced and shown to contain a single open reading frame (ORF). Conserved motifs ([+ve] 5'-AAATAAA ...(G)/(T)AGGTT-3') were found at the termini o...
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PMID: 18405997
PDF is available here.
PDF is available here.
Abstract
We demonstrated baculovirus-driven expression of a cloned Rhopalosiphum padi virus (RhPV; Dicistroviridae) genome that was infectious to aphids, and we identified a cell line (GWSS-Z10) from the glassy-winged sharpshooter, that supports RhPV replication. Here we report that RNA transcribed from a fu...
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PMID: 18339417
PDF is available here.
PDF is available here.
Abstract
Deformed wing virus (DWV) infected semen was used for artificial insemination of DWV-free virgin queens. High titres of DWV could subsequently be detected not only in the spermatheca, but also in the ovaries, demonstrating venereal transmission of DWV in honey bees. Subsequent vertical transmission...
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PMID: 18358488
PDF is available here.
PDF is available here.
Abstract
A survey on the occurrence of six honeybee-pathogenic viruses was carried out using one-step RT-PCR assays. Samples were collected between 1999 and 2004 in 52 Hungarian apiaries located in different regions of the country. The results of the assays on samples of adult honeybees and Varroa destructor...
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PMID: 18155230
PDF is available here.
PDF is available here.
Abstract
Quantitative real-time PCR (QPCR) was used to quantify the genome of Solenopsis invicta virus-2 (SINV-2) from infected individual ants of S. invicta. Strand-specific cDNA synthesis oligonucleotide primers and RNase digestion after cDNA synthesis allowed quantification of plus (genomic) and minus (re...
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PMID: 18343402
PDF is available here.
PDF is available here.
Journal of General Virology (89)Pt 6 2008
Abstract
We used the Jak-STAT regulated genes as reporter genes. Challenge of flies with non-infectious DCV particles or double-stranded RNA did not stimulate significant upregulation of the antiviral response genes. In addition, there was no difference in reporter gene upregulation between Drosophila challe...
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PMID: 18474566
PDF is available here.
PDF is available here.
Abstract
Viruses of the European honeybee, Apis mellifera L. are known to reside at low levels in colonies, typically showing no apparent signs of infection. Using reverse transcription-PCR (RT-PCR), 23 apiaries in Devon were screened for the presence of 6 honeybee viruses, with positive colonies being analy...
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PMID: 18359042
PDF is available here.
PDF is available here.
Virus Research (133)2 2008
Abstract
These results suggest a new way by which the infection may be spread and other sites of viral persistence in the close apiary environment....
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PMID: 18243390
PDF is available here.
PDF is available here.
Journal of Virology (82)9 2008
Abstract
We sequenced and analyzed its genome. The GpSGHV genome is a double-stranded circular DNA molecule of 190,032 bp containing 160 nonoverlapping open reading frames (ORFs), which are distributed equally on both strands with a gene density of one per 1.2 kb. It has a high A+T content of 72%. About 3% o...
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PMID: 18272583
PDF is available here.
PDF is available here.
Abstract
We considered a viral lectin previously known in other Cotesia species as a humoral immunosuppressive candidate in C. plutellae parasitization. Based on consensus regions of the viral lectins, the corresponding lectin gene was cloned from P. xylostella parasitized by C. plutellae. Its cDNA is 674 bp...
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PMID: 18325805
PDF is available here.
PDF is available here.
Insect Molecular Biology (17)2 2008
Abstract
Aiming to contribute to the knowledge of the evolutionary history of Errantivirus, a phylogenetic analysis of the env gene sequences of Errantivirus gypsy, gtwin, gypsy2, gypsy3, gypsy4 and gypsy6 was carried out in 33 Drosophilidae species. Most sequences were obtained from in silico searches in th...
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PMID: 18353101
PDF is available here.
PDF is available here.
Virus Research (132)1-2 2008
Abstract
The complete sequences of the two major RNAs of Chronic bee paralysis virus (CBPV) have been determined. RNA 1 (3674nt long) and RNA 2 (2305nt long) are positive single-stranded RNAs that are capped but not polyadenylated. The 3' ends of both RNAs are unreactive to polymerisation or ligation even in...
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PMID: 18079012
PDF is available here.
PDF is available here.
Journal of Virology (82)4 2008
Abstract
We have previously shown that Hsp90 chaperone complex activity is essential for efficient Flock House virus (FHV) RNA replication in Drosophila melanogaster S2 cells. To further explore the role of cellular chaperones in viral RNA replication, we used both pharmacologic and genetic approaches to exa...
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PMID: 18057252
PDF is available here.
PDF is available here.
Abstract
A new RT-PCR test has been developed to diagnose Chronic bee paralysis virus (CBPV) that is able to detect genetically variable viral isolates. In fact, up to 8.7% divergence between partial nucleotide sequences from viral isolates from French honey bees was highlighted in a preliminary variability...
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PMID: 17949741
PDF is available here.
PDF is available here.
Virus Research (131)1 2008
Abstract
We postulate that MMV may overcome transmission barriers in P. maidis by proceeding from the midgut to the anterior diverticulum and esophagus, and from these to the salivary glands via the nervous system: a neurotropic route similar to that of some vertebrate-infecting rhabdoviruses....
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PMID: 17928084
PDF is available here.
PDF is available here.
Archives of Virology (153)1 2008
Abstract
The major capsid protein (mcp) gene of Spodoptera exigua ascovirus 5a (SeAV-5a) was confirmed by aphidicolin viral DNA replication inhibition analysis to be a late gene. The 5' and 3' ends of mcp gene transcripts have been mapped. Primer extension analyses indicated that transcription of the mcp gen...
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PMID: 17978884
PDF is available here.
PDF is available here.
Archives of Virology (153)1 2008
Abstract
We offer a reverse transcription polymerase chain reaction (RT-PCR) assay for the detection of this virus with a sensitivity of approximately 95 genome equivalents. A survey employing this assay in conjunction with GWSS samples collected throughout the United States including California, Hawaii, Flo...
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PMID: 17906830
PDF is available here.
PDF is available here.
Abstract
We review here our current knowledge on drosophila viruses. A diverse set of RNA viruses belonging to several families (Rhabdoviridae, Dicistroviridae, Birnaviridae, Reoviridae, Errantiviridae) has been reported in D. melanogaster. By contrast, no DNA virus has been recovered up to now. The drosophi...
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PMID: 19081493
PDF is available here.
PDF is available here.
Abstract
A survey (2005-2006) of house fly, Musca dormestica L. (Diptera: Muscidae) populations on four Florida dairy farms demonstrated the presence of flies with acute symptoms of infection with salivary gland hypertrophy (SGH) virus on all farms. Disease incidence varied among farms (farm averages, 0.5-10...
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PMID: 18283941
PDF is available here.
PDF is available here.
Abstract
Knowledge of the spreading mechanism of honeybee pathogens within the hive is crucial to our understanding of bee disease dynamics. The aim of this study was to assess the presence of infectious chronic bee paralysis virus (CBPV) in bee excreta and evaluate its possible role as an indirect route of...
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PMID: 17933946
PDF is available here.
PDF is available here.
Journal of Insect Physiology (53)12 2007
Abstract
An endoparasitoid, Cotesia plutellae (Hymenoptera: Braconidae), possesses a mutualistic bracovirus (CpBV), which plays significant roles in the parasitized host, Plutella xylostella (Lepidoptera: Plutellidae). CpBV15beta, a viral gene encoded by CpBV, is expressed at early and late parasitization pe...
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PMID: 17706666
PDF is available here.
PDF is available here.
Abstract
We used an unbiased metagenomic approach to survey microflora in CCD hives, normal hives, and imported royal jelly. Candidate pathogens were screened for significance of association with CCD by the examination of samples collected from several sites over a period of 3 years. One organism, Israeli ac...
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PMID: 17823314
PDF is available here.
PDF is available here.
Genetika (Moskva) (43)10 2007
Abstract
Drosophila melanogaster retrotransposons of the gypsy group are considered to be potential errantiviruses. Their infectivity is caused by the functional activity of the third open reading frame (ORF3) encoding the Env protein, which was probably captured from baculoviruses. Mobile genetic elements (...
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PMID: 18069343
PDF is available here.
PDF is available here.
Abstract
Quantitative real-time PCR was employed to measure the Solenopsis invicta virus 1 (SINV-1) load in tissues, individuals, and among colonies of the red imported fire ant, S. invicta Buren. Among tissues examined from SINV-1-infected adults and larvae, the alimentary canal (specifically the midgut) co...
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PMID: 17544438
PDF is available here.
PDF is available here.
Journal of General Virology (88)Pt 8 2007
Abstract
Deformed wing virus (DWV) is a viral pathogen of the European honeybee (Apis mellifera), associated with clinical symptoms and colony collapse when transmitted by the ectoparasitic mite Varroa destructor. In the absence of V. destructor, DWV infection does not result in visible symptoms, suggesting...
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PMID: 17622639
PDF is available here.
PDF is available here.
Abstract
FEBS Letters (581)16 2007
Abstract
We demonstrated that the 5' untranslated region (5'UTR; 473 nucleotides) of Perina nuda virus (PnV) and the 5'UTR (579 nucleotides) of Rhopalosiphum padi virus (RhPV), but not the IRES sequence of Cricket paralysis virus, have internal translation activity in baculovirus-infected Sf21 cells. In addi...
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PMID: 17568583
PDF is available here.
PDF is available here.
Journal of Virological Methods (142)1-2 2007
Abstract
Rhopalosiphum padi virus (RhPV) is an insect RNA virus that infects aphids, reducing their lifespan and fecundity. It can be transmitted vertically between aphids and horizontally via the plant. An improved detection method for the virus in aphids and plants using RT-PCR was developed; this allowed...
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PMID: 17328968
PDF is available here.
PDF is available here.
Journal of General Virology (88)Pt 5 2007
Abstract
Rhopalosiphum padi virus (RhPV) is a member of the family Dicistroviridae. The genomes of viruses in this family contain two open reading frames, each preceded by distinct internal ribosome entry site (IRES) elements. The RhPV 5' IRES is functional in mammalian, insect and plant translation systems...
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PMID: 17412990
PDF is available here.
PDF is available here.
Journal of General Virology (88)Pt 5 2007
Abstract
We propose that the reduction in pH required for tetraviral maturation may be the result of cytosolic acidification, which is associated with the early onset of programmed cell death in infected cells....
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PMID: 17412989
PDF is available here.
PDF is available here.
Abstract
A two-step real-time RT-PCR assay, based on TaqMan technology using a fluorescent probe (FAM-TAMRA) was developed to quantify Chronic bee paralysis virus (CBPV) genome in bee samples. Standard curves obtained from a CBPV control RNA and from a plasmid containing a partial sequence of CBPV showed tha...
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PMID: 17166598
PDF is available here.
PDF is available here.
Parasitology (134)Pt 3 2007
Abstract
Our research indicates that the combination of mite parasitization, the interaction of DWV and microbes, and a developmental immune incompetency attribute to decreased worker survivorship and have a negative impact on colony fitness....
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PMID: 17078903
PDF is available here.
PDF is available here.
Journal of Virological Methods (140)1-2 2007
Abstract
A quantitative real-time PCR (QPCR) method was developed to detect and quantify the amount of Solenopsis invicta virus (SINV) infecting individual ants of S. invicta. The two-step method utilized a gene-specific oligonucleotide primer targeting the SINV RNA-dependent RNA polymerase (RdRp) for cDNA s...
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PMID: 17174411
PDF is available here.
PDF is available here.
Abstract
These results may be applicable to both applied and academic research that seeks to accurately identify the incidence of viruses and microorganisms that regulate insect populations....
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PMID: 17189436
PDF is available here.
PDF is available here.
Abstract
We screened nine cell lines derived from species within the Lepidoptera, Diptera and Hemiptera for susceptibility to RhPV following RNA transfection. We observed cytopathic effects (CPE) only in cell lines derived from hemipterans, specifically GWSS-Z10 cells derived from the glassy winged sharp sho...
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PMID: 17113099
PDF is available here.
PDF is available here.
Abstract
A total of 13 insect cell lines spanning 4 orders (Lepidoptera, Coleoptera, Diptera, and Homoptera) were tested for their ability to replicate the nonoccluded virus Hz-1. Only the Lepidopteran cell lines supported replication of the virus with TN-CL1 and BCIRL-HZ-AM1 producing the highest titers of...
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PMID: 17492336
PDF is available here.
PDF is available here.
Abstract
Parasitology Research (100)2 2007
Abstract
The gypsy virus of Drosophila melanogaster is the first identified retrovirus of insects. Its infectious properties have been reported, and it is able to cause diverse mutations of the phenotype in the fruit fly. As a typical endogenous retrovirus, it is transmitted vertically as part of the host ge...
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PMID: 16941190
PDF is available here.
PDF is available here.
Abstract
Viruses are significant threats to the health and well-being of the honey bee, Apis mellifera. To alleviate the threats posed by these invasive organisms, a better understanding of bee viral infections will be of crucial importance in developing effective and environmentally benign disease control s...
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PMID: 17765703
PDF is available here.
PDF is available here.
Journal of Virology (80)23 2006
Abstract
We previously identified a novel insect picorna-like virus, termed Kakugo virus (KV), from the brains of aggressive worker honeybees that had counterattacked a giant hornet. To survey the prevalence of KV in worker populations engaged in various labors, we quantified KV genomic RNA. KV was detected...
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PMID: 16971448
PDF is available here.
PDF is available here.
Journal of Virology (80)23 2006
Abstract
We sequenced the genome of the type species Spodoptera frugiperda ascovirus 1a (SfAV-1a). The genome consisted of 156,922 bp, with a G+C ratio of 49.2%, and contained 123 putative open reading frames coding for a variety of enzymes and virion structural proteins, of which tentative functions were as...
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PMID: 16987980
PDF is available here.
PDF is available here.
Genes & Development (20)21 2006
Abstract
We show that the central catalytic component of the RNA-induced silencing complex (RISC), the nuclease Argonaute 2 (Ago-2), is essential for antiviral defense in adult Drosophila melanogaster. Ago-2-defective flies are hypersensitive to infection with a major fruit fly pathogen, Drosophila C virus (...
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PMID: 17079687
PDF is available here.
PDF is available here.
Expression and characterization of RNA-dependent RNA polymerase of Dendrolimus punctatus tetravirus.
Abstract
Dendrolimus punctatus tetravirus (DpTV) has been identified as a new member of the genus Omegatetravirus of the family Tetraviridae that may be related serologically to Nudaurelia capensis virus (NomegaV). To establish the function of DpTV RNA genome and to better understand the mechanism of viral r...
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PMID: 17002878
PDF is available here.
PDF is available here.