A family of insect viruses causing disease in lepidopterous larvae, most commonly from species of the owlet moth family Noctuidae. There is one genus: Ascovirus.
Enzymes that catalyze DNA template-directed extension of the 3'-end of an RNA strand one nucleotide at a time. They can initiate a chain de novo. In eukaryotes, three forms of the enzyme have been distinguished on the basis of sensitivity to alpha-amanitin, and the type of RNA synthesized. (From Enzyme Nomenclature, 1992).
A family of large icosahedral DNA viruses infecting insects and poikilothermic vertebrates. Genera include IRIDOVIRUS; RANAVIRUS; Chloriridovirus; Megalocytivirus; and Lymphocystivirus.
Functions constructed from a statistical model and a set of observed data which give the probability of that data for various values of the unknown model parameters. Those parameter values that maximize the probability are the maximum likelihood estimates of the parameters.
A DNA-dependent RNA polymerase present in bacterial, plant, and animal cells. It functions in the nucleoplasmic structure and transcribes DNA into RNA. It has different requirements for cations and salt than RNA polymerase I and is strongly inhibited by alpha-amanitin. EC 2.7.7.6.
The arrangement of two or more amino acid or base sequences from an organism or organisms in such a way as to align areas of the sequences sharing common properties. The degree of relatedness or homology between the sequences is predicted computationally or statistically based on weights assigned to the elements aligned between the sequences. This in turn can serve as a potential indicator of the genetic relatedness between the organisms.
Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.
A contagious disease caused by canine adenovirus (ADENOVIRUSES, CANINE) infecting the LIVER, the EYE, the KIDNEY, and other organs in dogs, other canids, and bears. Symptoms include FEVER; EDEMA; VOMITING; and DIARRHEA.
Diseases of the domestic dog (Canis familiaris). This term does not include diseases of wild dogs, WOLVES; FOXES; and other Canidae for which the heading CARNIVORA is used.
Any liquid or solid preparation made specifically for the growth, storage, or transport of microorganisms or other types of cells. The variety of media that exist allow for the culturing of specific microorganisms and cell types, such as differential media, selective media, test media, and defined media. Solid media consist of liquid media that have been solidified with an agent such as AGAR or GELATIN.
The fission of a CELL. It includes CYTOKINESIS, when the CYTOPLASM of a cell is divided, and CELL NUCLEUS DIVISION.
The domestic dog, Canis familiaris, comprising about 400 breeds, of the carnivore family CANIDAE. They are worldwide in distribution and live in association with people. (Walker's Mammals of the World, 5th ed, p1065)
Systematic gathering of data for a particular purpose from various sources, including questionnaires, interviews, observation, existing records, and electronic devices. The process is usually preliminary to statistical analysis of the data.
The terms, expressions, designations, or symbols used in a particular science, discipline, or specialized subject area.
Indolesulfonic acid used as a dye in renal function testing for the detection of nitrates and chlorates, and in the testing of milk.
The systematic arrangement of entities in any field into categories classes based on common characteristics such as properties, morphology, subject matter, etc.
International collective of humanitarian organizations led by volunteers and guided by its Congressional Charter and the Fundamental Principles of the International Red Cross Movement, to provide relief to victims of disaster and help people prevent, prepare for, and respond to emergencies.
A plant genus of the family ORCHIDACEAE that is the source of the familiar flavoring used in foods and medicines (FLAVORING AGENTS).
A plant genus of the family Paeoniaceae, order Dilleniales, subclass Dilleniidae, class Magnoliopsida. These perennial herbs are up to 2 m (6') tall. Leaves are alternate and are divided into three lobes, each lobe being further divided into three smaller lobes. The large flowers are symmetrical, bisexual, have 5 sepals, 5 petals (sometimes 10), and many stamens.
A bibliographic database that includes MEDLINE as its primary subset. It is produced by the National Center for Biotechnology Information (NCBI), part of the NATIONAL LIBRARY OF MEDICINE. PubMed, which is searchable through NLM's Web site, also includes access to additional citations to selected life sciences journals not in MEDLINE, and links to other resources such as the full-text of articles at participating publishers' Web sites, NCBI's molecular biology databases, and PubMed Central.
A publication issued at stated, more or less regular, intervals.
"The business or profession of the commercial production and issuance of literature" (Webster's 3d). It includes the publisher, publication processes, editing and editors. Production may be by conventional printing methods or by electronic publishing.
The premier bibliographic database of the NATIONAL LIBRARY OF MEDICINE. MEDLINE® (MEDLARS Online) is the primary subset of PUBMED and can be searched on NLM's Web site in PubMed or the NLM Gateway. MEDLINE references are indexed with MEDICAL SUBJECT HEADINGS (MeSH).
Publications in any medium issued in successive parts bearing numerical or chronological designations and intended to be continued indefinitely. (ALA Glossary of Library and Information Science, 1983, p203)
All of the divisions of the natural sciences dealing with the various aspects of the phenomena of life and vital processes. The concept includes anatomy and physiology, biochemistry and biophysics, and the biology of animals, plants, and microorganisms. It should be differentiated from BIOLOGY, one of its subdivisions, concerned specifically with the origin and life processes of living organisms.
Works containing information articles on subjects in every field of knowledge, usually arranged in alphabetical order, or a similar work limited to a special field or subject. (From The ALA Glossary of Library and Information Science, 1983)
A republic stretching from the Indian Ocean east to New Guinea, comprising six main islands: Java, Sumatra, Bali, Kalimantan (the Indonesian portion of the island of Borneo), Sulawesi (formerly known as the Celebes) and Irian Jaya (the western part of New Guinea). Its capital is Djakarta. The ethnic groups living there are largely Chinese, Arab, Eurasian, Indian, and Pakistani; 85% of the peoples are of the Islamic faith.
A parliamentary democracy with a constitutional monarch in southeast Asia, consisting of 11 states (West Malaysia) on the Malay Peninsula and two states (East Malaysia) on the island of BORNEO. It is also called the Federation of Malaysia. Its capital is Kuala Lumpur. Before 1963 it was the Union of Malaya. It reorganized in 1948 as the Federation of Malaya, becoming independent from British Malaya in 1957 and becoming Malaysia in 1963 as a federation of Malaya, Sabah, Sarawak, and Singapore (which seceded in 1965). The form Malay- probably derives from the Tamil malay, mountain, with reference to its geography. (From Webster's New Geographical Dictionary, 1988, p715 & Room, Brewer's Dictionary of Names, 1992, p329)
NATIONAL LIBRARY OF MEDICINE service for health professionals and consumers. It links extensive information from the National Institutes of Health and other reviewed sources of information on specific diseases and conditions.
Viruses whose genetic material is RNA.
The type species of ORTHOPOXVIRUS, related to COWPOX VIRUS, but whose true origin is unknown. It has been used as a live vaccine against SMALLPOX. It is also used as a vector for inserting foreign DNA into animals. Rabbitpox virus is a subspecies of VACCINIA VIRUS.
A genus of the family PICORNAVIRIDAE whose members preferentially inhabit the intestinal tract of a variety of hosts. The genus contains many species. Newly described members of human enteroviruses are assigned continuous numbers with the species designated "human enterovirus".
A species of ENTEROVIRUS infecting humans and containing 36 serotypes. It is comprised of all the echoviruses and a few coxsackieviruses, including all of those previously named coxsackievirus B.
A heterogeneous group of infections produced by coxsackieviruses, including HERPANGINA, aseptic meningitis (MENINGITIS, ASEPTIC), a common-cold-like syndrome, a non-paralytic poliomyelitis-like syndrome, epidemic pleurodynia (PLEURODYNIA, EPIDEMIC) and a serious MYOCARDITIS.
Infectious disease processes, including meningitis, diarrhea, and respiratory disorders, caused by echoviruses.
A species of ENTEROVIRUS which is the causal agent of POLIOMYELITIS in humans. Three serotypes (strains) exist. Transmission is by the fecal-oral route, pharyngeal secretions, or mechanical vector (flies). Vaccines with both inactivated and live attenuated virus have proven effective in immunizing against the infection.
A species of ENTEROVIRUS infecting humans and containing 10 serotypes, mostly coxsackieviruses.
A genus of the family CORONAVIRIDAE which causes respiratory or gastrointestinal disease in a variety of vertebrates.
Hoofed mammals with four legs, a big-lipped snout, and a humped back belonging to the family Camelidae.
The sequence of PURINES and PYRIMIDINES in nucleic acids and polynucleotides. It is also called nucleotide sequence.
Virus diseases caused by the CORONAVIRUS genus. Some specifics include transmissible enteritis of turkeys (ENTERITIS, TRANSMISSIBLE, OF TURKEYS); FELINE INFECTIOUS PERITONITIS; and transmissible gastroenteritis of swine (GASTROENTERITIS, TRANSMISSIBLE, OF SWINE).
A group of deoxyribonucleotides (up to 12) in which the phosphate residues of each deoxyribonucleotide act as bridges in forming diester linkages between the deoxyribose moieties.
The region of southwest Asia and northeastern Africa usually considered as extending from Libya on the west to Afghanistan on the east. (From Webster's New Geographical Dictionary, 1988)
Lists of persons or organizations, systematically arranged, usually in alphabetic or classed order, giving address, affiliations, etc., for individuals, and giving address, officers, functions, and similar data for organizations. (ALA Glossary of Library and Information Science, 1983)
The name given to all Christian denominations, sects, or groups rising out of the Reformation. Protestant churches generally agree that the principle of authority should be the Scriptures rather than the institutional church or the pope. (from W.L. Reese, Dictionary of Philosophy and Religion, 1999)
The religion stemming from the life, teachings, and death of Jesus Christ: the religion that believes in God as the Father Almighty who works redemptively through the Holy Spirit for men's salvation and that affirms Jesus Christ as Lord and Savior who proclaimed to man the gospel of salvation. (From Webster, 3d ed)
Private hospitals that are owned or sponsored by religious organizations.

Phylogenetic analysis and possible function of bro-like genes, a multigene family widespread among large double-stranded DNA viruses of invertebrates and bacteria. (1/16)

Baculovirus repeated open reading frame (bro) genes and their relatives constitute a multigene family, typically with multiple copies per genome, known to occur among certain insect dsDNA viruses and bacteriophages. Little is known about the evolutionary history and function of the proteins encoded by these genes. Here we have shown that bro and bro-like (bro-l) genes occur among viruses of two additional invertebrate viral families, Ascoviridae and Iridoviridae, and in prokaryotic class II transposons. Analysis of over 100 sequences showed that the N-terminal region, consisting of two subdomains, is the most conserved region and contains a DNA-binding motif that has been characterized previously. Phylogenetic analysis indicated that these proteins are distributed among eight groups, Groups 1-7 consisting of invertebrate virus proteins and Group 8 of proteins in bacteriophages and bacterial transposons. No bro genes were identified in databases of invertebrate or vertebrate genomes, vertebrate viruses and transposons, nor in prokaryotic genomes, except in prophages or transposons of the latter. The phylogenetic relationship between bro genes suggests that they have resulted from recombination of viral genomes that allowed the duplication and loss of genes, but also the acquisition of genes by horizontal transfer over evolutionary time. In addition, the maintenance and diversity of bro-l genes in different types of invertebrate dsDNA viruses, but not in vertebrate viruses, suggests that these proteins play an important role in invertebrate virus biology. Experiments with the unique orf2 bro gene of Autographa californica multicapsid nucleopolyhedrovirus showed that it is not required for replication, but may enhance replication during the occlusion phase of reproduction.  (+info)

Evidence for the evolution of ascoviruses from iridoviruses. (2/16)

Ascoviruses (family Ascoviridae) are large, enveloped, double-stranded (ds)DNA viruses that attack lepidopteran larvae and pupae, and are unusual in that they are transmitted by parasitic wasps during oviposition. Previous comparisons of DNA polymerase sequences from vertebrate and invertebrate viruses suggested that ascoviruses are closely related to iridoviruses. This relationship was unexpected because these viruses differ markedly in virion symmetry, genome configuration and cellular pathology. Here we present evidence based on sequence comparisons and phylogenetic analyses of a greater range of ascovirus proteins and their homologues in other large dsDNA viruses that ascoviruses evolved from iridoviruses. Consensus trees for the major capsid protein, DNA polymerase, thymidine kinase and ATPase III from representative ascoviruses, algal viruses (family Phycodnaviridae), vertebrate and invertebrate iridoviruses (family Iridoviridae) and African swine fever virus (ASFV; family Asfarviridae) showed that ascovirus proteins clustered most closely with those of the lepidopteran iridovirus Chilo iridescent virus (CIV) (Invertebrate iridescent virus 6). Moreover, analysis of the presence or absence of homologues of an additional 50 proteins encoded in the genome of Spodoptera frugiperda ascovirus (SfAV-1a) showed that about 40 % occurred in CIV, with lower percentages encoded by the genomes of, respectively, vertebrate iridoviruses, phycodnaviruses and ASFV. The occurrence of three of these genes in SfAV-1a but not CIV was indicative of the evolutionary differentiation of ascoviruses from invertebrate iridoviruses.  (+info)

A viral caspase contributes to modified apoptosis for virus transmission. (3/16)

The Spodoptera frugiperda ascovirus, a DNA virus that attacks lepidopterans, codes for an executioner caspase synthesized by 9 h after infection of Sf21 cells. This caspase alone induces apoptosis in insect cells and, during viral replication in vivo, contributes to a novel cell cleavage process in which developing apoptotic bodies are rescued by the virus and differentiate to form large vesicles in which virions assemble. These viral vesicles disseminate to the blood, where they are acquired during egg-laying by parasitic wasps that transmit the virus. No other viruses encode caspases or form such modified apoptotic bodies, suggesting this caspase plays a direct role in cell partitioning that facilitates viral reproduction and transmission.  (+info)

Sequence and organization of the Trichoplusia ni ascovirus 2c (Ascoviridae) genome. (4/16)

The complete Trichoplusia ni ascovirus 2c (TnAV-2c) genome sequence was determined. The circular genome contains 174,059 bp with 165 open reading frames (ORFs) of greater than 180 bp and two major homologous regions (hrs). The genome is quite A+T rich at 64.6%. Fifty-four ORFs had homologues in other insect viruses, such as ascoviruses, iridoviruses, baculoviruses and entomopoxviruses; 30 ORFs showed low identities with those from different parasitic protozoa and 12 ORFs were unique to TnAV-2c. TnAV-2c has 15 ORFs that could be grouped into six gene families. Three major conserved repeating sequences were identified and were interspersed in two regions. BLAST analyses revealed that there were 16 enzymes involved in gene transcription, DNA replication, and nucleotide metabolism. TnAV-2c has 12 and 25 ORFs sharing high identities with ascovirus and iridovirus homologues, respectively. The codon usage bias appears to be more similar to Spodoptera frugiperda ascovirus 1a than to iridoviruses.  (+info)

Genomic sequence of Spodoptera frugiperda Ascovirus 1a, an enveloped, double-stranded DNA insect virus that manipulates apoptosis for viral reproduction. (5/16)

Ascoviruses (family Ascoviridae) are double-stranded DNA viruses with circular genomes that attack lepidopterans, where they produce large, enveloped virions, 150 by 400 nm, and cause a chronic, fatal disease with a cytopathology resembling that of apoptosis. After infection, host cell DNA is degraded, the nucleus fragments, and the cell then cleaves into large virion-containing vesicles. These vesicles and virions circulate in the hemolymph, where they are acquired by parasitic wasps during oviposition and subsequently transmitted to new hosts. To develop a better understanding of ascovirus biology, 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 assigned to 44. Among the most interesting enzymes, due to their potential role in apoptosis and viral vesicle formation, were a caspase, a cathepsin B, several kinases, E3 ubiquitin ligases, and especially several enzymes involved in lipid metabolism, including a fatty acid elongase, a sphingomyelinase, a phosphate acyltransferase, and a patatin-like phospholipase. Comparison of SfAV-1a proteins with those of other viruses showed that 10% were orthologs of Chilo iridescent virus proteins, the highest correspondence with any virus, providing further evidence that ascoviruses evolved from a lepidopteran iridovirus. The SfAV-1a genome sequence will facilitate the determination of how ascoviruses manipulate apoptosis to generate the novel virion-containing vesicles characteristic of these viruses and enable study of their origin and evolution.  (+info)

Sequence and organization of the Heliothis virescens ascovirus genome. (6/16)

The nucleotide sequence of the Heliothis virescens ascovirus (HvAV-3e) DNA genome was determined and characterized in this study. The circular genome consists of 186,262 bp, has a G+C content of 45.8 mol% and encodes 180 potential open reading frames (ORFs). Five unique homologous regions (hrs), 23 'baculovirus repeat ORFs' (bro) and genes encoding a caspase homologue and several enzymes involved in nucleotide replication and metabolism were found in the genome. Several ascovirus (AV)-, iridovirus- and baculovirus-homologous genes were identified. The genome is significantly larger than the recently sequenced genomes of Trichoplusia ni AV (TnAV-2c) and Spodoptera frugiperda AV (SfAV-1a). Gene-parity plots and overall similarity of ORFs indicate that HvAV-3e is related more closely to SfAV-1a than to TnAV-2c.  (+info)

Identification of Trichoplusia ni ascovirus 2c virion structural proteins. (7/16)

Ascoviruses are a family of insect viruses with circular, double-stranded DNA genomes. With the sequencing of the Trichoplusia ni ascovirus 2c (TnAV-2c) genome, the virion structural proteins were identified by using tandem mass spectrometry. From at least eight protein bands visible on a Coomassie blue-stained gel of TnAV-2c virion proteins, seven bands generated protein sequences that matched predicted open reading frames (ORFs) in the genome, i.e. ORFs 2, 43, 115, 141, 142, 147 and 153. Among these ORFs, only ORF153, encoding the major capsid protein, has been characterized previously.  (+info)

An insect virus-encoded microRNA regulates viral replication. (8/16)

 (+info)

Figure 2.Ascoviridae: Phylogenetic tree obtained with nine core proteins shared by the members of Ascoviridae, Iridoviridae and Marseilleviridae. The tree was calculated using Mafft or Muscle alignments curated with Gblock (parameters were: -t=p -e=-gb1 -b2=N -b3=40 -b4=2 -b5=a -v=120), except for the RNase III orthologues, for which the complete sequence alignment was used. Alignments of the homologues of HvAV-3g ORF1 (DNA polymerase), 11 (DNA-directed RNA polymerase), 15 (DEAD-like helicase), 70 (DNA-directed RNA polymerase II), 74 (hypothetical protein), 81 (hypothetical protein), 85 (serine/threonine protein kinase), 122 (ATPase), 160 (hypothetical protein) were concatenated and trees based on maximum likelihood were calculated with PhyML. Parameters used were WAG (substitution matrix), 0 (proportion of invariable sites), 7 in a, and 5 in f (number of relative substitution rate categories), and F (substitution model). The protein substitution model, the proportion of invariable sites, the ...
Ascoviruses are ds DNA viruses that attack caterpillars and differ from all other viruses by inducing nuclear lysis followed by cleavage of host cells into numerous anucleate vesicles in which virus replication continues as these grow in the blood. Ascoviruses are also unusual in that most encode apoptosis inhibitors and caspase or caspase-like proteins. A robust cell line to study the novel molecular biology of ascovirus replication in vitro is lacking. Therefore, we used strand-specific RNA-Seq to study transcription in vivo in third instars of Spodoptera frugiperda infected with the Spodoptera frugiperda ascovirus, a member of the type species, Spodoptera frugiperda ascovirus (SfAV-1a), sampling transcripts at different time points after infection ...
As the only open-admission animal shelter in our rural and underserved area of Rome, Georgia, Public Animal Welfare Services takes in thousands of animals a year. Many pets enter our facility for the same reason: Their owners cannot afford pet care.
Krafft L.; Klingauf F., 1981: Differences in the development of heliothis virescens when given artificial diets with admixtures of secondary plant substances and amino acids
Schematic illustration of the organization of the Diadromus pulchellus ascovirus 4a (DpAV4a) genome.Predicted ORFs are indicated by their location, orientation,
This report explores how mobile services provided by Vodafone and the Vodafone Foundation are enabling women to seize new opportunities and improve their lives. Accenture Sustainability Services were commissioned to conduct research on the services and to assess their potential social and economic impact if they were widely available across Vodafones markets by 2020. It showcases the projects and the work of those involved and also poses the question -- what would the benefit to women and to society at large be if projects such as these were taken to scale and achieved an industrialscale of growth? This reflects the Foundations commitment not solely to the development of pilots but rather the Trustees ambition to see projects which lead to transformational change. In order to understand this more deeply, the Report looks at the benefits for women and society and providessome financial modelling for how the engagement of commercial players could achieve industrial, sustainable growth in these ...
TY - JOUR. T1 - Cloning and characterization of a microsomal epoxide hydrolase from Heliothis virescens. AU - Kamita, Shizuo G.. AU - Yamamoto, Kohji. AU - Dadala, Mary M.. AU - Pha, Khavong. AU - Morisseau, Christophe. AU - Escaich, Aurélie. AU - Hammock, Bruce D.. PY - 2013/3. Y1 - 2013/3. N2 - Epoxide hydrolases (EHs) are α/β-hydrolase fold superfamily enzymes that convert epoxides to 1,2-trans diols. In insects EHs play critical roles in the metabolism of toxic compounds and allelochemicals found in the diet and for the regulation of endogenous juvenile hormones (JHs). In this study we obtained a full-length cDNA, hvmeh1, from the generalist feeder Heliothis virescens that encoded a highly active EH, Hv-mEH1. Of the 10 different EH substrates that were tested, Hv-mEH1 showed the highest specific activity (1180 nmol min-1 mg-1) for a 1,2-disubstituted epoxide-containing fluorescent substrate. This specific activity was more than 25- and 3900-fold higher than that for the general EH ...
jurnal ilmiah yang memuat publikasi berupa artikel hasil penelitian, telaah literatur, atau komunikasi singkat mengenai perlindungan tanaman yang terkait bidang hama dan penyakit tanaman
Im working on iridoviruses infecting erythrocytes of poikilotherms which are often misinterpreted as protozoan parasites. I would like to make contacts with anyone interested in these infections. E-mail address is zmtlopes at cc.fc.ul.pt my name is A.P. Alves de Matos ...
TY - JOUR. T1 - Terminal steps in pheromone biosynthesis by Heliothis virescens and H. zea. AU - Teal, P. E.A.. AU - Tumlinson, III, James Homer. PY - 1986/2/1. Y1 - 1986/2/1. N2 - In vivo application to the sex pheromone gland of Heliothis Virescens and H. Zea of large quantities of alcohols normally present in small amounts resulted in the preferential conversion of the alcohols to the corresponding pheromonal aldehydes. Amounts of the minor component aldehydes were increased up to 15-fold by selectively applying large quantities of the alcohol precursors. Using this technique, we have induced H. virescens to convert bombykol, the sex pheromone of the silkworm, to the corresponding aldehyde, bombykal, and have induced female H. zea to produce the same sex pheromone components used by H. virescens by applying tetradecanol and (Z)-9-tetradecenol to the surface of the gland. Further, treated H. zea females were attractive to H. virescens males and caused males to attempt interspecific ...
Heliothis is a genus of moths, whose larvae are agricultural pests on crop species such as tobacco, cotton, soybean and pigeon pea. Several species of moths of agricultural importance that used to be placed in this genus now are classified as members of the genus Helicoverpa, such as the corn earworm, Helicoverpa zea. Eyes naked and without lashes. Proboscis fully developed. Palpi porrect and second joint evenly clothes with long hair. The third joint is short and depressed and a short frontal shift. Thorax and abdomen without tufts. Fore tibia has a pair of slender terminal spines, whereas mid and hind tibia also spined. Fore wings with veins 8 and 9 sometimes given off from the end of the areole. Subgenus Heliothis: Heliothis acesias Felder & Rogenhofer, 1872 Heliothis australis Hardwick, 1994 Heliothis belladonna (H. Edwards, 1881) Heliothis borealis (Hampson, 1903) Heliothis conifera (Hampson, 1913) Heliothis cystiphora (Wallengren, 1860) Heliothis flavescens (Janse, 1917) Heliothis ...
"Ascoviridae-Ascoviridae-dsDNA Viruses-International Committee on Taxonomy of Viruses (ICTV)". International Committee on ... Ascoviridae can have up to 180 genes in its genome. The replication of this virus takes place in the nucleus of the host cell. ... Members of the family Ascoviridae come in different shapes. Some can be rod-shaped, while others are oval. They measure up to ... Pithovirus, Iridoviridae-Ascoviridae and Marseillevirus form a PIM or MAPI clade (Pimascovirales) in trees built from conserved ...
Famili Ascoviridae. *Famili Adenoviridae. *Famili Asfarviridae - includes African swine fever virus. *Famili Baculoviridae ...
The following families are recognized: Ascoviridae Iridoviridae Marseilleviridae "Virus Taxonomy: 2019 Release". talk. ...
囊泡病毒科 Ascoviridae. *棒状病毒科 Baculoviridae ...
囊泡病毒科 Ascoviridae. *棒状病毒科 Baculoviridae ...
Although most members of this group have icosahedral capsid geometry, a few families such as the Poxviridae and Ascoviridae ...
Alvernaviridae Amalgaviridae Amnoonviridae Ampullaviridae Anelloviridae Arenaviridae Arteriviridae Artoviridae Ascoviridae ...
ICTV Online (10th) Report: Ascoviridae/ Viralzone: Ascoviridae/ Ascoviridae at the US National Library of Medicine Medical ... Ascoviridae is a family of double strand DNA viruses that infect primarily invertebrates, mainly noctuids and spodoptera ... "Ascoviridae". ICTV Online (10th) Report. "Viral Zone". ExPASy. Retrieved 12 June 2015. Xue JL, Cheng XW (December 2011). " ... Asgari S, Bideshi DK, Bigot Y, Federici BA, Cheng XW (January 2017). "ICTV Virus Taxonomy Profile: Ascoviridae". The Journal of ...
When retroviruses have integrated their own genome into the germ line, their genome is passed on to a following generation. These endogenous retroviruses (ERVs), contrasted with exogenous ones, now make up 5-8% of the human genome.[7] Most insertions have no known function and are often referred to as "junk DNA". However, many endogenous retroviruses play important roles in host biology, such as control of gene transcription, cell fusion during placental development in the course of the germination of an embryo, and resistance to exogenous retroviral infection. Endogenous retroviruses have also received special attention in the research of immunology-related pathologies, such as autoimmune diseases like multiple sclerosis, although endogenous retroviruses have not yet been proven to play any causal role in this class of disease.[8] While transcription was classically thought to occur only from DNA to RNA, reverse transcriptase transcribes RNA into DNA. The term "retro" in retrovirus refers to ...
The hepatitis envelope proteins are composed of subunits made from the viral preS1, preS2, and S genes. The L (for "large") envelope protein contains all three subunits. The M (for "medium") protein contains only preS2 and S. The S (for "small") protein contains only S. The genome portions encoding these envelope protein subuntis share both the same frame and the same stop codon (generating nested transcripts on a single open reading frame. The pre-S1 is encoded first (closest to the 5' end), followed directly by the pre-S2 and the S. When a transcript is made from the beginning of the pre-S1 region, all three genes are included in the transcript and the L protein is produced. When the transcript starts after the pro-S1 at the beginning of the pre-S2 the final protein contains the pre-S2 and S subunits only and therefore is an M protein. The smallest envelope protein containing just the S subunit is made most because it is encoded closest to the 3' end and comes from the shortest transcript. ...
Viruses in Betanodavirus are non-enveloped, with icosahedral geometries, and T=3 symmetry. The diameter is around 30 nm. Genomes are linear and segmented, bipartite, around 21.4kb in length.[8]. The crystal structure of a betanodavirus- T=3 Grouper nervous necrosis virus (GNNV)-like particle has been determined by X-ray crystallography. The virus-like particle contains 180 subunits of the capsid protein, and each capsid protein (CP) shows three major domains: (i) the N-terminal arm, an inter-subunit extension at the inner surface; (ii) the shell domain (S-domain), a jelly-roll structure; and (iii) the protrusion domain (P-domain) formed by three-fold trimeric protrusions. [10]. ...
Nucleic acid analysis suggests a very long association of the viruses with the wasps (greater than 70 million years).. Two proposals have been advanced for how the wasp/virus association developed. The first suggests that the virus is derived from wasp genes. Many parasitoids that do not use PDVs inject proteins that provide many of the same functions, that is, a suppression of the immune response to the parasite egg. In this model, the braconid and ichneumonid wasps packaged genes for these functions into the viruses-essentially creating a gene-transfer system that results in the caterpillar producing the immune-suppressing factors. In this scenario, the PDV structural proteins (capsids) were probably "borrowed" from existing viruses.. The alternative proposal suggests that ancestral wasps developed a beneficial association with an existing virus that eventually led to the integration of the virus into the wasp's genome. Following integration, the genes responsible for virus replication and the ...
Louis Pasteur was unable to find a causative agent for rabies and speculated about a pathogen too small to be detected using a microscope.[21] In 1884, the French microbiologist Charles Chamberland invented a filter (known today as the Chamberland filter or the Pasteur-Chamberland filter) with pores smaller than bacteria. Thus, he could pass a solution containing bacteria through the filter and completely remove them from the solution.[22] In 1892, the Russian biologist Dmitri Ivanovsky used this filter to study what is now known as the tobacco mosaic virus. His experiments showed that crushed leaf extracts from infected tobacco plants remain infectious after filtration. Ivanovsky suggested the infection might be caused by a toxin produced by bacteria, but did not pursue the idea.[23] At the time it was thought that all infectious agents could be retained by filters and grown on a nutrient medium - this was part of the germ theory of disease.[2] In 1898, the Dutch microbiologist Martinus ...
The Herpesvirales naming system originated in 1973 and has been elaborated considerably since. All herpesviruses described since this system was adopted have been named in accordance with it. The recommended naming system specifies that each species name consists of three parts: a first word, a second word, and finally a number. The first word should be derived from the taxon (family or subfamily) to which its primary natural host belongs. The subfamily name is used for viruses from members of the family Bovidae or from primates (the virus name ending in -ine, e.g. bovine), and the host family name for other viruses (ending in -id, e.g. equid). Human herpesviruses have been treated as an exception (human rather than hominid). Following the host-derived term, species in the family Herpesviridae, which are divided into subfamilies Alphaherpesvirinae, Betaherpesvirinae, and Gammaherpesvirinae, will have the word alphaherpesvirus, betaherpesvirus, or gammaherpesvirus added, respectively. Species in ...
Despite his other successes, Louis Pasteur (1822-1895) was unable to find a causative agent for rabies and speculated about a pathogen too small to be detected using a microscope.[1] In 1884, the French microbiologist Charles Chamberland (1851-1931) invented a filter - known today as the Chamberland filter - that had pores smaller than bacteria. Thus, he could pass a solution containing bacteria through the filter and completely remove them from the solution.[2] In 1876, Adolf Mayer, who directed the Agricultural Experimental Station in Wageningen was the first to show that what he called "Tobacco Mosaic Disease" was infectious, he thought that it was caused by either a toxin or a very small bacterium. Later, in 1892, the Russian biologist Dmitry Ivanovsky (1864-1920) used a Chamberland filter to study what is now known as the tobacco mosaic virus. His experiments showed that crushed leaf extracts from infected tobacco plants remain infectious after filtration. Ivanovsky suggested the infection ...
Gammaherpesviruses are of primary interest due to the two human viruses, EBV and KSHV and the diseases they cause. The gammaherpesviruses replicate and persist in lymphoid cells but some are capable of undergoing lytic replication in epithelial or fibroblast cells. Gammaherpesviruses may be a cause of chronic fibrotic lung diseases in humans and in animals.[10] Murid herpesvirus 68 is an important model system for the study of gammaherpesviruses with tractable genetics. The gammaherpesviruses, including HVS, EBV, KSHV, and RRV, are capable of establishing latent infection in lymphocytes.[9] Attenuated virus mutants represent a promising approach towards gamma-herpesvirus infection control. Surprisingly, latency-deficient and, therefore, apathogenic MHV-68 mutants are found to be highly effective vaccines against these viruses.[8] Research in this area is almost exclusively performed using MHV68 as KSHV and EBV (the major human pathogens of this family) do not productively infect model organisms ...
The Birnaviridae genome encodes several proteins: Birnaviridae RNA-directed RNA polymerase (VP1), which lacks the highly conserved Gly-Asp-Asp (GDD) sequence, a component of the proposed catalytic site of this enzyme family that exists in the conserved motif VI of the palm domain of other RNA-directed RNA polymerases.[3] The large RNA segment, segment A, of birnaviruses codes for a polyprotein (N-VP2-VP4-VP3-C) [4] that is processed into the major structural proteins of the virion: VP2, VP3 (a minor structural component of the virus), and into the putative protease VP4.[4] VP4 protein is involved in generating VP2 and VP3.[4] recombinant VP3 is more immunogenic than recombinant VP2.[5] Infectious pancreatic necrosis virus (IPNV), a birnavirus, is an important pathogen in fish farms. Analyses of viral proteins showed that VP2 is the major structural and immunogenic polypeptide of the virus.[6][7] All neutralizing monoclonal antibodies are specific to VP2 and bind to continuous or discontinuous ...
Mononegavirales adalah ordo virus RNA yang berada dalam filum Negarnaviricota dan kelas Monjiviricetes.[1] Nama Mononegavirales berasa dari bahasa Yunani μóνος [monos] yang merujuk pada genom untai tunggal pada sebagian besar ordo ini, bahasa Latin negare yang merujuk pada sifat sense-negatif genom virus, serta akhiran -virales yang menunjukkan ordo virus.[2] Anggota ordo ini yang dikenal di antaranya virus rabies dan virus Ebola yang dapat menyebabkan penyakit, baik pada manusia maupun hewan. ...
Familie Ascoviridae (siehe NCLDV, vermutlich eine gemeinsame Klade mit Iridoviridae und Ichnovirus) ... Familie Iridoviridae (siehe NCLDV, vermutlich eine gemeinsame Klade mit Ascoviridae und Ichnovirus) ... Genus Ichnovirus (siehe NCLDV, vermutlich eine gemeinsame Klade mit Ascoviridae und Iridoviridae) ...
ungrouped: Ascoviridae · Asfarviridae · Baculoviridae · Coccolithoviridae · Corticoviridae · Fuselloviridae · Guttaviridae · ...
ICTV Online (10th) Report: Ascoviridae/ Viralzone: Ascoviridae/ Ascoviridae at the US National Library of Medicine Medical ... Ascoviridae is a family of double strand DNA viruses that infect primarily invertebrates, mainly noctuids and spodoptera ... "Ascoviridae". ICTV Online (10th) Report. "Viral Zone". ExPASy. Retrieved 12 June 2015. Xue JL, Cheng XW (December 2011). " ... Asgari S, Bideshi DK, Bigot Y, Federici BA, Cheng XW (January 2017). "ICTV Virus Taxonomy Profile: Ascoviridae". The Journal of ...
Figure 2.Ascoviridae: Phylogenetic tree obtained with nine core proteins shared by the members of Ascoviridae, Iridoviridae and ... Figure 1.Ascoviridae: Morphology of ascovirus virions. A. Schematic illustration of the structure of a typical ascovirus virion ... The family Ascoviridae includes viruses with circular dsDNA genomes of 100-200 kilobase pairs (kbp) characterized by oblong ... Members of the family Ascoviridae vary in tissue tropism, with some attacking most host tissues, such as TnAV-2a and HvAV-3a, ...
Figure 2.Ascoviridae: Phylogenetic tree obtained with nine core proteins shared by the members of Ascoviridae, Iridoviridae and ... Figure 1.Ascoviridae: Morphology of ascovirus virions. A. Schematic illustration of the structure of a typical ascovirus virion ... The family Ascoviridae includes viruses with circular dsDNA genomes of 100-200 kilobase pairs (kbp) characterized by oblong ... Members of the family Ascoviridae vary in tissue tropism, with some attacking most host tissues, such as TnAV-2a and HvAV-3a, ...
The continuous growth of knowledege makes it very difficult for scientists to retrieve comprehensive and accurate data on viruses. The desired information is often dispersed in a variety of books, jou
Ascoviridae. Genus. Ascovirus. Family. Asfarviridae. Genus. Asfivirus. Family. Baculoviridae. Genus. Alphabaculovirus. Genus. ...
ICTV Virus Taxonomy Profile: Ascoviridae.. Asgari S, Bideshi DK, Bigot Y, Federici BA, Cheng XW, Ictv Report Consortium. ...
Famili Ascoviridae. *Famili Adenoviridae. *Famili Asfarviridae - includes African swine fever virus. *Famili Baculoviridae ...
囊泡病毒科 Ascoviridae. *棒状病毒科 Baculoviridae ...
囊泡病毒科 Ascoviridae. *棒状病毒科 Baculoviridae ...
"Ascoviridae-Ascoviridae-dsDNA Viruses-International Committee on Taxonomy of Viruses (ICTV)". International Committee on ... Ascoviridae can have up to 180 genes in its genome. The replication of this virus takes place in the nucleus of the host cell. ... Members of the family Ascoviridae come in different shapes. Some can be rod-shaped, while others are oval. They measure up to ... Pithovirus, Iridoviridae-Ascoviridae and Marseillevirus form a PIM or MAPI clade (Pimascovirales) in trees built from conserved ...
Ascoviridae: In Virus Taxonomy: Ninth Report of the International Committee on Taxonomy of Viruses. (A.M.Q. King, M.J. Adams, E ... ICTV Virus Taxonomy Profile: Ascoviridae. Journal of General Virology, 98:4-5. DOI 10.1099/jgv.0.000677.. 73. González‑Ponce, K ... Member of Study Group: Ascoviridae Section. International Committee on the Taxonomy of Viruses ... entomopathogenic viruses belonging in the family Ascoviridae and Baculoviridae; 2. understanding the genetic mechanisms ...
Family Ascoviridae. *Family Adenoviridae. *Family Asfarviridae - includes African swine fever virus. *Family Baculoviridae ...
Ascoviridae, Asfarviridae and Poxviridae. Among theses, Megairidae is a recently proposed family (Arslan et al., 2011), which ...
Sequence and organization of the Trichoplusia ni ascovirus 2c (Ascoviridae) genome. 2006. Wang, L.; Xue, J.; Seaborn, C.P.; ...
The branching order near the root of the invertebrate Iridoviridae/ Ascoviridae could not be resolved and differed between ... Ascoviridae and Marseilleviridae (Piégu et al. 2015) (Table S1). Our analysis showed that the Iridoviridae split into two well- ... The Ascoviridae form the sister clade to the IIV, making the Iridoviridae a paraphyletic group. The Daphnia virus and the other ... of Ascoviridae. A total of 369 tandem repeats (TRs) are found in the DIV-1 genome: eight microsatellites (1-6 bp repeat unit ...
1). The NCLDVs Ascoviridae and Marseilleviridae were rare, as were other viral families (,0.5%; Fig. 1). The most predominant ... Ascoviridae; with Caudovirales or tailed bacteriophages being the most dominant order (reviewed in Thurber et al., 2017). ...
Viruses in the phycodnavirus family, together with those in the Poxviridae, Iridoviridae, Ascoviridae, Asfarviridae, ...
Ascoviridae, Inoviridae, Orthomyxoviridae, Asfarviridae, Caulimoviridae, Nodaviridae, Herpesviridae, Arteriviridae, ...
Ascoviridae, Poxviridae and the recently discovered families Mimiviridae and Marseilleviridae (Iyer et al., 2006; Colson et al ...
Ascoviridae, Phycodnaviridae, Marseilleviridae, and Mimiviridae, as well as still unclassified pithoviruses, pandoraviruses, ...
Ascoviridae and Papillomaviridae (P , 0.05, Fishers exact test). The differences are also displayed in terms of relative ...
At the first step, relationships between the 6 NCLDV families (Poxviridae, Asfarviridae, Irido- and Ascoviridae, Mimiviridae, ... the Ascoviridae and the putative new family represented by the Marseillevirus, did not result in an erosion of the ... except for Poxviridae and Ascoviridae, and possibly, representatives of new families as well [19-23]. Thus, there seems to ...
Roberts, R. J., Belfort, M., Bestor, T., Bhagwat, A. S., Bickle, T. A., Bitinaite, J., Blumenthal, R. M., Degtyarev, S. K., Dryden, D. T. F., Dybvig, K., Firman, K., Gromova, E. S., Gumport, R. I., Halford, S. E., Hattman, S., Heitman, J., Hornby, D. P., Janulaitis, A., Jeltsch, A., Josephsen, J. & 27 others, Kiss, A., Klaenhammer, T. R., Kobayashi, I., Kong, H., Krüger, D. H., Lacks, S., Marinus, M. G., Miyahara, M., Morgan, R. D., Murray, N. E., Nagaraja, V., Piekarowicz, A., Pingoud, A., Raleigh, E., Rao, D. N., Reich, N., Repin, V. E., Selker, E. U., Shaw, P. C., Stein, D. C., Stoddard, B. L., Szybalski, W., Trautner, T. A., Van Etten, J. L., Vitor, J. M. B., Wilson, G. G. & Xu, S. Y., Apr 1 2003, In : Nucleic acids research. 31, 7, p. 1805-1812 8 p.. Research output: Contribution to journal › Review article ...
Family Ascoviridae. Bigot, Y., Asgari, S., Bideshi, D., Cheng, X. W., Federici, B. A. and Renault, S (2011). Family Ascoviridae ... ICTV Virus Taxonomy Profile: Ascoviridae. Asgari, Sassan, Bideshi, Dennis K. , Bigot, Yves, Federici, Brian A., Cheng, Xiao-Wen ... and ICTV Report Consortium (2017) ICTV Virus Taxonomy Profile: Ascoviridae. Journal of General Virology, 98 1: 4-5. doi:10.1099 ...
... family Ascoviridae) are large, enveloped, double-stranded (ds)DNA viruses that attack lepidopteran larvae and pupae, and are ... 2000; Family Ascoviridae . In Virus Taxonomy . Seventh Report of the International Committee on Taxonomy of Viruses . pp 261- ... Ascoviruses (family Ascoviridae) are large, enveloped, double-stranded (ds)DNA viruses that attack lepidopteran larvae and ... 1997a; Particle and genomic characterization of a new member of the Ascoviridae: Diadromus pulchellus ascovirus. J Gen Virol78: ...
Ascoviridae, Baculoviridae, Retroviridae, and Adenoviridae can encode miRNAs or miRNA-like molecules [45, 47]. These viruses ...
Ascoviridae, Ampullaviridae, Asfarviridae, Baculoviridae, Fuselloviridae, Globuloviridae, Guttaviridae, Hytrosaviridae, ...
Family Ascoviridae (organism) {424599004 , SNOMED-CT } Other Relationships No other relationships present. ...
Ascoviridae, Asfarviridae, Baculoviridae, Malacoherpesviridae, Iridoviridae, Nimaviridae, Nudiviridae, Poxviridae, ...
When retroviruses have integrated their own genome into the germ line, their genome is passed on to a following generation. These endogenous retroviruses (ERVs), contrasted with exogenous ones, now make up 5-8% of the human genome.[7] Most insertions have no known function and are often referred to as "junk DNA". However, many endogenous retroviruses play important roles in host biology, such as control of gene transcription, cell fusion during placental development in the course of the germination of an embryo, and resistance to exogenous retroviral infection. Endogenous retroviruses have also received special attention in the research of immunology-related pathologies, such as autoimmune diseases like multiple sclerosis, although endogenous retroviruses have not yet been proven to play any causal role in this class of disease.[8] While transcription was classically thought to occur only from DNA to RNA, reverse transcriptase transcribes RNA into DNA. The term "retro" in retrovirus refers to ...
  • Strikingly, apart from Drosophila and the pea aphid Acyrthosiphon pisum, Diedel-related sequences were exclusively identified in a few insect DNA viruses of the Baculoviridae and Ascoviridae families. (cnrs.fr)
  • Particle and genomic characterization of a new member of the Ascoviridae: Diadromus pulchellus ascovirus. (microbiologyresearch.org)
  • The ascovirus, DpAV4a (family Ascoviridae), is a symbiotic virus that markedly increases the fitness of its vector, the parasitic ichneumonid wasp, Diadromus puchellus, by increasing survival of wasp eggs and larvae in their lepidopteran host, Acrolepiopsis assectella. (nih.gov)
  • Other proteins include DNA dependent RNA polymerase II and transcription factor II B. The following classes are recognized, under which are orders that contain families mentioned in this article: Megaviricetes Pimascovirales Ascoviridae Iridoviridae Marseilleviridae (Pithoviridae? (wikipedia.org)
  • Ascoviruses (family Ascoviridae ) are large, enveloped, double-stranded (ds)DNA viruses that attack lepidopteran larvae and pupae, and are unusual in that they are transmitted by parasitic wasps during oviposition. (microbiologyresearch.org)
  • The family Ascoviridae includes viruses with circular dsDNA genomes of 100-200 kilobase pairs (kbp) characterized by oblong enveloped virions of 200-400 nm in length. (ictvonline.org)
  • The family Ascoviridae was erected almost a decade ago to accommodate a number of large double-stranded DNA viruses that are pathogenic to larvae and pupae of lepidopterous insects, primarily in the family Noctuidae . (caister.com)
  • Characteristics of the family Ascoviridae . (ictvonline.org)
  • Members of the family Ascoviridae come in different shapes. (wikipedia.org)