Consulta: subjectFacets:"Viruses"
Registros recuperados: 49
Data/hora: 07/06/2024 01:04:38

The Mathematical Biology of Human Infections
Provedor de dados: 7
Autores: Nowak, Martin A; Institute for Advanced Study; nowak@ias.edu.
Humans are constant victims of infectious diseases. Biomedical research during this century has led to important insights into the molecular details of immune defense. Yet, many questions relating to disease require a quantitative understanding of the complex systems that arise from the nonlinear interactions between populations of immune cells and infectious agents. Exploration of such questions has lead to a newly emerging field of mathematical biology describing the spread of infectious agents both within and between infected individuals. This essay will discuss simple and complex models of evolution, and the propagation of virus and prion infections. Such models provide new perspectives for our understanding of infectious disease and provide guidelines...
Tipo: Peer-Reviewed Reports
Palavras-chave: CTL response; HIV; Antivirals; Epidemiology; Immune response; Infectious diseases; Mathematical biology; Models of evolution; Prions; Resistance; Treatment; Viruses.
Ano: 1999

PRIMER REGISTRO DE ABUNDANCIA VIRAL EN BAHIA COLIUMO Y PLATAFORMA CONTINENTAL FRENTE A CHILE CENTRAL
Provedor de dados: 72
Autores: Chiang,Oscar E; Middelboe,Mathias; Quiñones,Renato A.
The abundance of virus like particles (VLP) was determined for the first time in the water column and sediment of Coliumo Bay and on a station on the continental shelf off central Chile. The VLP decreases with depth in the water column with a surface maximum of 4.1 x 10(7) VLP mL-1 and 5.87 x 10(7) VLP mL-1 on the shelf and Coliumo Bay, respectively. In the sediments the VLP ranged between 4.28 x 10(8) VLP mL (Coliumo Bay) and 1.01 x 10(8) VLP mL (shelf). The abundance of VLP is higher at the Bay both in the water column and in the sediment.
Tipo: Journal article
Palavras-chave: Viruses; Virus-like particles; Prokaryotes; Humboldt Current System.
Ano: 2007
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382007000100014

Comportamento em relacao as doencas e desempenho agronomico de cultivares de maracujazeiro-azedo cultivadas sem agrotoxicos no Distrito Federal.
Provedor de dados: 14
Autores: JUNQUEIRA, N. T. V.; ANJOS, J. de R. N. dos; SILVA, A. P. de O.; CHAVES, R. da C.; GOMES, A. C.
bitstream/CPAC-2009/24614/1/bolpd_38.pdf
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Plant diseases; Bacterioses; Anthracnosis; Agronomic characteres; Integrated control.; Antracnose; Bacteriose; Características Agronômicas; Controle Integrado; Doença de Planta; Fungo; Maracujá; Passiflora Edulis; Rendimento; Vírus.; Verrugose; Variedade Resistente; Fungi; Disease resistance; Passion fruits; Viruses; Yields.
Ano: 2002
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/559760

Coral-associated viruses and bacteria in the Ha Long Bay, Vietnam
Provedor de dados: 5
Autores: Thu Pham, The; Thuoc Chu, Van; Viet Ha Bui, Thi; Thuy Nguyen, Thanh; Huy Tran, Quang; Ngoc Mai Cung, Thi; Bouvier, Corinne; Brune, Justine; Villeger, Sebastien; Bouvier, Thierry; Bettarel, Yvan.
Viruses inhabiting the surface mucus layer of scleractinian corals have received little ecological attention so far. Yet they have recently been shown to be highly abundant and could even play a pivotal role in coral health. A fundamental aspect that remains unresolved is whether their abundance and diversity change with the trophic state of their environment. The present study examined the variability in the abundance of viral and bacterial epibionts on 13 coral species collected from 2 different sites in the Ha Long Bay, Vietnam: one station heavily affected by anthropogenic activity (Cat Ba Island) and one protected offshore station (Long Chau Island). In general, viral abundance was significantly higher in coral mucus (mean = 10.6 +/- 2.0 x 10(7)...
Tipo: Text
Palavras-chave: Viruses; Coral-associated bacteria; Mucus; Symbionts; Coral reefs.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00627/73870/73680.pdf

Particules virales de type Bacilovirus observees chez le crabe Carcinus maenas.
Provedor de dados: 5
Autores: Bazin, F.; Monsarrat, P.; Bonami, Jean-robert; Croizier, G.; Meynadier, G.; Quiot, J.m.; Vago, C.
A new virus from the Crab Carcinus maenas has been found in the nuclei of conjunctive and blood cells. Its localization, morphology, size, morphogeny relate it to the Baculovirus group. By some aspects it appears to be related closer to the insect viruses from Oryctes rhinoceros, and to red mite viruses from Panonychus ulmi and P.citri than to the nuclear polyhedrosis of the pink shrimp Penaeus duorarum.
Tipo: Text
Palavras-chave: Penaeus duorarum; Panonychus citri; Panonychus ulmi; Oryctes rhinoceros; Carcinus maenas; Viruses; Viral diseases.
Ano: 1974
URL: http://archimer.ifremer.fr/doc/1974/publication-2041.pdf

Viruses infecting marine molluscs
Provedor de dados: 5
Autores: Arzul, Isabelle; Corbeil, Serge; Morga, Benjamin; Renault, Tristan.
Although a wide range of viruses have been reported in marine molluscs, most of these reports rely on ultrastructural examination and few of these viruses have been fully characterized. The lack of marine mollusc cell lines restricts virus isolation capacities and subsequent characterization works. Our current knowledge is mostly restricted to viruses affecting farmed species such as oysters Crassostrea gigas, abalone Haliotis diversicolor supertexta or the scallop Chlamys farreri. Molecular approaches which are needed to identify virus affiliation have been carried out for a small number of viruses, most of them belonging to the Herpesviridae and birnaviridae families. These last years, the use of New Generation Sequencing approach has allowed increasing...
Tipo: Text
Palavras-chave: Molluscs; Viruses; Diseases; Herpesviridae; Bivalve; Abalone.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00371/48206/48319.pdf

Development of genomic probes for detection of hepatitis A virus and enteroviruses in shellfish
Provedor de dados: 5
Autores: Apaire, M; Leguyader, F; Besse, B; Billaudel, S.
The development of molecular biology techniques has modified research procedures for certain viruses, particularly hepatitis A virus (HAV) and enteroviruses. Accordingly, we designed cDNA and RNA genomic probes to detect viruses in shellfish in the environment. Better sensitivity was noted with RNA than cDNA probes: only 17/83 shellfish samples were positive with HAV and enterovirus DNA probes, where as 42/83 were positive with HAV and enterovirus RNA probes.
Tipo: Text
Palavras-chave: Mollusca; Enterovirus; Hepatitis A virus; Picornaviridae; RNA probes; DNA probes; Seafood; Biology; Sensors; DNA; RNA; Viruses; Detection; Marine molluscs; Shellfish.
Ano: 1992
URL: http://archimer.ifremer.fr/doc/1992/acte-1613.pdf

Status and future of molluscan pathology in North America
Provedor de dados: 5
Autores: Elston, R.
Serious diseases have plagued the North American oyster industry for at least 75 years. These include Malpeque Bay disease, M.S.X. disease, perkinsiosis, nocardiosis, oyster velar virus disease and others. Some of these diseases have proven intractable since they are caused by infectious agents which have not yet been transmitted in the laboratory or which cannot yet be cultivated outside of the host animal. The increased importance of aquaculture of these species and the advent of modern molecular technologies in biology have provided both the impetus and the means to now advance the science of molluscan pathology.
Tipo: Text
Palavras-chave: North America; Viruses; Viral diseases; Mollusc culture.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1475.pdf

Depuration centre management. Course notes
Provedor de dados: 5
Autores: O'Carroll, Terence; Boulter, Mark; Seaver, Mary; Masson, Daniel; O'Driscoll, Michael; Roden, Cillian.
The purpose of this course is to train and familiarise people, who are going to build, have just built or are about to modernise a purification plant, in the latest technology available to the industry and also to train people so that they can effectively run a depuration centre.  ln general the course aims to :  - Give participants practical experience of different systems prior to committing themselves to a particular system.  - Enable participants to compare systems.  - Provide a minimum training qualification to run an establishment which is essentially a facility to guarantee health and safety of products to the consumer.  - Provide an overview from bacteria testing to plant lay out etc.  The structure of the course is in modules, morning and...
Tipo: Text
Palavras-chave: Shellfish depuration; Purification; Bacteria; Viruses.
Ano: 1995
URL: http://archimer.ifremer.fr/doc/00140/25082/23192.pdf

Viral contamination and depuration of oysters under field conditions
Provedor de dados: 5
Autores: Boher, S; Piclet, Guy; Beril-stien, S; Masson, Daniel; Delonce, R; Biziagos, E; Schwartzbrod, L.
Shellfish consumption is clearly associated with the transmission of enteric viruses. The channel of transmission of enteric viruses to human beings could be decreased particularly if the systems of depuration of shellfish were optimized, standardized and if their viral efficiency was controlled. The purpose of this work was to study the contamination of oysters and to assess the efficiency of several depuration processes. Our study have demonstrated that in some cases, 50% of oysters samples contain enteric viruses or H.A.V. antigen and the quantities of viruses range from 17 to 246 FF for the rotaviruses and from 124 to 200 for the enteroviruses per 100 g of tissue. According to our results, the exclusive use of a bacteriological criterium to determine...
Tipo: Text
Palavras-chave: Rotavirus; Hepatitis A virus; Enterovirus; Crassostrea gigas; Bivalvia; Seafood; Bioassays; Cell culture; Viruses; Self purification; Viral diseases; Shellfish.
Ano: 1992
URL: http://archimer.ifremer.fr/doc/1992/acte-1615.pdf

Inadequacy of bacterial indicators for assessing elimination rates of viruses from molluscan shellfish
Provedor de dados: 5
Autores: Burkhardt, W; Watkins, W; Rippey, S.
The reported incidence of shellfish-borne illness in the United States increased dramatically during the last decade. Most of the outbreaks are attributed to diseases of viral aetiology. These human health problems result primarily from the ingestion of raw shellfish which have accumulated enteric pathogens from environmental waters or from wet storage facilities. Our studies have demonstrated that hard-shelled clams concentrate different indicator micro-organisms at variable and unpredictable rates during the year. In temperate waters, this has been observed at two abbreviated periods in mid-spring and again in late fall when accumulation rates increased dramatically. Moreover, these rates were not generally coincident for viruses and bacteria. In...
Tipo: Text
Palavras-chave: Mollusca; Intestinal microflora; Phages; Seafood; Public health; Diseases; Marine molluscs; Viruses; Shellfish; Self purification; Bacteria; Indicator species.
Ano: 1992
URL: http://archimer.ifremer.fr/doc/1992/acte-1609.pdf

Infectious pathology in mollusc and shrimp hatcheries
Provedor de dados: 5
Autores: Mialhe, Eric.
Development of aquaculture has been linked to zootechnical mastering of larval production in hatcheries. Regular and excessive use of antibiotics (antifungal or antibacterial) may thus also be reduced, permitting to limit release of these products in sea-water and, consequently, avoiding progressive selection of resistant-strains.
Tipo: Text
Palavras-chave: Viruses; Infectious diseases; Epidemiology; Pathogens; Bacterial diseases; Pathology; Larval development; Mollusc culture; Shrimp culture.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1487.pdf

Viral and Bacterial Epibionts in Thermally-Stressed Corals
Provedor de dados: 5
Autores: Nguyen-kim, Hanh; Bouvier, Thierry; Bouvier, Corinne; Ngoc Bui, Van; Le-lan, Huong; Bettarel, Yvan.
The periodic rise in seawater temperature is one of the main environmental determinants of coral bleaching. However, the direct incidence of these episodic thermal anomalies on coral-associated microbiota and their subsequent effects on coral health are still not completely understood. In this study, we investigated the dynamics of three main microbial communities of the coral holobiont (e.g., Symbiodinium, bacteria and viruses), during an experimental thermal stress (+4 degrees C) conducted on the scleractinian Fungia repanda. The heat-treatment induced coral bleaching after 11 days and resulted in a final elevation of ca. 9, 130 and 250-fold in the abundance of mucosal viruses, bacteria, and Symbiodinium, respectively. On the contrary, the proportion of...
Tipo: Text
Palavras-chave: Coral bleaching; Thermal stress; Bacteria; Viruses; Holobiont; Vietnam.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00626/73823/73642.pdf

Mise en evidence de particules d'allure virale associees aux noyaux des cellules mesodermiques de la zone germinative testiculaire du crabe Rhithropanopeus harrisii (Gould) (Brachyoure, Xanthide).
Provedor de dados: 5
Autores: Payen, Geneviève G.; Bonami, Jean-robert.
Ultrastructural study of the testicular germinative zone in the crab R. harrisii has led to observation of virus-like particles exclusively located in the nuclei of mesodermal cells encompassing primary spermatogonia. These particles are related to the group of viruses of the herpes type.
Tipo: Text
Palavras-chave: Rhithropanopeus harrisii; Viruses; Testes; Viral diseases.
Ano: 1980
URL: http://archimer.ifremer.fr/doc/1980/publication-1940.pdf

Diseases of cultured prawns in Australia
Provedor de dados: 5
Autores: Lester, R; Paynter, J.
Plebejus baculovirus and other MBV-related viruses have been found in Penaeus plebejus, P. monodon and P. merguiensis . They appear highly pathogenic in certain situations currently undefined. We have found Hepatopancreatic Parvo-like Virus (&lt; hpv) in wild P. esculentus and P. merguiensis but not yet in cultured prawns. The amphophilic intranuclear inclusion bodies we find in P. esculentus do not appear to have a viral cause.
Tipo: Text
Palavras-chave: Australia Coasts; Penaeidae; Viral diseases; Fungal diseases; Gills; Viruses; Hatcheries; Gill disease.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1458.pdf

Recent advances in Australian prawns diseases and pathology
Provedor de dados: 5
Autores: Owens, L; Hall, M.
Disease is always limiting in animal production and new syndromes occur in fledgling industries. This paper describes the latest findings in this area.
Tipo: Text
Palavras-chave: Vibrio damsela; Macrobrachium rosenbergii; Malacostraca; Bacteria; Septicaemia; Aetiology; Viruses; Juveniles; Ovaries; Larvae; Pathology; Viral diseases.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1461.pdf

A review of the known hosts geographical range and current diagnostic procedures for the virus diseases of cultured penaeid shrimp
Provedor de dados: 5
Autores: Lightner, D; Bell, T; Redman, R.
At least six virus diseases are presently known in cultured penaeid shrimp. Each of these six penaeid virus diseases (BP = Baculovirus penaei ; MBV = Penaeus monodon -type baculovirus (including PBV of Australian penaeids); BMN = baculoviral midgut gland necrosis; HPV = hepatopancreatic parvo-like virus; IHHNV = infectious hypodermal and hematopoietic necrosis virus; and REO = reo-like virus of the hepatopancreas) may be comprised by a multitude of individual strains, some of which are highly pathogenic to some penaeids, while being of little importance to others.
Tipo: Text
Palavras-chave: Baculovirus penaei; Penaeus japonicus; Penaeus monodon; Malacostraca; Marine crustaceans; Necroses; Infectious diseases; Viruses; Diseases.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1481.pdf

Sequential resuspension of biofilm components (viruses, prokaryotes and protists) as measured by erodimetry experiments in the Brouage mudflat (French Atlantic coast)
Provedor de dados: 5
Autores: Dupuy, Christine; Mallet, Clarisse; Guizien, Katell; Montanie, Helene; Breret, Martine; Mornet, Francoise; Fontaine, Camille; Nerot, Caroline; Orvain, Francis.
Resuspension thresholds in terms of friction velocity were experimentally quantified for the prokaryotes, protists and for the first time, viruses of intertidal mudflat biofilms. Differences in resuspension thresholds could be related to the type, behaviour and size of microorganisms and their association with particles. Free microorganisms (viruses, bacteria and some nanoflagellates) were resuspended by weak flow at friction velocities lower than 2 cm s- 1. Chlorophyll a, some nanoflagellates and attached bacteria were resuspended together with the bed’s muddy sediment, which required friction velocities larger than 3 cm s- 1. Diatoms smaller than 60 μm were resuspended at velocities between 3 and 5 cm s- 1, while those larger than 60 μm were resuspended...
Tipo: Text
Palavras-chave: Viruses; Microorganisms; Resuspension; Benthic-pelagic coupling; Spatial distribution; Mudflat.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00168/27922/26196.pdf

Mechanisms of virus resistance and antiviral activity of snake venoms
Provedor de dados: 80
Autores: Rivero,JVR; de Castro,FOF; Stival,AS; Magalhães,MR; Carmo Filho,JR; Pfrimer,IAH.
Viruses depend on cell metabolism for their own propagation. The need to foster an intimate relationship with the host has resulted in the development of various strategies designed to help virus escape from the defense mechanisms present in the host. Over millions of years, the unremitting battle between pathogens and their hosts has led to changes in evolution of the immune system. Snake venoms are biological resources that have antiviral activity, hence substances of significant pharmacological value. The biodiversity in Brazil with respect to snakes is one of the richest on the planet; nevertheless, studies on the antiviral activity of venom from Brazilian snakes are scarce. The antiviral properties of snake venom appear as new promising therapeutic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Snake venom; Viruses; Antiviral agents.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992011000400005

Virucidal effect of disinfectants on several animal viruses
Provedor de dados: 19
Autores: Nomura, Yasuharu; Ohta, Chikako; Shirahata, Toshikazu; Goto, Hitoshi; 野村, 泰春; 太田, 千佳子; 白幡, 敏一; 後藤, 仁.
Palavras-chave: Disinfectants; Viruses.
Ano: 1991
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1638

Comportamiento de los virus de crustáceos de declaración obligatoria de la OIE en Litopeneaeus vannamei de cultivo en Cuba en el período 2003-2009
Provedor de dados: 20
Autores: Artiles, A.; Rubio, M.; Gonzalez, E.; Laria, R.; Silveira, R.
Uno de los principales problemas del cultivo del camarón blanco del Pacífico, Litopeneaeus vannamei, es la susceptibilidad de esta especie a diversas enfermedades virales, que pueden conducir a grandes mortalidades y/o pérdidas económicas. En este trabajo se reportan los resultados obtenidos en la ejecución de los muestreos periódicos y chequeos de cuarentenas correspondientes al programa de vigilancia, desde la primera introducción de esta especie en Cuba en 2003 hasta el 2009. Para ello se emplearon técnicas de análisis en fresco, histológicas y de biología molecular. En este período, no se detectó ninguno de los virus de crustáceos que son de declaración obligatoria por la Organización Mundial de la Salud Animal (OIE, de sus siglas en francés): el virus...
Tipo: Journal Contribution
Palavras-chave: Viruses; Cultures.
Ano: 2011
URL: http://hdl.handle.net/1834/4621

Comportamiento de los virus de crustáceos de declaración obligatoria de la OIE en Litopeneaeus vannamei de cultivo en Cuba en el período 2003-2009
Provedor de dados: 20
Autores: Gonzalez, E.; Rubio, M.; Laria, R.; Silveira, R.; Artiles, A.
Uno de los principales problemas del cultivo del camarón blanco del Pacífico, Litopeneaeus vannamei, es la susceptibilidad de esta especie a diversas enfermedades virales, que pueden conducir a grandes mortalidades y/o pérdidas económicas. En este trabajo se reportan los resultados obtenidos en la ejecución de los muestreos periódicos y chequeos de cuarentenas correspondientes al programa de vigilancia, desde la primera introducción de esta especie en Cuba en 2003 hasta el 2009. Para ello se emplearon técnicas de análisis en fresco, histológicas y de biología molecular. En este período, no se detectó ninguno de los virus de crustáceos que son de declaración obligatoria por la Organización Mundial de la Salud Animal (OIE, de sus siglas en francés): el virus...
Tipo: Journal Contribution
Palavras-chave: Viruses; Crustaceans.
Ano: 2011
URL: http://hdl.handle.net/1834/4141

Summary Proceedings of the Second Coordinators' Meeting on Peanut Stripe Virus
Provedor de dados: 30
Palavras-chave: Viruses; Groundnuts; Genotypes; Yield losses; ELISA; Peptides; Quarantine; Legumes; Germplasm; HPLC.
Ano: 1989
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/4070

Preliminary Observations on Livestock Productivity in Sheep Fed Exclusively on Haulms from Eleven Cultivars of Groundnut
Provedor de dados: 30
Autores: Blümmel, M.
Palavras-chave: Body weight; Groundnuts; Organic matter; Viruses; Aromatic compounds; Nitrogen; Germplasm; Metabolism; Quality; Biological phenomena.
Ano: 2005
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3255

Groundnut Variety ICGV 86590
Provedor de dados: 30
Palavras-chave: Necrosis; Viruses; Fungi; Oilseeds; Tolerance; Wet season; Germplasm; Groundnuts; Diseases; Cropping systems.
Ano: 1992
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3800

coordinated research on groundnut of Rosette virus disease
Provedor de dados: 30
Autores: D. McDonald.
Palavras-chave: Groundnuts; Viruses; RNA; Grafting; ELISA; Genotypes; Backcrossing; Breeds (animals); Resistance varieties; Scions.
Ano: 1987
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3144

Variation in sensitivity to salinity in groundnut cultivars during seed germination and early seedling growth
Provedor de dados: 30
Autores: Singh,R.
Palavras-chave: Viruses; Groundnuts; Tolerance; Vegetative stage; Water; Genotypes; Seed testing; Protocols; Germinability; Irrigation water.
Ano: 2007
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3357

Groundnut Variety ICGV 87141 (ICGS 76) •
Provedor de dados: 30
Palavras-chave: Oilseeds; Viruses; Necrosis; Unsaturated fatty acids; Groundnuts; Wet season; Cropping systems; Yields; Humus; Tolerance.
Ano: 1990
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3793

Working together on groundnut virus diseases
Provedor de dados: 30
Autores: D.V.R.
Palavras-chave: Viruses; Groundnuts; RNA; Genes; ELISA; Genotypes; Transgenics; PCR; Genetic structures.
Ano: 1994
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/4178

Groundnut Virus Diseases in Africa
Provedor de dados: 30
Autores: International Crops Research Institute for the Semi-Arid Tropics (ICRISAT).
Palavras-chave: Groundnuts; Viruses; Genotypes; RNA; Quarantine; Breeds (animals); Genetic markers; Genes; Recessive genes; Resistance varieties.
Ano: 1991
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/4093

Groundnut Elite Germplasm ICGV 87157 [ICG (FDRS) 4]
Provedor de dados: 30
Palavras-chave: Necrosis; Tolerance; Viruses; Groundnuts; Germplasm; Breeds (animals); Diseases; Fungi; Wet season; Minerals.
Ano: 1991
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3798

Groundnut Elite Germplasm ICGV 86031
Provedor de dados: 30
Palavras-chave: Necrosis; Viruses; Germplasm; Photoperiodicity; Genotypes; Minerals; Groundnuts; Wet season; Iron; Tolerance.
Ano: 1992
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3829

Working Together on Groundnut Virus Diseases
Provedor de dados: 30
Autores: D.V.R.( editor).
Palavras-chave: Viruses; Groundnuts; RNA; Genes; ELISA; Genotypes; Transgenics; PCR; Genetic structures.
Ano: 1994
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3121

Farmer participatory varietal selection in groundnut - a success story in Anantapur
Provedor de dados: 30
Autores: Nigam, S.N.
Palavras-chave: Viruses; Groundnuts; Weather hazards; Animal nutrition; Necrosis; Wet season; Seed production; Body weight; Yields; Precipitation.
Ano: 2005
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3244

Field diagnosis of groundnut diseases
Provedor de dados: 30
Autores: P.
Palavras-chave: Fungi; Groundnuts; Necrosis; Fruits; Diseases; Mycoplasma; Viruses; Bacteria; Environmental factors.
Ano: 1992
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/4249

Groundnut Elite Germplasm ICGVs 86155, 86156, 86158, 87378, and 87921
Provedor de dados: 30
Palavras-chave: Viruses; Genotypes; Poultry equipment; Germplasm; Curing (processing); Wet season; Breeds (animals); Dormancy; Seasons; Proteins.
Ano: 1996
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3877

Groundnut Variety ICGV 87121 (ICGS 5)
Provedor de dados: 30
Palavras-chave: Oilseeds; Groundnuts; Viruses; Wet season; Summer; Germplasm; Yields; Performance; Cropping systems; Seasons.
Ano: 1991
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3797

Groundnut Variety ICGV 87160 [ICG(FDRS) 10]
Provedor de dados: 30
Palavras-chave: Necrosis; Viruses; Tolerance; Wet season; Groundnuts; Oilseeds; Germplasm; Humus; Minerals; Diseases.
Ano: 1991
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3799

Coordinated Research on Groundnut Rosette Virus Disease
Provedor de dados: 30
Palavras-chave: Groundnuts; Viruses; RNA; Grafting; ELISA; Genotypes; Backcrossing; Breeds (animals); Resistance varieties; Scions.
Ano: 1988
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/4054

Groundnut Elite Germplasm I C G V - S M 83708
Provedor de dados: 30
Palavras-chave: Phenotypes; Viruses; Breeds (animals); Germplasm; Humus; Groundnuts; Hides and skins; Research methods; Yields; Confectionery.
Ano: 1994
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3856

Bud Necrosis:Bud Necrosis: A Disease of Groundnut Caused by Tomato Spotted Wilt Virus
Provedor de dados: 30
Autores: D.V.R.
Palavras-chave: Necrosis; ELISA; Groundnuts; Sucrose; Amines; Insecticides; Cytoplasmic organelles; Poultry equipment; Viruses; Antibiotics.
Ano: 1990
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/4665

Enteric viruses in turkey flocks: a historic review
Provedor de dados: 89
Autores: Alavarez,JM; Ferreira,CSA; Ferreira,AJP.
In this review, diagnostic techniques and viral agents involved in enteric diseases affecting turkeys are described. Data from field observations and laboratory researches have been reported in turkey flocks for over 70 years, and several viruses have been identified. After a period of 30 years of inoculation experiments and neutralization studies, adequate visualization of the viruses was achieved using electronic microscopy. During the following years, several studies were then conducted to isolate and classify those viruses using cell-culture, embryo-propagation, serological tests, genome electropherotyping by polyacrylamide gel electrophoresis of double-stranded RNA viruses, and recently, nucleic acid studies. Thus, since the 1990s, the nucleic-acid...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Turkey; Enteritis; Viruses; Poults; Diagnosis.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000300001

Litter characteristics and pododermatitis incidence in broilers fed a sorghum-based diet
Provedor de dados: 89
Autores: Carvalho,CMC; Litz,FH; Fernandes,EA; Silveira,MM; Martins,JM da S; Fonseca,LA; Zanardo,JA.
The aim of this study was to evaluate the incidence of footpad dermatitis and quality of broilers litter fed with sorghum grain and diets based in corn. It was used 544 male and female chicks, distributed in a completely randomized design with two treatments and eight replications. The chicken feed was formulated and produced from corn, soybean meal and sorghum grain. In the formulation were kept constant levels of energy and protein in accordance with the following treatments: A. Control (diet based on corn and soybean meal); B. Grain sorghum (Whole Sorghum + soybean meal). At 35 and 42 days were evaluated mineral matter (A %), calcium (Ca%), phosphorus (P%), pH and dry matter (DM %) of the poultry litter. To evaluate the footpad dermatitis were evaluated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Turkey; Enteritis; Viruses; Poults; Diagnosis; Calcium; Environmental impact; Phosphorus.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000300010

Crop losses in Brazilian cassava varieties induced by the Cassava common mosaic virus
Provedor de dados: 63
Autores: Venturini,Marcela Tonini; Araújo,Taylane da Silva; Abreu,Emanuel Felipe Medeiros; Andrade,Eduardo Chumbinho de; Santos,Vanderlei da Silva; Silva,Marcos Roberto da; Oliveira,Eder Jorge de.
ABSTRACT Despite the widespread distribution of the Cassava common mosaic virus (CsCMV) in Brazil, little is known about the losses it causes in yield. The effect of CsCMV on different varieties was evaluated by reference to several agronomic traits. Four field trials were established in 2012/2013 and 2013/2014 using six varieties of cassava. Following mechanical inoculation with CsCMV, the presence of the virus was confirmed using the ELISA assay. The evaluated traits were plant height (PH), dry matter content (DMC), harvest index (HI), aerial part yield (APY), root yield (RoY), and starch yield (StY) in both inoculated and non-inoculated plants. Overall, the presence of the virus contributed little to the reduction in PH, HI, and DMC across the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Manihot esculenta Crantz; Viruses; Root yield; Disease.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000600520

Screening of Lycopersicon sp. accessions for resistance to Pepper yellow mosaic virus
Provedor de dados: 63
Autores: Juhász,Ana Cristina Pinto; Silva,Derly José Henriques da; Zerbini Júnior,Francisco Murilo; Soares,Bruno Oliveira; Aguilera,George Alberto Hial.
The tomato is a crop of great economical importance, however it is susceptible to a large number of pests and diseases, including viral disease for which the best control strategy is genetic resistance. The disease, caused by Pepper yellow mosaic virus (PepYMV) has become a recent problem. Consequently, the idea of this work was to screen 376 accessions of Lycopersicon sp. to find possible sources of resistance to PepYMV. Out of 355 accessions of L. esculentum inoculated with PepYMV, 52 did not express symptoms. However, the virus reached high concentration in the tissues as measured by indirect ELISA, and therefore they were not considered as safe sources of resistance. Among 21 accessions of wild Lycopersicon species, one of L. hirsutum was shown to be...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lycopersicon hirsutum; Genetic resources; Viruses; Potyvirus.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162006000500014

Genetic control of disease resistance in corn
Provedor de dados: 106
Autores: Renfro, B.L.
Palavras-chave: Corn; Maize; Genetic control; Plant breeding; Disease resistance; Seedling diseases; Stalk rot; Ear rots; Foliar diseases; Rusts; Smuts; Downy mildew; Bacterial diseases; Viruses; Mycoplasma-like diseases; ข้าวโพด; การถ่ายทอดสู่รุ่นลูก; เชื้อโรค; โรคราน้ำค้าง; โรคใบไหม้; โรคราสนิม; ไวรัส; โรคลำต้นเน่า; แบคทีเรีย; โรคราเขม่าดำ; โรคที่ติดมากับเมล็ด; โรคลำต้นเน่า; โรคฝักเน่า; โรคทางใบ.
Ano: 1979
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3952

Challenges in shrimp aquaculture due to viral diseases: distribution and biology of the five major penaeid viruses and interventions to avoid viral incidence and dispersion
Provedor de dados: 58
Autores: Seibert,Caroline H.; Pinto,Aguinaldo R.
Shrimp aquaculture has been dramatically affected by many pathogenic diseases, mainly caused by five viruses: IHHNV, YHV, TSV, WSSV, and IMNV. Here we provide a state-of-the-art overview of these shrimp viruses, with emphasis on distribution, pathology, morphology, and genomic organization, in addition to current diagnostic methods and intervention practices.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Shrimp aquaculture; Viruses; Diagnostic methods; Disease control.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000300002

Duplex nested-PCR for detection of small ruminant lentiviruses
Provedor de dados: 58
Autores: Marinho,Rebeca C.; Martins,Gabrielle R.; Souza,Kelma C.; Sousa,Ana Lídia M.; Silva,Sabrina Tainah C.; Nobre,Juliana A.; Teixeira,Maria F.S.
Abstract Small ruminant lentiviruses (SRLV) have high genetic variability which results in different viral strains around the world. This create a challenge to design sensible primers for molecular diagnosis in different regions. This work proposes a protocol of duplex nested-PCR for the precise diagnosis of SRLV. The technique was designed and tested with the control strains CAEV Co and MVV 1514. Then, field strains were submitted to the same protocol of duplex nested-PCR. Blood samples of sheep and goats were tested with AGID and nested PCR with specific primers for pol, gag and LTR. The AGID results showed low detection capacity of positive animals, while the nested PCR demonstrated a greater capacity of virus detection. Results demonstrated that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Standardization; Multiplex; Viruses; CAEV; MVV.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000500083

Resistance of potato clones to necrotic recombinant strains of potato virus y (pvy)
Provedor de dados: 64
Autores: Ribeiro,Silvia Regina Rodrigues de Paula; Pinto,César Augusto Brasil Pereira; Costa,Suellen Bárbara Ferreira Galvino; Menezes,Mariney de; Figueira,Antonia dos Reis.
The Ry adg allele is widely used by breeders to confer extreme resistance to all strains of PVY. However, the necrotic strain has increased recombination resulting in recent considerable losses in productivity. Thus far, not all necrotic recombinant strains of PVY have been tested for their reaction to the Ry gene. The objective of this study was to identify potato clones carrying the resistant allele and to assess their reaction to the following recombinant strains: NTN (PVY NTN), Wilga (PVY N-Wi), and "curly top" (PVY E). Advanced clones from the potato breeding program at Universidade Federal de Lavras were evaluated through a specific molecular marker for the Ry adg allele. The clones carrying the resistance allele were grafted on tobacco plants...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Solanum tuberosum; Viruses; Breeding; Genetic resistance.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542014000400004