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Author : A. van Kammen
Publisher :
ISBN 13 :
Total Pages : 4 pages
Book Rating : 4.:/5 (668 download)
Download or read book Morphology of Tomato Spotted Wilt Virus written by A. van Kammen and published by . This book was released on 1966 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Gad Loebenstein
Publisher : Academic Press
ISBN 13 : 0123943140
Total Pages : 596 pages
Book Rating : 4.1/5 (239 download)
Download or read book Viruses and Virus Diseases of Vegetables in the Mediterranean Basin written by Gad Loebenstein and published by Academic Press. This book was released on 2012-06-25 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume of Advances in Virus Research focuses on mycoviruses. The authors and reviews represent the most current and cutting-edge research in the field. A broad range of research is presented from research experts. Contributions from leading authorities Informs and updates on all the latest developments in the field
Author : Richard J. M. Kormelink
Publisher :
ISBN 13 : 9789054852285
Total Pages : 134 pages
Book Rating : 4.8/5 (522 download)
Download or read book Structure and Expression of the Tomato Spotted Wilt Virus Genome written by Richard J. M. Kormelink and published by . This book was released on 1994 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Population Genetic Analysis of Tomato Spotted Wilt Virus (TSWV) on Peanut in North Carolina and Virginia written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Exploring the genetic diversity and evolutionary history of plant viruses is critical to understanding their ecology and epidemiology. Tomato spotted wilt virus (TSWV) is an ambisense RNA virus that infects over 1000 species of plants and has been shown to reassort its genome. To further investigate this virus, maximum-likelihood and population genetics-based methods were used to investigate the population structure, genetic diversity, and sources of genetic variation in field isolates of TSWV from peanut in North Carolina and Virginia. Selected regions of the nucleocapsid, movement, and RNA-dependent RNA polymerase genes were amplified and sequenced to identify haplotypes and infer genetic relationships between isolates of TSWV with heuristic methods. The haplotype structure of each locus consisted of one or two predominant haplotypes and more than 100 haplotypes represented by a single isolate. No specific haplotypes or clades were associated with geographic area, peanut cultivar or year. The population was panmictic at the regional level and high levels of genetic diversity were observed among isolates. There was evidence for negative selection acting upon each locus and maximum-likelihood analyses indicated that exponential growth was occurring in the population. The results of compatibility analyses and the persistence of specific gene sequences in isolates collected over three field seasons suggest that recombination was occurring in the population. Phylogenetic analysis supports that each locus has an independent evolutionary history. Also, high diversity in viruses has been attributed to the occurrence of recombination and mutation To investigate recombination in TSWV, matrix compatibility and ancestral recombination methods were used to detect, quantify, and reconstruct the history of recombination in three genes of TSWV in isolates collected from three cultivars of peanut (Gregory, NC12C, and Perry) sampled in multiple years. Site commonalities among the i.
Author : Bruce L. Parker
Publisher : Springer Science & Business Media
ISBN 13 : 1489914099
Total Pages : 606 pages
Book Rating : 4.4/5 (899 download)
Download or read book Thrips Biology and Management written by Bruce L. Parker and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 606 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thrips (fhysanoptera) are very small insects, widespread throughout the world with a preponderance of tropical species, many temperate ones, and even a few living in arctic regions. Of the approximately 5,000 species so far identified, only a few hundred are crop pests, causing serious damage or transmitting diseases to growing crops and harvestable produce in most countries. Their fringed wings confer a natural ability to disperse widely, blown by the wind. Their minute size and cryptic behavior make them difficult to detect either in the field or in fresh vegetation transported during international trade of vegetables, fruit and ornamental flowers. Many species have now spread from their original natural habitats and hosts to favorable new environments where they often reproduce rapidly to develop intense damaging infestations that are costly to control. Over the past decade there have been several spectacular examples of this. The western flower thrips has expanded its range from the North American continent to Europe, Australia and South Africa. Thrips palmi has spread from its presumed origin, the island of Sumatra, to the coast of Florida, and threatens to extend its distribution throughout North and South America. Pear thrips, a known orchard pest of Europe and the western United States and Canada has recently become a major defoliator of hardwood trees in Vermont and the neighboring states. Local outbreaks of other species are also becoming problems in field and glasshouse crops as the effectiveness of insecticides against them decline.
Author : Anna E. Whitfield
Publisher :
ISBN 13 :
Total Pages : 186 pages
Book Rating : 4.:/5 (89 download)
Download or read book Tomato Spotted Wilt Virus Acquisition by Thrips written by Anna E. Whitfield and published by . This book was released on 2004 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Aiming Wang
Publisher : Humana
ISBN 13 : 9781071618370
Total Pages : 0 pages
Book Rating : 4.6/5 (183 download)
Download or read book Plant Virology written by Aiming Wang and published by Humana. This book was released on 2022-12-29 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume discusses traditional and current techniques that are successfully used to diagnose plant viruses and study molecular plant-virus interactions. The chapters in this book cover topics such as in vivo detection of double-stranded RNA, developing rice mutant using CRISPR-Cas9-based technology, protein-protein interaction assays, purification and transfection of protoplasts, protocols for gene silencing, and transmission electron microscopy. Written in the highly successful Methods in Molecular Biology series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls. Cutting-edge and practical, Plant Virology: Methods and Protocols is a valuable resource for plant pathologists, microbiologists, virologists, graduate students, and teachers who are interested in learning more about the developments in plant virology research.
Author : Richard M. Elliott
Publisher : Springer Science & Business Media
ISBN 13 : 1489913645
Total Pages : 351 pages
Book Rating : 4.4/5 (899 download)
Download or read book The Bunyaviridae written by Richard M. Elliott and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this comprehensive reference, leading researchers examine the biology, molecular biology, and diseases of the Bunyaviridae, and provide up-to-date information on the genetic characterization and variations of this virus group. Chapters deal with the molecular biology of five genera: Bunyavirus, Hantavirus, Nairovirus, Phlebovirus, and Tospovirus. Chapters examine Bunyaviridae assembly and intracelluar protein transport as well as Bunyaviridae genetics. Contributors discuss the Bunyaviridae diseases, including the hantavirus pulmonary syndrome.
Author : Karl Maramorosch
Publisher : Elsevier
ISBN 13 : 0323160212
Total Pages : 207 pages
Book Rating : 4.3/5 (231 download)
Download or read book Biological Transmission of Disease Agents written by Karl Maramorosch and published by Elsevier. This book was released on 2012-12-02 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biological Transmission of Disease Agents covers the proceedings of a 1960 symposium on Biological Transmission of Disease Agents, held in conjunction with the Annual Meeting of the Entomological Society of America in Atlantic City, New Jersey. This book discusses methods, approaches, and problems that contribute to the progress in basic and applied research in biological transmission. This compilation is organized into two major parts encompassing 13 chapters that cover agents of plant, animal, and human diseases. The first part of the book deals with the status and significant advances of plant viruses, and the mechanical and non-mechanical transmissions and nematode vectors of these viruses. The second part starts with a discussion on viral agents known to be mosquito-borne, their importance in animal and human disease causation, as well as the several types of biological cycles involved in their transmission. The following chapters describe groups of diseases caused by transmission of sandflies, tabanids, Tsetse-borne insects, mites, ticks, and helminths. The concluding chapter presents ways of suppressing the vectors that cause diseases, such as malaria, typhus, filariasis, dysentery, trypanosomiasis, and dengue. The book appeals to students of entomology, plant pathology, human and veterinary medicine, virology, zoology, microbiology, and other branches of biology.
Author : Mauricio Montero Astúa
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (87 download)
Download or read book Unveiling and Blocking the Interaction Between Tomato Spotted Wilt Virus and Its Insect Vector, Frankliniella Occidentalis written by Mauricio Montero Astúa and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Tomato spotted wilt virus (TSWV) is an economically important plant virus dependent on insects (thrips) for transmission to plant hosts. Like many animal-infecting viruses, TSWV replicates in the cells of its insect vector. The virus is an emergent disease threatening food and fiber crops worldwide. The aim of this work was to develop novel control strategies against TSWV through a better understanding of the virus-vector interaction. Previously, the TSWV GN protein was shown to be the viral attachment protein, a molecule mediating attachment of virus particles to the midgut epithelial cells of vector thrips. The specific goals of my research were to further examine the utility of disrupting the virus-vector interaction for effective virus control by exploiting GN properties, and to track the route of TSWV in thrips using confocal microscopy. To achieve these goals, I expressed soluble and insoluble forms of GN fused to green fluorescent protein (GFP) transiently and transgenically and examined their cellular localization in planta. GN::GFP recombinant protein localized to Golgi stacks throughout the cells as indicated by a punctate pattern or co-localization to a Golgi marker. In contrast, the soluble form of GN, GN-S::GFP, localized to the ER and apparently also to the cytoplasm. Virus acquisition and transmission assays with GN-S::GFP transgenic tomato plants demonstrated that transmission of TSWV by F. occidentalis was reduced by 35 to 100%. These results indicated that transgenic expression of GN-S in tomato plants may have the potential to prevent secondary spread of the virus. Novel features of the morphology of principal (PSGs) and tubular salivary glands (TSGs) of the insect vector F. occidentalis and of their infection with TSWV were described. The virus colonized different cell types and regions within the PSGs with variable intensity and distribution; and accumulated at the lumen of individual cells. The TSGs of F. occidentalis are proposed as a route for TSWV infection into the PSGs. The transgenic plants and the new knowledge of the virus vector interaction are promising tools to control TSWV and a model approach for the control of other vector-borne viruses.
Author : Moulay Mustapha Ennaji
Publisher : Academic Press
ISBN 13 : 0128149671
Total Pages : 388 pages
Book Rating : 4.1/5 (281 download)
Download or read book Emerging and Reemerging Viral Pathogens written by Moulay Mustapha Ennaji and published by Academic Press. This book was released on 2019-09-14 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: Emerging and Reemerging Viral Pathogens: Applied Virology Approaches Related to Human, Animal and Environmental Pathogens, Volume Two presents new research information on viruses and their impact on the scientific community. It provides a reference book on certain viruses in humans, animals and vegetal, along with a comprehensive discussion on interspecies interactions. The book then looks at the drug, vaccine and bioinformatical strategies that can be used against these viruses, giving the reader a clear understanding of transmission. The book's end goal is to create awareness that the appearance of newly transmissible pathogens is a global risk that requires shared/adoptable policies for prevention and control. Covers most emerging viral disease in humans, animals and plants Provides the most advanced tools and techniques in molecular virology and the modeling of viruses Creates awareness that the appearance of new transmissible pathogens is a global risk Highlights the need to adopt shared policies for the prevention and control of infectious diseases
Author : Richard Ellis Ford Matthews
Publisher : Gulf Professional Publishing
ISBN 13 : 9780123611604
Total Pages : 1084 pages
Book Rating : 4.6/5 (116 download)
Download or read book Matthews' Plant Virology written by Richard Ellis Ford Matthews and published by Gulf Professional Publishing. This book was released on 2002 with total page 1084 pages. Available in PDF, EPUB and Kindle. Book excerpt: It has been ten years since the publication of the third edition of this seminal text on plant virology, during which there has been an explosion of conceptual and factual advances. The fourth edition updates and revises many details of the previous editon, while retaining the important older results that constitute the field's conceptual foundation. Key features of the fourth edition include: * Thumbnail sketches of each genera and family groups * Genome maps of all genera for which they are known * Genetic engineered resistance strategies for virus disease control * Latest understanding of virus interactions with plants, including gene silencing * Interactions between viruses and insect, fungal, and nematode vectors * New plate section containing over 50 full-color illustrations.
Author : Irwin Goldman
Publisher : John Wiley & Sons
ISBN 13 : 1119828228
Total Pages : 477 pages
Book Rating : 4.1/5 (198 download)
Download or read book Plant Breeding Reviews, Volume 45 written by Irwin Goldman and published by John Wiley & Sons. This book was released on 2021-10-21 with total page 477 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plant Breeding Reviews presents state-of-the-art reviews on plant genetics and the breeding of all types of crops by both traditional means and molecular methods. Many of the crops widely grown today stem from a very narrow genetic base; understanding and preserving crop genetic resources is vital to the security of food systems worldwide. The emphasis of the series is on methodology, a fundamental understanding of crop genetics, and applications to major crops.
Author : Candice Ann Stafford-Banks
Publisher :
ISBN 13 : 9781303540738
Total Pages : pages
Book Rating : 4.5/5 (47 download)
Download or read book Impact of Tomato Spotted Wilt Virus (family Bunyaviridae, Genus Tospovirus) on Western Flower Thrips (Frankliniella Occidentalis) Feeding Behaviors and Analysis of the Adult Salivary Gland Transcriptome written by Candice Ann Stafford-Banks and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The interactions between parasites and their vectors can cause profound changes in vector behavior, including changes that can enhance parasite transmission and alter trophic interactions. Parasite driven modification of vector feeding behavior is of broad adaptive significance, as vector borne parasite fitness relies on passage to a new host through vector feeding. We report for the first time, that vector infection by a plant virus alters feeding behavior. Here we show that infection with Tomato spotted wilt virus (TSWV), (family Bunyaviridae, genus Tospovirus), alters both the plant feeding behaviors and predatory behaviors of its omnivorous thrips vector, Frankliniella occidentalis (Pergande). Interestingly, the behavioral alterations reported herein are sexually dimorphic. TSWV infection altered the plant feeding behavior of male but not female thrips, and altered the predatory behavior of female thrips to a greater extent than male thrips. TSWV infection and cell-to-cell movement requires the inoculation of virus particles into a living, functional plant cell, therefore feeding behaviors that introduce virus particles into this type of environment are most likely to result in successful virus transmission. Male thrips infected with TSWV fed on plant material more than uninfected males, with the frequency of all feeding behaviors increasing by up to 3 fold. Importantly, infected males made almost 3 times more non-ingestion probes (probes in which they salivate, but leave cells largely undamaged), compared to uninfected males, thus increasing the probability of virus inoculation. F. occidentalis infected with TSWV also exhibited increased predatory behaviors and the presence and consumption of mite eggs as an alternative food source did not significantly alter vector plant feeding behaviors. Alteration to thrips predatory behavior is unlikely to be directly linked with increased virus transmission because increased predation did not affect plant feeding behaviors. Taken together these alterations to thrips feeding behaviors appear to be a compensatory response to alleviate detrimental effects of virus infection, as opposed to a direct manipulation of vector feeding behaviors to increase virus transmission. Furthermore, these finding shows an alternative pathway by which viruses can influence the structure of trophic interactions in food webs. Saliva is known to play a crucial role in insect feeding behavior and virus transmission. Currently, very little is known about the salivary glands and saliva of thrips. As a first step towards characterizing thrips salivary gland functions, we sequenced the transcriptome of the primary salivary glands of F. occidentalis using short read sequencing (Illumina) technology. We found 32,566 high quality contig sequences with an average size of 605 bp. A high percentage (57.29%) of contigs had no protein or nucleotide hits, but 13,275 contigs had significant BLAST hits (E-value (less than/equal to) 1.0E−6). We identified several genes that are likely to play a role in thrips feeding including: aldehyde dehydrogenases, metalloproteases, and glucose oxidase, which are likely to be involved in counteracting plant host defense responses; [beta] glucosidases and pectin lyases which are likely play a role in the extra-oral digestion of plant structural tissues; and [alpha] amylase, and [alpha] glucosidase while likely play a role in the extra-oral digestion of sugars. This is the first comprehensive study of a sialotranscriptome for any Thysanopteran species and provides a necessary tool to further our understanding of how thrips interact with their viruses and plant hosts.
Download or read book Molecular Evolution and Population Genetics of Tomato Spotted Wilt Virus (TSWV). written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The overall goal of this dissertation research was to elucidate the molecular evolution and population genetics of Tomato Spotted Wilt virus (TSWV), at the species level and within individual isolates, and to develop a standardized diagnostic system that can be used to assign attribution to initial TSWV infections. Initially, using consensus sequence data from genes encoding five viral proteins we applied a multilocus molecular population genetic framework to characterize the genetic status and recent evolutionary history of the TSWV species. Our analysis provided the first demonstration of population structuring and species-wide population expansions for TSWV, attributed possibly to founder effects. Also, we identified positive selection favoring divergence between Tospovirus species and purifying selection acting at the species level to preserve protein function. In addition, we were able to discover specific amino acid sites subject to positive selection within Bunyaviridae and to estimate the level of genetic heterogeneity of the TSWV species. Subsequently, in order to characterize the population history and genetic structure of individual wild-type TSWV isolates, thirteen geographically and host-diverse isolates were amplified, cloned and 516 clones were sequenced. Estimation of levels of genetic diversity and haplotype analysis revealed that natural TSWV isolates are highly heterogeneous viral populations that consist of one or more haplotypes with high frequency and an array of closely related rare haplotypes, some of which are defective. These viral populations exhibit a high transitional bias, attributed to the function of RNA-dependent RNA polymerase or an editing enzyme such as dsRAD. Also high levels of among-population differentiation were observed induced by geographic and/or host related factors. Demographic analysis based on tests of neutrality, gene genealogies and the coalescent revealed an excess of rare polymorphism and a shallow population genet.
Author : Judith K. Brown
Publisher :
ISBN 13 : 9780890545164
Total Pages : 496 pages
Book Rating : 4.5/5 (451 download)
Download or read book Vector-Mediated Transmission of Plant Pathogens written by Judith K. Brown and published by . This book was released on 2016 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : John Jayson Cho
Publisher :
ISBN 13 :
Total Pages : 10 pages
Book Rating : 4.:/5 (199 download)
Download or read book Host list of plants susceptible to tomato spotted wilt virus (TSWV) written by John Jayson Cho and published by . This book was released on 1987 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
