Download or read book Investigations Into the in Vitro Translation and Aphid Transmission of Pea Enation Mosaic Virus written by Clifford J. Gabriel and published by . This book was released on 1983 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aphid Age and In vector Virus Concentration as Factors Influencing Pea Enation Mosaic Virus Transmission by the Pea Aphid written by Hendarsih Suharto and published by . This book was released on 1979 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: The relationship between pea enation mosaic virus (PEMV) and aging pea aphids was studied. Although this research initially emphasized the relationship between the decline in the rate of PEMV transmission and the 'concentration of PEMV within pea aphids, aphid age was found to be the principle factor influencing transmission. Enzymelinked immunosorbent assays (ELISA) were used to assay the concentration of virus within aphid bodies. Aphid age at the time of virus acquisition significantly influenced the maximum rate of transmission attained and the rate of transmission decline by aging aphids. Following a 24-hr virus acquisition treatment, 1-day-old aphids achieved the highest transmission rate (95%) and the slowest decline in their rate of transmission of 4 age groups tested. Eight-day-old aphids had a maximum transmission rate of 50% and a more rapid decline in transmission. Thirteen-day-old aphids had a maximum rate of only 5% while 23-day-old aphids did not transmit at all. The relative feeding rate of aphids 8, 13, 18, and 23 days old was measured indirectly by assaying the virus concentration in aphids immediately following a standard 24-hr virus acquisition treatment. The 18- and 23-day-old aphids fed significantly less than 8- and 13-day-olds. The concentration of PEMV was monitored periodically in both whole and dissected aphids during 16 day test periods following a 24-hr virus acquisition treatment. In the whole insect study, l-day-olds initially acquired A405 = 0.06 or 2.3 ng of PEMV while 8-day-olds acquired A405 = 0.44 or 20 ng of PEMV per aphid. The average concentration of PEMV recorded from individuals in the 1-day-old group remained constant during the 16-day test period while in the 8-day-old group it decreased significantly. When aphids from the 8-day-old group were dissected immediately after completion of the virus acquisition treatment, the virus concentration was found to be higher in the gut than in the body region. The concentration in the gut, however, declined rapidly while in the body it remained constant during the 16-day post-virus acquisition test period. Decline in the virus transmission rates by aging aphids was not explained by the virus concentration within aphids. In fact, transmission of PEMV by individual aphids was independent of the virus concentration within individual aphids. Therefore, decline in the transmission rate is more likely dependent on the physiological realtionship between PEMV and key processes within vectors, such as, entry of virions into the salivary system. These processes may be slowed by vector aging.
Download or read book Advances in Virus Research written by Frederick A. Murphy and published by Gulf Professional Publishing. This book was released on 2001-10-12 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: The collection of articles in this volume include Animal Circoviruses; Evolutions, Epidemiology and Dispersal of Flaviviruses; Hantavirus Infections in Europe; Forest Insect Pests; and Whiteflies: Vectors and Victims of Geminivirus.
Download or read book The Plant Viruses written by B.D. Harrison and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 375 pages. Available in PDF, EPUB and Kindle. Book excerpt: This fifth volume in the series The Plant Viruses, dealing with viruses with bipartite genomes, completes the coverage of viruses with isometric parti cles and genomes consisting of single-stranded, positive-sense RNA: viruses that have tripartite and monopartite genomes of this kind were dealt with in Volumes 1 and 3, respectively. How close are the affinities among the viruses within the groupings distinguished in this way? All those with tripartite genomes are considered to be sufficiently closely related to be included in the family Bromoviridae, whereas the monopartite-genome viruses covered in Volume 3 clearly are a much more diverse collection. Affinities among the viruses with bipartite genomes are considered in Chapter 1 of this volume, along with the possible origins, advantages, and disadvantages of these ge nomes. The conclusion reached from this assessment is that the bipartite genome viruses fall into four categories, those within each category having closer affinities with viruses not included in this book than with viruses in the other categories. No evidence was found that possession of a bipartite genome gives a virus overwhelming advantages over viruses of other sorts. More probably, any advantages are largely balanced by disadvantages, and bipartite genomes may be best considered simply as an alternative design for the hereditary material of a virus.
Download or read book An Examination of the Genomic Strategy of Pea Enation Mosaic Virus written by Steven A. Demler and published by . This book was released on 1990 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Genomic Localization of the 5 linked Protein Pg of Pea Enation Mosaic Enamovirus written by Christiane Elisabeth Wobus and published by . This book was released on 1997 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1973 with total page 1130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recognition and Response in Plant Virus Interactions written by Ronald S.S. Fraser and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mechanisms of resistance to plant viruses are diverse, and probably involve different types of recognition events. Often, a cascade of changes affecting broader aspects of defence and metabolism is switched on progressively after the initial recognition event. Virulence, i.e. resistence-breaking behaviour of the virus, involves a failure or alteration of recognition or subsequent signalling. Consequences of these recognition events are the ways in which the pathogenic effects on the host are exerted: formation of visible symptoms and control of plant growth. This volume offers a comprehensive coverage of the recognition and signalling events between plants and viruses whereby the particular attraction of viruses (and viroids) is that they can now be completely defined in molecular terms: they offer excellent opportunities for studying the molecular biology of signalling, and may even provide useful guidelines on how plants and cellular pathogens interact.
Download or read book Plant Virology written by Roger Hull and published by Elsevier. This book was released on 2001-10-03 with total page 1054 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
Download or read book Cumulated Index Medicus written by and published by . This book was released on 1965 with total page 1464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book World Perspectives on Barley Yellow Dwarf written by Peter A. Burnett and published by CIMMYT. This book was released on 1990 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Plant Virology written by R. E. F. Matthews and published by Academic Press. This book was released on 2013-10-22 with total page 916 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plant Virology, Second Edition, was written to cover the substantial developments in many areas of plant virology since the first edition was published. Advances have been made in all branches of the subject, but these have been most far reaching with respect to the structure of viruses and of their components, and in the understanding of how viral genomes are organized and how viruses replicate in cells. Significant developments have also occurred in the understanding of how viruses are transmitted by invertebrates and in the application of control measures for specific diseases. The taxonomy of viruses has advanced significantly, and there are now 25 internationally approved families and groups of plant viruses. All these developments have required that most sections be entirely rewritten. This book is intended primarily for graduate students in plant pathology, plant virology, general virology, and microbiology, and for teachers and research workers in these fields. It should also prove useful to some people in related disciplines—molecular biologists, biochemists, plant physiologists, and entomologists.
Download or read book Molecular Plant Virology written by Davis and published by CRC Press. This book was released on 2018-05-04 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: In calling this series Molecular Plant Virology, I had in mind aspects of plant virology of interest to biochemists, molecular geneticists, biophysicists, genetic engineers, or, collectively,molecular biologists. At the same time, the intention was to provide up-to-date reviews, by expert contributors, on current research topics in plant virology of interest and referential use to virologists and plant biologists. The selected topics are pitched mainly at a research level, but with sufficient introduction and cross-referencing to enable graduate students to enter this fascinating field and, hopefully, not get lost.
Download or read book Plant Virology written by Roger Hull and published by Academic Press. This book was released on 2013-10-31 with total page 1119 pages. Available in PDF, EPUB and Kindle. Book excerpt: The seminal text Plant Virology is now in its fifth edition. It has been 10 years since the publication of the fourth edition, during which there has been an explosion of conceptual and factual advances. The fifth edition of Plant Virology updates and revises many details of the previous edition while retaining the important earlier results that constitute the field's conceptual foundation. Revamped art, along with fully updated references and increased focus on molecular biology, transgenic resistance, aphid transmission, and new, cutting-edge topics, bring the volume up to date and maintain its value as an essential reference for researchers and students in the field. 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 Contains over 300 full-color illustrations
Download or read book Current Bibliography of Epidemiology written by and published by . This book was released on 1972 with total page 1330 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fields Virology written by David Mahan Knipe and published by Lippincott Williams & Wilkins. This book was released on 2007 with total page 3116 pages. Available in PDF, EPUB and Kindle. Book excerpt: Accompanying CD-ROM has same title as book.
