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Author: Kurt Mendgen
Publisher: Springer Science & Business Media
ISBN: 3642758185
Category : Science
Languages : en
Pages : 342
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Book Description
Plants, fungi, and viruses were among the first biological objects studied with an electron microscope. One of the two first instruments built by Siemens was used by Helmut Ruska, a brother of Ernst Ruska, the pioneer in constructing electron microscopes. H. Ruska published numerous papers on different biological objects in 1939. In one of these, the pictures by G. A. Kausche, E. Pfankuch, and H. Ruska of tobacco mosaic virus opened a new age in microscopy. The main problem was then as it still is today, to obtain an appropriate preparation of the specimen for observation in the electron microscope. Beam damage and specimen thickness were the first obstacles to be met. L. Marton in Brussels not only built his own instrument, but also made considerable progress in specimen preparation by introducing the impregnation of samples with heavy metals to obtain useful contrast. His pictures of the bird nest orchid root impregnated with osmium were revolutionary when published in 1934. It is not the place here to recall the different techniques which were developed in the subsequent years to attain the modern knowledge on the fine structure of plant cells and of different plant pathogens. The tremendous progress obtained with tobacco mosaic virus is reflected in the chapter by M. Wurtz on the fine structure of viruses in this Volume. New cytochemical and immunological techniques considerably surpass the morphological information obtained from the pathogens, especially at the host-parasite interface.
Author: Kurt Mendgen
Publisher: Springer Science & Business Media
ISBN: 3642758185
Category : Science
Languages : en
Pages : 342
Get Book Here
Book Description
Plants, fungi, and viruses were among the first biological objects studied with an electron microscope. One of the two first instruments built by Siemens was used by Helmut Ruska, a brother of Ernst Ruska, the pioneer in constructing electron microscopes. H. Ruska published numerous papers on different biological objects in 1939. In one of these, the pictures by G. A. Kausche, E. Pfankuch, and H. Ruska of tobacco mosaic virus opened a new age in microscopy. The main problem was then as it still is today, to obtain an appropriate preparation of the specimen for observation in the electron microscope. Beam damage and specimen thickness were the first obstacles to be met. L. Marton in Brussels not only built his own instrument, but also made considerable progress in specimen preparation by introducing the impregnation of samples with heavy metals to obtain useful contrast. His pictures of the bird nest orchid root impregnated with osmium were revolutionary when published in 1934. It is not the place here to recall the different techniques which were developed in the subsequent years to attain the modern knowledge on the fine structure of plant cells and of different plant pathogens. The tremendous progress obtained with tobacco mosaic virus is reflected in the chapter by M. Wurtz on the fine structure of viruses in this Volume. New cytochemical and immunological techniques considerably surpass the morphological information obtained from the pathogens, especially at the host-parasite interface.
Author: Melvin Dennis Bolton
Publisher: Springer Science+Business Media
ISBN: 9781617795015
Category : Science
Languages : en
Pages : 648
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Book Description
Including reproducible laboratory protocols, this guide to fungal pathogens in plants has been written by expert researchers in the field and includes methods now used to study them, including techniques for model systems such as Arabidopsis thaliana.
Author: Kurt Mendgen
Publisher: Springer
ISBN: 9783540527770
Category : Science
Languages : en
Pages : 336
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Book Description
Plants, fungi, and viruses were among the first biological objects studied with an electron microscope. One of the two first instruments built by Siemens was used by Helmut Ruska, a brother of Ernst Ruska, the pioneer in constructing electron microscopes. H. Ruska published numerous papers on different biological objects in 1939. In one of these, the pictures by G. A. Kausche, E. Pfankuch, and H. Ruska of tobacco mosaic virus opened a new age in microscopy. The main problem was then as it still is today, to obtain an appropriate preparation of the specimen for observation in the electron microscope. Beam damage and specimen thickness were the first obstacles to be met. L. Marton in Brussels not only built his own instrument, but also made considerable progress in specimen preparation by introducing the impregnation of samples with heavy metals to obtain useful contrast. His pictures of the bird nest orchid root impregnated with osmium were revolutionary when published in 1934. It is not the place here to recall the different techniques which were developed in the subsequent years to attain the modern knowledge on the fine structure of plant cells and of different plant pathogens. The tremendous progress obtained with tobacco mosaic virus is reflected in the chapter by M. Wurtz on the fine structure of viruses in this Volume. New cytochemical and immunological techniques considerably surpass the morphological information obtained from the pathogens, especially at the host-parasite interface.
Author: Gary Phillip Munkvold
Publisher:
ISBN: 9780890544921
Category : Corn
Languages : en
Pages : 165
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Book Description
Author: Holger B. Deising
Publisher: Springer Science & Business Media
ISBN: 3540874070
Category : Science
Languages : en
Pages : 408
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Book Description
Since the publication of the first edition of "The Mycota Vol. V – Plant Relationships" in 1997, tremendous advances in fungal molecular biology and biochemistry have taken place; and both light and electron microscopical techniques have improved considerably. These new insights led to a better understanding of the relationships between fungi and plants; and a completely revised new edition of Plant Relationships could be produced, providing an up-to-date overview on mutualistic and pathogenic interactions. In 18 chapters internationally acknowledged authors present reviews on fungal lifestyles, mechanisms of their interactions with their host plants, signal perception and transduction, and plant defense responses directed against attack by fungal pathogens. Highlighting the recent developments in fungus-plant interactions, this volume is indispensable for researchers, lecturers and students in microbiology, mycology and plant sciences, including plant pathology.
Author: P. Narayanasamy
Publisher: CRC Press
ISBN: 1482270951
Category : Science
Languages : en
Pages : 541
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Book Description
This work provides information on the detection, identification, and differentiation of all microbial plant pathogens - presenting modern protocols for rapid diagnosis of diseases based on biological, physical, chemical and molecular properties. It contains methods for the selection of disease-free seeds and vegetatively propagated planting materia
Author: Kerry F. Harris
Publisher: Academic Press
ISBN: 1483273326
Category : Science
Languages : en
Pages : 482
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Book Description
Vectors of Plant Pathogens is a collection of papers that discusses the interrelationship of plant pathogens with their vectors. This collection deals with the numerous vector groups associated with plant pathogens. One paper describes the biology, feeding behavior and distribution of aphids, leafhoppers, plant hoppers, mealy bugs, whiteflies, psyllids, membracids. Another paper addresses the virus transmission characteristics of the mealy bugs during preliminary fasting or feeding, acquisition access time, post-acquisition fasting or feeding, and the inoculation access time. Other papers also discuss the involvement of insects in transmitting bacterial and fungal pathogens; the authors list unresolved issues such as the role of insects in overwintering of bacterial pathogens or the association of the fungus with a particular vector. One author describes some suspected fungi transmission such as the pea stem necrosis virus, red clover necrotic mosaic virus, and the tomato bushy stunt virus. Another paper examines the fate of plant viruses in mite vectors and convectors particularly the viruses found in wheat, barley, or brome grass. Agriculturists, botanists, and researchers in the field of botany, conservation, and plant genealogy will find this book useful.
Author: Perumal Narayanasamy
Publisher: John Wiley & Sons
ISBN: 1119195772
Category : Technology & Engineering
Languages : en
Pages : 1188
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Book Description
Healthy seeds and propagules are the basic requirement for producing good grains, fruits and vegetables needed for human survival and perpetuation. Dispersal of microbial plant pathogens via seeds and propagules has assumed more importance than other modes of dispersal, as infected seeds and propagules have the potential to become the primary sources of carrying pathogen inoculum for subsequent crops. Several diseases transmitted through seeds and propagules have been shown to have the potential to damage economies as a result of huge quantitative and qualitative losses in numerous crops. Hence, it is essential to rapidly detect, identify and differentiate the microbial plant pathogens present in seeds and propagules precisely and reliably, using sensitive techniques. Microbial Plant Pathogens: Detection and Management in Seeds and Propagules provides a comprehensive resource on seed-borne and propagule-borne pathogens. Information on the biology of microbial pathogens, including genetic diversity, infection process and survival mechanisms of pathogens and epidemiology of diseases caused by them, are discussed critically and in detail to highlight weak links in the life cycles of the pathogens. Development of effective disease management systems, based on the principles of exclusion and eradication of pathogens and immunization of crop plants to enhance the levels of resistance of cultivars to diseases, has been effective to keep the pathogens at bay. The need for production of disease-free seeds/propagules has been emphasized to prevent the carryover of the inoculum to the next crop or introduction of the pathogens to other locations. Effectiveness of adopting simple cultural practices and development of cultivars resistant to diseases through traditional breeding methods or biotechnological approach have resulted in reducing the pathogen inoculum and disease incidence. Although application of different chemicals may reduce the disease incidence effectively, biological management of crop diseases, employing potential biological control agents have to be preferred to preserve the agroecosystems. Greater efforts have to be made to integrate compatible strategies to enhance the effectiveness of diseases management systems. Protocols appended at the end of relevant chapters form a unique feature of this book to enable the researchers to fine-tune their projects. This 2 volume set provides comprehensive and updated information about the economically-important groups of microbial plant pathogens carried by seed and propagules. Graduate students, researchers and teachers of plant pathology, plant protection, microbiology, plant breeding and genetics, agriculture and horticulture, as well as certification and quarantine personnel will find the information presented in this book useful.
Author: John A. Lucas
Publisher: John Wiley & Sons
ISBN: 1444313444
Category : Science
Languages : en
Pages : 290
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Book Description
This established textbook continues to provide a comprehensiveintroduction to plant diseases and the bacterial, fungal and viralagents that cause them. Aimed at undergraduate students in both thebiological and agricultural sciences, the book covers all aspectsof plant pathology, from a description of the diseased plant andthe varius pathogens, to the way in which disease epidemics arecaused and are controlled. This new edition has been extensivelyrevised to reflect recent advances in our understanding of theintractions between host and pathogens at both the molecular andcellular levels, highlighting the impact of molecular genetictechniques on the analysis of host specificity, pathogenecity andresistance to infection. New chapters on chemical, cultural andintegrated approaches to disease control discuss the topical issuesof disease management. A thoroughly revised edition of a popular, classic textauthored by a leading expert in the field. Contains new chapters on disease assessment and diseasemanagement. Competetively priced.
Author: C.H. Dickinson
Publisher: Elsevier
ISBN: 0323143539
Category : Science
Languages : en
Pages : 680
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Book Description
Microbiology of Aerial Plant Surfaces is composed of papers presented at a meeting held at the University of Leeds in September, 1975. The content covers progress in work on the aerial surfaces of plants during the years 1970-1975. Organized into 31 chapters, the book begins with the aspects of the structure and development of the aerial surfaces of higher plants. It then elucidates some effects of fungicides and other agrochemicals on the microbiology of the aerial surfaces of plants; effects of air pollution on the structure and function of plant-surface microbial ecosystems; and the aerial microclimate around plant surfaces. Some other topics discussed include the taxonomy of bacteria on the aerial parts of plants; fungi on the aerial surfaces of higher plants; and distribution of yeasts and yeast-like organisms on aerial surfaces of developing apples and grapes. Furthermore, the book explains the saprophytes on plant surfaces in maritime areas and antagonism between fungal saprophytes and pathogens on aerial plant surfaces.
