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Sterol Biosynthesis Inhibitors and Anti-Feeding Compounds

Sterol Biosynthesis Inhibitors and Anti-Feeding Compounds
Author: T. Kato
Publisher: Springer
Total Pages: 172
Release: 1986
Genre: Science
ISBN:

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Living organisms are separated from the outside world by their membranes, which perform important roles for maintaining their lives. Sterols are indispensable com­ ponents in eukaryotic organisms for stabilizing membranes composed of phospho­ lipid bilayers. Most prokaryotic organisms, on the other hand, do not contain sterols in their membranes, although recent studies indicated that the bacterium Methylo­ coccus capsulatus produces sterols 1) and many strains of Mycoplasma, bacteria without cell walls, require sterols as an essential growth factor 2). Some bacterial species synthesize hopanoids which are hypothesized to function like st~rols in eu­ karyotic organisms 3). Significance of ergosterol in fungi has been recognized from the fact that the yeast Saccharomyces cerevisiae requires ergosterol for growth, when cultured in a strictly anaerobic condition "'. l:.lectron microscopic studies showed that membrane structures disappeared in the yeast grown anaerobically without a supplement of ergosterol 5.6), indicating the necessity of ergosterol for membrane biogenesis. Further confirmation of the significant role of ergosterol in the membranes was derived from the studies on polyene antibiotics. In the presence of polyenes such as nystatin, filipin and amphotericin B, fungal cells lose selective permeability of the membranes, since polyenes interact with ergosterol, such that the structure of the fungal membranes is disrupted 7).


Sterol Biosynthesis Inhibitors

Sterol Biosynthesis Inhibitors
Author: Dieter Berg
Publisher: John Wiley & Sons
Total Pages: 600
Release: 1988
Genre: Science
ISBN:

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Fungicide Resistance in Plant Pathogens

Fungicide Resistance in Plant Pathogens
Author: Hideo Ishii
Publisher: Springer
Total Pages: 481
Release: 2015-08-31
Genre: Science
ISBN: 4431556427

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This volume offers a comprehensive coverage of the general principles and recent advances in fungicide resistance. It describes the development, mechanisms, monitoring, and management of resistance and covers the most important group of fungicides that have caused resistance on various crops. An historical review of fungicide resistance over the past 40 years sets the scene for up-to-date basic information on mode of action, as well as the genetics, mechanisms, and evolution of resistance. Monitoring for resistance, including the latest developments in molecular diagnostics, moves readers into the practical aspects of resistance management, which is dealt with through a series of case studies outlining fungicide-use strategies on several key crops. The chapters reflect the experience of authors internationally recognised for their significant contributions to fungicide resistance research. The majority of crop diseases are caused by fungal pathogens, and disease control relies heavily on chemically synthesized fungicides. However, modern fungicides often encounter the problem of resistance development in target pathogens. Thus pathogen resistance to fungicides is an important factor that causes loss of yield and quality of crops. It often threatens biosecurity through the decrease of fungicide efficacy in the fields. To manage fungicide resistance successfully will require the promotion of integrated disease management, involving not just chemical fungicides, but also host plant resistance, agronomic factors, and reliable biological control agents where these are available. Well referenced throughout, the book offers a comprehensive account of resistance, which will be useful as a source of material for lecturers and for both industrial and academic scientists involved in fungicide resistance research. It is also a valuable sourcebook for students.


Sterol Biosynthesis

Sterol Biosynthesis
Author:
Publisher:
Total Pages: 151
Release: 1986
Genre:
ISBN:

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Modern Crop Protection Compounds, 3 Volume Set

Modern Crop Protection Compounds, 3 Volume Set
Author: Wolfgang Kr¿mer
Publisher: John Wiley & Sons
Total Pages: 1615
Release: 2012-01-17
Genre: Science
ISBN: 352732965X

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This one-stop reference for everyone working in the agrochemical business is the leading reference in the field, with first-class authors from all major crop protection companies, including Bayer, Dow, Syngenta and BASF. In three volumes, one each on herbicides, fungicides and insecticides, it provides up-to-date information on the chemical properties, mode of action, range of application, industrial-scale synthesis and commercial products. The new edition has been updated and expanded by more than 50 new compounds and their mechanisms, for a complete picture of agrochemicals introduced since 1990. A truly comprehensive source of top quality information.