Parasitism of Rust, Early and Late Leafspot Pathogens of Peanut by Verticillium Lecanii
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چکیده
منابع مشابه
Detection of Verticillium lecanii in Pustules of Bean Rust (Uromyces phaseoli) by Immunofluorescence
Verticillium lecanii has been found growing in pustu'les of the uredial stage of a number of rust fungi (GAMS 1971, SCHROEDER and HAssEBRAuK 1957, CASPER and MENDGEN 1979, SPENCER 1'980), and in some insects (HALL 1980). SCHROEDER and HASSEBRi\UK (1957) observed that this fungus is able to penetrate the urediospores of Puccinia striiformis. It remains to be shown, however, whether Verticillium ...
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We have characterized biologically and physiologically eight Verticillium lecanii strains from several origins including insect pests. Of all the temperatures tested, 25 degrees C was the best for growth and at 40 degrees C none of the strains could grow. At 4 and 7 degrees C, growth was reduced in comparison to warmer temperatures. The strains had better development at pH close to 7 (F = 27.64...
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It is generally recognized that the susceptibility and prevalence of manv plant diseases are associated with plant nutrition. The peanut plant is susceptible to leafspot infection which becomes economicallv important during the last half of its growth period when the crop is planted in the spring. The severity and rapid spread of infection in the field may not be due to the mere presence of the...
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Detecting the presence and amount of a fungus in leaf tissue, especially when it is suspected that other fungi are presen~, is quite difficult. Culture methods can be unreliable because a few spores of a fast growing fungus may overgrow other fungi within a, few days (e.g. McKENZIE and HUDSON 1976). Methods which measure the chitin content of fungal walls cannot differentiate between fungi; in ...
متن کاملProduction of extracellular enzymes in the entomopathogenic fungus Verticillium lecanii
This study investigates the mechanisms as well as strategies for purification and characterization of potential enzymes involved in pathogenesis of entomopathogenic fungi. The test strain of Verticillium lecanii that was screened, during the present investigation, proved to be an efficient producer of protein and polysaccharide degrading enzymes (amylase, protease, and lipase), hence indicating...
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ژورنال
عنوان ژورنال: Peanut Science
سال: 1990
ISSN: 0095-3679
DOI: 10.3146/i0095-3679-17-1-1