Results 151 to 160 of about 1,678 (191)
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SPREAD OF INTRODUCED HYPOVIRULENCE VS. NATURAL HYPOVIRULENCE IN CHESTNUT BLIGHT
Acta Horticulturae, 2010Cryphonectria parasitica was found for the first time in Greece in 1963 in Mount Pelion (Central Greece). In a short time the disease of chestnut blight devastated 500 ha of orchard land across the mountain. In 1986, hypovirulence attributed to CHV1 hypoviruses was detected on a single tree at the southern edge of the chestnut area.
C. Perlerou, S. Diamandis
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Current Genetics, 2003
A double-stranded (ds)RNA, designated as M2, is associated with hypovirulence, conversion of the quinic acid pathway from inducible to constitutive and downregulation of the shikimic acid pathway in the Rhizoctonia solani culture Rhs 1A1. In this study, we report that in the virulent, M2-lacking isolate Rhs 1AP, which is isogenic to Rhs 1A1, quinic ...
Chunyu, Liu +2 more
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A double-stranded (ds)RNA, designated as M2, is associated with hypovirulence, conversion of the quinic acid pathway from inducible to constitutive and downregulation of the shikimic acid pathway in the Rhizoctonia solani culture Rhs 1A1. In this study, we report that in the virulent, M2-lacking isolate Rhs 1AP, which is isogenic to Rhs 1A1, quinic ...
Chunyu, Liu +2 more
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Annual Review of Phytopathology, 2000 The unique coenocytic anatomy of the mycelia of the filamentous fungi and the formation of anastomoses between hyphae from different mycelia enable the intracellular accumulation and infectious transmission of plasmids and mutant mitochondrial DNAs ...
Helmut Bertrand
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Transmissible hypovirulence inSclerotinia minor
Canadian Journal of Plant Pathology, 1996Thirty isolates of Sclerotinia minor were collected from a 4 ha commercial lettuce crop at Holland Marsh, Ontario, and examined for the presence of transmissible hypovirulence. Three slow-growing isolates with atypical colony morphology were less virulent (P = 0.05) on detached lettuce leaves than other isolates and were considered hypovirulent.
M.S. Melzer, G.J. Boland
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Hypovirulent isolates of Cryphonectria parasitica in southern Ontario
Canadian Journal of Plant Pathology, 1993(1993). Hypovirulent isolates of Cryphonectria parasitica in southern Ontario. Canadian Journal of Plant Pathology: Vol. 15, No. 4, pp. 245-252.
M.M. Dunn, G. J. Boland
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A strain of mycovirus AaVV1 mediates hypovirulence of Alternaria species
Pesticide Biochemistry and PhysiologyThe genus Alternaria comprises a wide range of ubiquitous plant pathogens that affect various host plants. Certain mycoviruses can induce changes in the biological characteristics and virulence of host fungi, offering potential for biocontrol in managing fungal plant diseases. Here, we identified a mycovirus with a high degree of homology to Alternaria
Ya Rong, Wang +5 more
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Hypovirulence of Chestnut Blight Fungus Conferred by an Infectious Viral cDNA
Science, 1992Strains of the chestnut blight fungus Cryphonectria parasitica that contain viral double-stranded RNAs often exhibit reduced virulence. Such hypovirulent strains act as biocontrol agents by virtue of their ability to convert virulent strains to hypovirulence after anastomosis.
G H, Choi, D L, Nuss
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The Genetic Mechanism of Hypovirulence in Cryphonectria (Endothia) Parasitica
1992Infections caused by plant pathogenic fungi are responsible for about 70% of the major crop diseases, and consequently they are in many cases a nightmare to farmers or greenhouse growers. Occassionally, the right combination of a susceptible host with a virulent isolate of a fungus can lead to devastating epidemics, with entire crops being wiped out ...
Pierre Pfeiffer, Neal K. Van Alfen
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The Acquisition of Hypovirulence in Host‐Pathogen Systems with Three Trophic Levels
The American Naturalist, 1998A major focus of research on the dynamics of host-pathogen interactions has been the evolution of pathogen virulence, which is defined as the loss in host fitness due to infection. It is usually assumed that changes in pathogen virulence are the result of selection to increase pathogen fitness.
D R, Taylor +3 more
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Thyreophagus corticalis as a vector of hypovirulence in Cryphonectria parasitica in chestnut stands
Experimental and Applied Acarology, 2013The natural spread of hypovirulence in Cryphonectria parasitica (Murr.) Barr. occurs in chestnut (Castanea sativa Mill) stands and orchards in Italy and other European countries, leading to spontaneous recovery of the diseased trees. Little is known about how hypovirulence spreads in chestnut stands but various corticolous mite species frequently ...
Simoni S +4 more
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