Results 121 to 130 of about 1,212 (147)
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BIOLOGICAL CONTROL OF CHESTNUT BLIGHT WITH HYPOVIRULENCE: A Critical Analysis
Annual Review of Phytopathology, 2004▪ Abstract Most hypovirulence in the chestnut blight fungus, Cryphonectria parasitica, is associated with infection by fungal viruses in the family Hypoviridae. Hypovirulence has controlled chestnut blight well in some locations in Europe and in Michigan in the United States.
M. G. Milgroom, P. Cortesi
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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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Mitochondrial plasmid-like elements in some hypovirulent strains of Cryphonectria parasitica
Fungal Genetics and Biology, 2011In the chestnut blight fungus Cryphonectria parasitica, cytoplasmically transmissible hypovirulence phenotypes are elicited by debilitating mitochondrial DNA (mtDNA) mutations. In virus-free hypovirulent strains of C. parasitica from nature, the presence of a mitochondrial DNA element, named InC9, has been reported to cause similar disease syndromes ...
Dipnath, Baidyaroy +3 more
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Hypovirulence of Didymella bryoniae Associated with dsRNA
Journal of Phytopathology, 2004Abstract Didymella bryoniae, isolate 98–18, recovered from watermelon seedlings with symptoms of gummy stem blight, showed abnormal growth, mycelial lysis, sectoring, barrage and limited production of fruiting bodies in culture. A dsRNA (approximately 6.5 kbp) was associated with isolate 98–18 and other isolates showing abnormal mycelial growth ...
R. R. Urs, D. E. Mayhew, P. D. Roberts
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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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Transmission of hypovirulence agents among some Cryphonectria parasitica strains from Italy
European Journal of Forest Pathology, 1995SummarySix hypovirulent (H) strains of Cryphonectria parasitica collected in Italy were tested for dsRNA content, virulence, and conversion ability. Nine converts were also checked for dsRNA. In inoculation trials, H and converted (C) strains showed reduced pathogenicity. Most H and C strains were able to convert strains from various v‐c groups.
G. Maresi +3 more
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Movement of cytoplasmic hypovirulence agents in chestnut blight cankers
Canadian Journal of Botany, 1992Chestnut blight cankers, initiated with virulent methionine auxotrophic strains of Cryphonectria parasitica, were challenged by placing one or two discs of agar and mycelium of prototrophic hypovirulent strains at their base. Movement of hypovirulence agents was confirmed by recovery of an isolate that exhibited the typical morphology of the ...
L. Shain, J. B. Miller
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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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Chestnut Blight: Biological Control by Transmissible Hypovirulence in Endothia parasitica
Science, 1975Hypovirulence in Endothia parasitica is caused by a cytoplasmic determinant that is transferred by hyphal anastomosis in host tissue and in culture. Transmission of this determinant affects the virulence of the fungus to the extent that host invasion by previously virulent isolates is limited.
N K, Van Alfen +3 more
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Double-Stranded RNA and Hypovirulence of Endothia Parasitica
1986The concept of biological control as a means of reducing the impact of disease or pest losses is an appealing one. The realization that the chemicals traditionally used to control pests can accumulate and have an adverse impact on the environment has created an interest in biological control as an alternative method of reducing the impact of pests ...
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