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- Title
Biodiversidad e hipovirulencia de Cryphonectria parasitica en Europa: implicaciones para el control biológico del cancro del castaño.
- Authors
Aguín, Olga; Sainz, María Jesús; Montenegro, Dolores; Mansilla, J. Pedro
- Abstract
Chestnut blight, caused by Cryphonectria parasitica, is a widespread disease throughout the world. In Europe, it has been detected in most cultivated areas of Castanea sativa (European chestnut) in Mediterranean and Central European countries, and is considered a quarantine pathogen. There is no cultural or chemical method to control this fungus, or any European chestnut cultivar tolerant or resistant to the disease. In recent years, research on chestnut blight control has focused on the development of biological methods. Cryphonectria parasitica has two types of strains: virulent, causing severe lesions to the tree, and hypovirulent, which cause hardly any damage just because they are carriers of a virus that attenuates virulence. Field application, on affected chestnuts, of hypovirulent strains, which can transmit the virus to the virulent ones, is by far the only prospect for reducing and/or minimize the damage that this pathogen causes. The success of this biological control method for chestnut blight requires prior knowledge of the population structure of Cryphonectria parasitica (number and distribution of vegetative compatibility and sexual types) and hypovirulent isolates compatible with the virulent strains that are dominant in an affected area.
- Subjects
EUROPE; CHESTNUT blight; CRYPHONECTRIA parasitica; CHESTNUT diseases &; pests; PATHOGENIC fungi
- Publication
Recursos Rurais, 2011, Issue 7, p35
- ISSN
1885-5547
- Publication type
Article