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- Title
BIOLOGICAL CONTROL OF CHESTNUT BLIGHT: UPDATES OF CRYPHONECTRIA PARASITICA VEGETATIVE. COMPATIBILITY IN CAMPANIA.
- Authors
Bosso, L.; Di Luca, M. R.; Testa, A.; Cristinzio, G.
- Abstract
The damages caused by Cryphonectria parasitica (Murr.) Barr to European chestnut populations (Castanea sativa) have been and are still serious. Biological control, based on vegetative compatibility between virulent and hypovirulent strains of the fungus, is the most important strategy against the disease. The aim of this study was to investigate the suitability of biological control of chestnut blight, checking the vegetative compatibility within fungal populations from all the provinces of Campania region (southern Italy). For each province (Avellino, Benevento, Caserta, Naples and Salerno), 28 fungal strains (6 hypovirulent and 22 virulent) were isolated. Two vegetative compatibility experiments were carried out in Petri dishes on PDA. Initially, all virulent and hypovirulent strains of each province were crossed. Then, three hypovirulent strains from each province were crossed with all virulent strains. The highest ratios of vegetative compatibility among strains collected within the same province were 95% (Salerno), 80% (Caserta), 70% (Avellino), 60% (Naples), and 50% (Benevento). Crossing virulent and hypovirulent strains of different provinces compatibility values of 100% were obtained at least once for each province. According to these preliminary results, the biocontrol of chestnut blight by hypovirulent fungal strains seems to be feasible in all provinces of the Campania region. Further analyses are in progress for the characterization of the mycoviruses associated to virulent and hypovirulent strains of C. parasitica.
- Subjects
CAMPANIA (Italy); ITALY; CHESTNUT diseases &; pests; CHESTNUT blight; ENDOTHIA parasitica; FUNGAL viruses
- Publication
Journal of Plant Pathology, 2012, Vol 94, Issue 4, pS4.84
- ISSN
1125-4653
- Publication type
Article