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Diversity of C ryphonectria parasitica in western Spain and identification of hypovirus‐infected isolates
Author(s) -
Zamora P.,
Martín A. B.,
Rigling D.,
Diez J. J.
Publication year - 2012
Publication title -
forest pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.535
H-Index - 49
eISSN - 1439-0329
pISSN - 1437-4781
DOI - 10.1111/j.1439-0329.2012.00775.x
Subject(s) - biology , mating type , chestnut blight , veterinary medicine , botany , fungus , genetics , gene , medicine
Summary Isolates of the chestnut blight fungus C ryphonectria parasitica were obtained from 44 localities in four provinces in W estern S pain and characterized for vegetative compatibility (vc) types, mating types and the presence of C ryphonectria hypovirus 1 ( CHV 1). Among the 1232 isolates recovered from chestnut blight cankers, 11 vc types were identified: five known vc types included in EU 1 to EU 74 ( EU 1, EU 11, EU 12, EU 28 and EU 66) and six unknown vc types ( CL 4, CL 5 CL 6, CL 8, CL 9 and CL 10). The number of vc types found per province varied between two and seven. The vc type EU 11 was present in all provinces and accounted for 48.9% of all isolates. EU 1 was detected in three provinces and accounted for 39.1% of the isolates. The vc types EU 12, EU 66, CL 5 and CL 6 were present in one or two provinces and comprised between 2.4% and 3% of the isolates. The other vc types were represented by only one or very few isolates. The mating type MAT‐1 was largely dominant in the provinces Leon and Avila, while both mating types MAT‐1 and MAT‐2 were found in S alamanca and Z amora. Fourteen hypovirus‐infected C . parasitica isolates were found, nine were in vc type EU 1 and five in EU 11, and they were detected only in the province León. All isolates analysed contained the French hypovirus subtype CHV 1‐F1.