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Chestnut blight fungus in Croatia : diversity of vegetative compatibility types, mating types and genetic variability of associated hypovirus CHV-1 (CROSBI ID 137632)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Krstin, Ljiljana ; Novak-Agbaba, Sanja ; Rigling, Daniel ; Krajačić, Mladen ; Ćurković Perica, Mirna Chestnut blight fungus in Croatia : diversity of vegetative compatibility types, mating types and genetic variability of associated hypovirus CHV-1 // Plant pathology, 57 (2008), 6; 1086-1096. doi: 10.1111/j.1365-3059.2008.01905.x

Podaci o odgovornosti

Krstin, Ljiljana ; Novak-Agbaba, Sanja ; Rigling, Daniel ; Krajačić, Mladen ; Ćurković Perica, Mirna

engleski

Chestnut blight fungus in Croatia : diversity of vegetative compatibility types, mating types and genetic variability of associated hypovirus CHV-1

Cryphonectria parasitica, the causal agent of chestnut blight, has been responsible for the decline of chestnut in Croatia for already five decades. In order to improve understanding of this pathogen diversity, 338 isolates of C. parasitica were sampled from 10 chestnut populations throughout chestnut-growing coastal and continental areas of Croatia. Eighteen vegetative compatibility types (vc) were identified. The vc type EU-1 was the most widespread comprising 42.9% of the isolates followed by EU-2 (21%), and EU-12 (14.2%). In respect to the occurrence of the main vc types, the C. parasitica populations in Croatia combine features of both north-western and the south-eastern European populations. Perithecia and both mating types of C. parasitica in approximately 1:1 ratio were found in all populations suggesting that sexual reproduction of the fungus is common in Croatia. Natural hypovirulence was also evident in all populations with incidence of hypovirus-infected isolates ranging from 12.7% in Istria-Buje to 66.6% in the continental part of the country. A total of 36 hypovirus-infected isolates sampled throughout Croatia were analyzed in ORF-A and ORF-B by RT-PCR/RFLP analysis. All viral isolates belonged to the Italian subtype of Cryphonectria hypovirus 1 (CHV-1) and were closely related to the isolates found in other European countries. The RFLP patterns found were also identical or similar to the patterns of three isolates collected in Croatia 22 years ago, suggesting a slow evolution of the hypovirus.

Castanea sativa; Cryphonectria parasitica; epidemiology; hypovirulence; dsRNA/RT-PCR/RFLP

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Podaci o izdanju

57 (6)

2008.

1086-1096

objavljeno

0032-0862

10.1111/j.1365-3059.2008.01905.x

Povezanost rada

Poljoprivreda (agronomija), Šumarstvo, Biologija

Poveznice
Indeksiranost