Naslov
Natural biological control of Cryphonectria parasitica in Croatia

Autori
Ćurković Perica, M. ; Krstin, Ljiljana ; Novak-Agbaba, S.

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
4th Croatian Congress of Microbiology with International Participation Programme and Abstracts / Abram, M. ; Ambriović-Ristov, A. ; Bendelja, K. ; Hršak, D. ; Kos, B. ; Kozačinski, L. ; Pepeljnjak, S. ; Sviben, M. ; Vučković, D. - Zagreb : Hrvatsko mikrobiološko društvo, 2008

ISBN
978-953-96567-7-3

Skup
4th Croatian Congress of Microbiology with International Participation

Mjesto i datum
Zadar, Hrvatska, 24.09.2008. - 27.09.2008

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Nije recenziran

Ključne riječi
Cryphonectria parasitica; Castanea sativa; Cryphonectria hypovirus 1; biological control; chesnut blight

Sažetak
The phytopathogenic fungus Cryphonectria parasitica, the causal agent of chestnut blight, has been responsible for the decline of chestnut trees in all chestnut growing regions of Europe, including Croatia. The aim of this research was to improve understanding of this pathogen diversity and to investigate whether virus-induced hypovirulence is naturally present in C. parasitica populations or human-mediated biological control is necessary. We sampled 338 fungal isolates from 10 chestnut populations throughout chestnut-growing coastal and continental areas of Croatia. Eighteen vegetative compatibility (vc) types were identified, with vc types EU-1, EU-2 and EU-12 being the most widespread. Perithecia and both mating types of C. parasitica in approximately 1:1 ratio were found in all populations suggesting sexual reproduction of the fungus. Although high vc type diversity and sexual reproduction were confirmed, which usually presents an obstacle for the spreading of the hypovirus, natural hypovirulence was evident in all fungal populations. Incidence of hypovirus-infected isolates ranged from 12.7% in coastal to 66.6% in the continental part of the country. The presence of hypovirus was confirmed not only in all main C. parasitica vc types, but also in some rare vc types. 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.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

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