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Population structure of Cryphonectria hypovirus 1 across the invasion range of the chestnut blight fungus in central and south-eastern Europe (CROSBI ID 699455)

Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija

Ćurković Perica, Mirna ; Ježić, Marin ; Schwarz, Janine Melanie ; Prospero, Simone ; Sotirovski, Kiril ; Nuskern, Lucija ; Risteski, Mihajlo ; Krstin, Ljiljana ; Katanić, Zorana ; Poljak, Igor et al. Population structure of Cryphonectria hypovirus 1 across the invasion range of the chestnut blight fungus in central and south-eastern Europe // FEMS Online Conference on Microbiology - Electronic Abstract Book. 2020. str. 435-435

Podaci o odgovornosti

Ćurković Perica, Mirna ; Ježić, Marin ; Schwarz, Janine Melanie ; Prospero, Simone ; Sotirovski, Kiril ; Nuskern, Lucija ; Risteski, Mihajlo ; Krstin, Ljiljana ; Katanić, Zorana ; Poljak, Igor ; Idžojtić, Marilena ; Rigling, Daniel

engleski

Population structure of Cryphonectria hypovirus 1 across the invasion range of the chestnut blight fungus in central and south-eastern Europe

Cryphonectria parasitica is an introduced phytopathogenic fungus, that is causing chestnut blight, a devastating disease of chestnut trees. The disease can be controlled by a naturally occurring mycovirus Cryphonectria hypovirus 1 (CHV1). CHV1, which is a +ssRNA virus in the family Hypoviridae, reduces the virulence and fertility of C. parasitica, a phenomenon called hypovirulence which positively affects recovery of infected trees. Therefore, the prevalence of hypovirulent, CHV1-infected fungal strains in a population is correlated to efficacy of biological control of the disease. The aim of this study was to reveal prevalence and diversity of CHV1 in six C. parasitica populations, two of each in Switzerland, Croatia and North Macedonia. The prevalence of hypovirulent strains within populations ranged from 26% (Smolare, North Macedonia) to 75% (Contone, Switzerland). Ninety-five partial ORF- A CHV1 consensus sequences were obtained, ranging from 6 to 30 per population. Cluster analysis showed weak distinction between the obtained sequences placing them all within the Italian subtype of CHV1. The results suggest that all isolates analyzed in this study share a relatively recent common ancestor, probably spreading through Swiss and Croatan populations during the 2nd half of the 20th century and expanding to south-eastern Europe a couple of decades later. DAPC analysis distinguished North Macedonian from Swiss and Croatan CHV1 sequences, which was also clearly outlined by haplotype network. These results, as well as very close relationship amongst North Macedonian CHV1 strains, seem to support the hypothesis about the western European origin of south-east European CHV1 populations, with an observable bottleneck and founder effect.

biological control, population genetics, RNA virus

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Podaci o prilogu

435-435.

2020.

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objavljeno

Podaci o matičnoj publikaciji

FEMS Online Conference on Microbiology - Electronic Abstract Book

Podaci o skupu

Federation of European Microbiological Societies Online Conference on Microbiology (FEMS 2020)

poster

28.10.2020-31.10.2020

online

Povezanost rada

Biologija, Šumarstvo