Naslov
Analysis of Croatian Ophiostoma novo-ulmi populations – insight into changes occurring over time

Autori
Zorana, Katanić ; Ljiljana, Krstin ; Helena, Vilc ; Marilena, Idžojtić ; Mirna, Ćurković-Perica

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

Izvornik
Book of abstracts / International scientific conference: "Better Forestry, for Better Forests, for a Better Planet" / Trendafilov, Bozhin - Skopje : Ss. Cyril and Methodius University in Skopje - Hans Em Faculty of Forest Sciences, Landscape Architecture and Environmental Engineering, 2022, 63-63

ISBN
978-9989-132-24-7

Skup
International scientific conference "Better Forestry, for better forests, for a better planet"

Mjesto i datum
Skopje, Sjeverna Makedonija, 15.06.2022. - 16.06.2022

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Dutch elm disease, elms, temporal variability

Sažetak
Ophiostoma novo-ulmi is a phytopathogenic ascomycete fungus that causes Dutch elm disease (DED) – a highly destructive disease responsible for killing numerous North American and European elms (Ulmus ssp.). DED spreading began in the early 20th century and it was originally caused by Ophiostoma ulmi, while O. novo-ulmi emerged in the mid-20th century, initiated an even more destructive DED pandemic, and eventually became the main DED pathogen. Two O. novo-ulmi subspecies (O. novo-ulmi ssp. novo-ulmi and ssp. americana) are widespread throughout Europe and their hybrids are frequently found in areas of overlapping distribution. Following the DED survey across Croatia conducted in 2012, elms were resampled in selected Croatian forests (sites Nova Kapela and Jastrebarsko) in 2021. An increase in disease incidence at site Nova Kapela was observed in 2021 compared to 2012, while at site Jastrebarsko a decrease in disease incidence was detected. Molecular characterization of O. novo-ulmi isolates based on analysis of the col1 and cu gene sequences indicated that in 2021, similar to 2012, the O. novo-ulmi ssp. novo-ulmi is more frequent compared to O. novo-ulmi ssp. americana which was only detected at site Nova Kapela in 2021. O. novo-ulmi ssp. novo-ulmi x ssp. americana hybrids were found at both sites in both years of investigation. Obtained results point out that variations in disease incidence do occur over time, but the dominancy of O. novo-ulmi ssp. novo- ulmi and hybrids over O. novo-ulmi ssp. americana is retained in investigated sites.

Izvorni jezik
Engleski

Znanstvena područja
Biologija, Šumarstvo

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