Naslov
The effect of temperature on the growth of the phytopathogenic fungus Ophiostoma novo-ulmi

Autori
Ljiljana, Krstin ; Zorana, Katanić ; Hana, Hipp ; Darijan, Biloš ; 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, 46-46

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 ; growth rate

Sažetak
Dutch elm disease (DED), which is caused by the aggressive ascomycete fungus Ophiostoma novo-ulmi, has led to the drying and decay of many elm trees (Ulmus spp.) across Europe, North America, and Central Asia. This phytopathogen is responsible for the second, current DED pandemic, while the less aggressive fungus Ophiostoma ulmi caused the first DED pandemic. The fungus O. novo-ulmi is divided into two subspecies: O. novo-ulmi ssp. novo-ulmi and O. novo-ulmi ssp. americana that can interbreed and form hybrids. To investigate the effect of temperature on the phytopathogenic fungus O. novo-ulmi, the growth rate of different O. novo-ulmi isolates was measured at temperatures ranging from 16 to 30 °C. Fungal isolates infecting elms in Croatian forests were determined according to the analysis of cu and col1 genes as O. novo-ulmi ssp. novo-ulmi, O. novo-ulmi ssp. americana or hybrids. As expected, the growth rate was mostly highest at a temperature of 21 °C, while greater deviations from optimal growth temperature (at a temperature of 16 °C and ≥ 28 °C) led to significant slowdowns of growth for all tested isolates. However, differences between isolates were observed in the case of smaller deviations from the optimal growth temperature (at 18 and 25 °C) when some isolates had decreased growth rate due to increase and/or decrease in temperature, while for others there were no statistically significant differences compared to 21 °C. This points to the intraspecies variability in the tolerance and or/adaptability to a range of temperatures, but the growth pattern at different temperatures could not be correlated with the molecular identification of O. novo-ulmi isolates. To provide a better understanding of the ability of this phytopathogen to adapt to temperature changes, further research should include additional analysis of the response of O. novo- ulmi isolates to longterm as well as short-term exposure to different temperatures.

Izvorni jezik
Engleski

Znanstvena područja
Biologija, Šumarstvo

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