Preliminary results of the analysis of the role of genetic factors in ash dieback caused by Hymenoscyphus fraxineus (anamorph Chalara fraxinea, T. Kowalski)

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F15%3A00091433" target="_blank" >RIV/62156489:43410/15:00091433 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Preliminary results of the analysis of the role of genetic factors in ash dieback caused by Hymenoscyphus fraxineus (anamorph Chalara fraxinea, T. Kowalski)

Original language description

Since the mid of the 1990s, common ash (Fraxinus excelsior) has been severely stricken by the novel dieback disease. It was attributed to a synergic effect of various fungal pathogens at the beginning (Lygis et al. 2005, Bakys et al. 2008) but proved to be caused by the invasive fungus Hymenoscyphus fraxineus originating in the Far East. The Ash Dieback was first reported on common ash in northeastern Poland in the mid-1990s (Kowalski 2006) and since then it has spread rapidly over the most of its natural range. In the Czech Republic, it has been present since 2002. The disease begins as infection of leaves which spreads into peripheral branches. It evolves into the crown dieback and results in the decline of infected trees in the final stage. It has been a serious threat since it has caused a widespread dieback in Northeast- and Central-European ash populations. In the intensity of dieback, considerable intraspecific (genetic) variation was observed in common ash (McKinney et al. 2011, Kjaer 2012, Stener 2013). Strong genetic control of the susceptibility and resistance of ash to the infection by H. fraxineus was proved by Lobo et al. (2015). Infection-tolerant trees represent only a small fraction (1-5%) of ash populations in Sweden, Denmark and Lithuania, however. The main aim of this project was the analysis of the role of genetic factors in the susceptibility of common ash to the ash dieback in the Czech Republic.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

GK - Forestry

OECD FORD branch

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Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2015

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů