<abstract xmlns="http://www.w3.org/1999/xhtml"><p>During the last decades, several new and invasive tree pathogens have arrived in the northern Europe, damaging forest and verdant trees. New and invasive species (e.g. <italic>Lecanosticta acicola</italic>, <italic>Dothistroma septosporum, Diplodia sapinea</italic>, <italic>Hymenoscyphus fraxineus</italic>) are considered to cause economic loss and be an important threat to biodiversity. Once the alien species have entered into ecosystem, then it is very difficult to eliminate them. Therefore, it is important to discover new and invasive pathogens from forests and from imported plant material as early as possible. For that reason, the research team of Estonian forest pathologists has worked out a survey strategy with permanent plots across Estonia – for early detection of new pathogens, which essentially includes molecular monitoring of pathogens. An important task in developing of early detection methods for new and invasive pathogens is working out of quick detection methods by creating original PCR primers. Crucial is also the analyses of pathogens biology, of their spreading and finding of all their potential hosts in new for them environment in northern Europe. In cooperation studies with our foreign partners, the Estonian forest pathologists have analysed populations of <italic>D. septosporum</italic>, <italic>L. acicola</italic> and <italic>H. fraxineus</italic>. The population genetic methods give data about the pathogens diversity, vitality and betray potential pathways of them to northern Europe. This information serves for building up the control strategy and helps to find and test resistant tree species progenies. Early detection, molecular monitoring and pathways detection of new and invasive pathogens are currently the most important research tasks of the forest pathology team working in Estonian University of Life Sciences.</p></abstract>

During the last decades, several new and invasive tree pathogens have arrived in the northern Europe, damaging forest and verdant trees. New and invasive species (e.g. Lecanosticta acicola, Dothistroma septosporum, Diplodia sapinea, Hymenoscyphus fraxineus) are considered to cause economic loss and be an important threat to biodiversity. Once the alien species have entered into ecosystem, then it is very difficult to eliminate them. Therefore, it is important to discover new and invasive pathogens from forests and from imported plant material as early as possible. For that reason, the research team of Estonian forest pathologists has worked out a survey strategy with permanent plots across Estonia – for early detection of new pathogens, which essentially includes molecular monitoring of pathogens. An important task in developing of early detection methods for new and invasive pathogens is working out of quick detection methods by creating original PCR primers. Crucial is also the analyses of pathogens biology, of their spreading and finding of all their potential hosts in new for them environment in northern Europe. In cooperation studies with our foreign partners, the Estonian forest pathologists have analysed populations of D. septosporum, L. acicola and H. fraxineus. The population genetic methods give data about the pathogens diversity, vitality and betray potential pathways of them to northern Europe. This information serves for building up the control strategy and helps to find and test resistant tree species progenies. Early detection, molecular monitoring and pathways detection of new and invasive pathogens are currently the most important research tasks of the forest pathology team working in Estonian University of Life Sciences.

New problems in dendropathology – new and invasive pathogens

Forestry Studies

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"New problems in dendropathology \u2013 new and invasive pathogens"}

During the last decades, several new and invasive tree pathogens have arrived in the northern Europe, damaging forest and verdant trees. New and invasive...

New problems in dendropathology – new and invasive pathogens

Published Online: Apr 25, 2018

Page range: 50 - 71

Received: Dec 04, 2017

Accepted: Mar 13, 2018

DOI: https://doi.org/10.1515/fsmu-2017-0012

Keywords
forest pathology, invasion, pathway of pathogens, global trade, Dothistroma needle blight (), Brown spot needle blight (), Diplodia tip blight (, syn. and ), ash dieback ()

© 2017 Rein Drenkhan et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

New problems in dendropathology – new and invasive pathogens

Published Online: Apr 25, 2018

Page range: 50 - 71

Received: Dec 04, 2017

Accepted: Mar 13, 2018

DOI: https://doi.org/10.1515/fsmu-2017-0012

Keywordsforest pathology, invasion, pathway of pathogens, global trade, Dothistroma needle blight (), Brown spot needle blight (), Diplodia tip blight (, syn. and ), ash dieback ()

© 2017 Rein Drenkhan et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
forest pathology, invasion, pathway of pathogens, global trade, Dothistroma needle blight (), Brown spot needle blight (), Diplodia tip blight (, syn. and ), ash dieback ()