![]() ![]() Dothistroma needle blight has been reported on 113 taxa, of which 99 are in the genus Pinus ( Drenkhan et al., 2016 Jánošíková-Hečková et al., 2018 Barnes et al., 2022) and reports of the disease on new hosts and in new geographical regions are increasing ( Jánošíková-Hečková et al., 2018 Matsiakh et al., 2018 Mullett et al., 2018 Ondrušková et al., 2018 EPPO, 2019 Mesanza et al., 2021). The disease has a long history of having damaged plantations in the Southern Hemisphere dating back to the 1960s ( Gibson, 1972), but during the course of the last three decades, it has also increased in severity and incidence in the Northern Hemisphere ( Drenkhan and Hanso, 2009 Welsh et al., 2009 Fabre et al., 2012 Boroń et al., 2016 Drenkhan et al., 2016 Ghelardini et al., 2020). pini in Europe has been strongly influenced by human activity in Europe.ĭothistroma needle blight (DNB) is recognized as one of the most important diseases of Pinus spp., both in planted and native forests, worldwide. The observed population structure and several shared haplotypes between non-bordering countries provides good evidence that the movement of D. Evidence for sexual recombination was supported only in the population from Spain. ![]() ![]() Both mating types were detected in most countries, with the exception of Hungary, Russia and Slovenia. Populations from France and Spain displayed the highest levels of genetic diversity followed by the population in Ukraine. A total of 109 unique multilocus haplotypes were identified and structure analyses suggested that the populations are influenced by location rather than host species. In total, 345 isolates from Belgium, the Czech Republic, France, Hungary, Romania, Western Russia, Serbia, Slovakia, Slovenia, Spain, Switzerland, and Ukraine were screened using microsatellite and species-specific mating type markers. pini provided an opportunity to investigate the diversity, structure, and mode of reproduction for populations collected over a period of 12 years, on eight different hosts in Europe. The recent development of 16 microsatellite markers for D. pini is known only from the United States and Europe, and there is a distinct lack of knowledge regarding its population structure and genetic diversity. Dothistroma septosporum has a wide geographic distribution and is relatively well-known. 9Ukrainian Forest Research Institute, Forestry and Forest Melioration, Kharkiv, Ukraine, Slovakiaĭothistroma needle blight (DNB) is an important disease of Pinus species that can be caused by one of two distinct but closely related pathogens Dothistroma septosporum and Dothistroma pini.8Department of Forest Mycology and Plant Pathology, Swedish University of Agricultural Science, Uppsala, Sweden.7Institute of Forest Ecology Slovak Academy of Sciences, Department of Plant Pathology and Mycology, Nitra, Slovakia.6Swiss Federal Research Institute WSL, Birmensdorf, Switzerland.5Université de Lorraine, INRAE-Grand-Est, UMR1136 Interactions Arbres, Microorganismes, Nancy, France.4Phytophthora Research Centre, Mendel University in Brno, Brno, Czechia.3Southern Swedish Forest Research Centre, Swedish University of Agricultural Science, Alnarp, Sweden.2Slovenian Forestry Institute, Ljubljana, Slovenia. ![]() 1Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Pretoria, South Africa.Mullett 4 Benoit Marçais 5 Valentin Queloz 6* Katarina Adamčíková 7 Kateryna Davydenko 8,9 Irene Barnes 1* Wingfield 1 Dušan Sadiković 2,3 Martin S. ![]()
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