Worldwide genetic structure elucidates the Eurasian origin and invasion pathways of Dothistroma septosporum, causal agent of Dothistroma needle blight

Mullett, Martin S. (author), Drenkhan, Rein (author), Adamson, Kalev (author), Boroń, Piotr (author), Lenart-Boroń, Anna (author), Barnes, Irene (author), Tomšovský, Michal (author), Jánošíková, Zuzana (author), Adamčíková, Katarína (author), Ondrušková, Emília (author), Piškur, Barbara (author), Hauptman, Tine (author)

Dothistroma septosporum, the primary causal agent of Dothistroma needle blight, is one of the most significant foliar pathogens of pine worldwide. Its wide host and environmental ranges have led to its global success as a pathogen and severe economic damage to pine forests in many regions. This comprehensive global population study elucidated the historical migration pathways of the pathogen to reveal the Eurasian origin of the fungus. When over 3800 isolates were examined, three major population clusters were revealed: North America, Western Europe, and Eastern Europe, with distinct subclusters in the highly diverse Eastern European cluster. Modeling of historical scenarios using approximate Bayesian computation revealed the North American cluster was derived from an ancestral population in Eurasia. The Northeastern European subcluster was shown to be ancestral to all other European clusters and subclusters. The Turkish subcluster diverged first, followed by the Central European subcluster, then the Western European cluster, which has subsequently spread to much of the Southern Hemisphere. All clusters and subclusters contained both mating-types of the fungus, indicating the potential for sexual reproduction, although asexual reproduction remained the primary mode of reproduction. The study strongly suggests the native range of D. septosporum to be in Eastern Europe (i.e., the Baltic and Western Russia) and Western Asia.

• Language: English
• Keywords: Mycosphaerella pini, biogeography, ABC, DNB, global spread, introduction pathways, invasive pathogen, global spread
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: BF - Biotechnical Faculty
• Publication status: Published
• Publication version: Version of Record
• Publication date: 03.02.2021
• Year: 2021
• Number of pages: 28 str.
• Numbering: Vol. 7, iss. 2
• PID: 20.500.12556/RUL-124686
• UDC: 630*4
• ISSN on article: 2309-608X
• DOI: 10.3390/jof7020111
• COBISS.SI-ID: 50111491
• Publication date in RUL: 09.02.2021

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
• Licensing start date: 09.02.2021

Secondary language

• Language: Slovenian
• Keywords: Mycosphaerella pini, biogeografija, rdeča pegavost borovih iglic, globalno razširjanje, invazivni organizmi, poti vnosa