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Relationship and genetic structure among autoecious and heteroecious populations of Cronartium pini in northern Fennoscandia

Samils, Berit and Kaitera, Juha and Persson, Torgny and Stenlid, Jan and Barklund, Pia (2021). Relationship and genetic structure among autoecious and heteroecious populations of Cronartium pini in northern Fennoscandia. Fungal Ecology. 50 , 101032
[Research article]

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Abstract

Epidemics of Scots pine blister rust, caused by Cronartium pini, have become an increasing problem in northern Finland and Sweden. The biology of the rust fungus is complex, with two different life cycle forms that cannot be morphologically distinguished, and it is unclear to what extent the two forms contribute to the epidemics. Genetic structure of fourteen populations of C. pini were investigated in Fennoscandia. Distinction between the two life cycle forms, a heteroecious and an autoecious one, was made by determining zygosity using microsatellite markers, and AFLP markers were developed to analyse population genetic relationships. The results showed that the two life cycle forms are clearly differentiated and occur in separate populations. Within the life cycle forms, geographic differentiation was evident, probably due to restricted gene flow as well as connection with different alternating hosts. The host-alternating form dominated in the epidemic regions in northern Fennoscandia. Implications for silvicultural practices are discussed. (C) 2021 The Authors. Published by Elsevier Ltd.

Authors/Creators:Samils, Berit and Kaitera, Juha and Persson, Torgny and Stenlid, Jan and Barklund, Pia
Title:Relationship and genetic structure among autoecious and heteroecious populations of Cronartium pini in northern Fennoscandia
Series Name/Journal:Fungal Ecology
Year of publishing :2021
Volume:50
Article number:101032
Number of Pages:10
Publisher:ELSEVIER SCI LTD
ISSN:1754-5048
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
Keywords:Cronartium flaccidum, Peridermium pini, Endocronartium pini, Pinus sylvestris, Scots pine blister rust, Resin-top disease, Stem rust, Population genetics, Genetic diversity, Alternate hosts
URN:NBN:urn:nbn:se:slu:epsilon-p-111392
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-111392
Additional ID:
Type of IDID
DOI10.1016/j.funeco.2020.101032
Web of Science (WoS)000624372000009
ID Code:23247
Faculty:S - Faculty of Forest Sciences
Department:(NL, NJ) > Dept. of Forest Mycology and Plant Pathology
(S) > Dept. of Forest Mycology and Plant Pathology
Deposited By: SLUpub Connector
Deposited On:12 Apr 2021 10:23
Metadata Last Modified:12 Apr 2021 10:31

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