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Identifying Fraxinus excelsior tolerant to ash dieback: Visual field monitoring versus a molecular marker

Menkis, Audrius and Bakys, Remigijus and Stein Åslund, Matilda and Davydenko, Kateryna and Elfstrand, Malin and Stenlid, Jan and Vasaitis, Rimvydas (2020). Identifying Fraxinus excelsior tolerant to ash dieback: Visual field monitoring versus a molecular marker. Forest Pathology. 50 , e12572 , 1-4
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Abstract

Ash dieback (ADB) caused by the pathogen Hymenoscyphus fraxineus is the cause of massive mortality of Fraxinus spp. in Europe. The aim of this work was to check for the presence of the molecular marker for ADB tolerance in mapped healthy-looking F. excelsior trees, and to compare its occurrence in trees exhibiting severe ADB symptoms. Monitoring of 135 healthy-looking F. excelsior on the island of Gotland, Sweden, showed that after 3-4 years 99.3% of these trees had 0%-10% crown damage, thus remaining in a similar health condition as when first mapped. After 5-6 years, 94.7% of these trees had 0%-10% crown damage. Molecular analysis of leaf tissues from 40 of those showed the presence of the molecular marker in 34 (85.0%) trees, while it was absent in 6 (15.0%) trees. Analysis of leaf tissues from 40 severely ADB-diseased trees showed the presence of the molecular marker in 17 (42.5%) trees, but its absence in 23 (57.5%) trees (p < .0001). The results demonstrated that monitoring of healthy-looking F. excelsior is a simple and straightforward approach for the selection of presumably ADB-tolerant ash for future breeding. The cDNA-based molecular marker revealed moderate capacity on its own to discriminate between presumably ADB-tolerant and susceptible F. excelsior genotypes.

Authors/Creators:Menkis, Audrius and Bakys, Remigijus and Stein Åslund, Matilda and Davydenko, Kateryna and Elfstrand, Malin and Stenlid, Jan and Vasaitis, Rimvydas
Title:Identifying Fraxinus excelsior tolerant to ash dieback: Visual field monitoring versus a molecular marker
Year of publishing :2020
Volume:50
Article number:e12572
Number of Pages:4
Publisher:Blackwell Verlag GmbH
ISSN:1437-4781
Language:English
Publication Type:Journal 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 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Forest Science
Keywords:ash dieback, breeding for resistance, disease tolerance, Fraxinus, Hymenoscyphus fraxineus
URN:NBN:urn:nbn:se:slu:epsilon-p-105159
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-105159
Additional ID:
Type of IDID
DOI10.1111/efp.12572
Web of Science (WoS)000517164600006
ID Code:16963
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
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:08 May 2020 08:48
Metadata Last Modified:09 Sep 2020 14:18

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