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Killing two enemies with one stone? Genomics of resistance to two sympatric pathogens in Norway spruce

Capador-Barreto, Hernán Dario and Bernhardsson, Carolina and Milesi, Pascal and Vos, Ingrid and Lundén, Karl and Wu, Harry and Karlsson, Bo and Ingvarsson, Pär and Stenlid, Jan and Elfstrand, Malin (2021). Killing two enemies with one stone? Genomics of resistance to two sympatric pathogens in Norway spruce. Molecular Ecology. 30 , 4433-4447
[Research article]

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Abstract

Trees must cope with the attack of multiple pathogens, often simultaneously during their long lifespan. Ironically, the genetic and molecular mechanisms controlling this process are poorly understood. The objective of this study was to compare the genetic component of resistance in Norway spruce to Heterobasidion annosum s.s. and its sympatric congener Heterobasidion parviporum. Heterobasidion root- and stem-rot is a major disease of Norway spruce caused by members of the Heterobasidion annosum species complex. Resistance to both pathogens was measured using artificial inoculations in half-sib families of Norway spruce trees originating from central to northern Europe. The genetic component of resistance was analysed using 63,760 genome-wide exome-capture sequenced SNPs and multitrait genome-wide associations. No correlation was found for resistance to the two pathogens; however, associations were found between genomic variants and resistance traits with synergic or antagonist pleiotropic effects to both pathogens. Additionally, a latitudinal cline in resistance in the bark to H. annosum s.s. was found; trees from southern latitudes, with a later bud-set and thicker stem diameter, allowed longer lesions, but this was not the case for H. parviporum. In summary, this study detects genomic variants with pleiotropic effects which explain multiple disease resistance from a genic level and could be useful for selection of resistant trees to both pathogens. Furthermore, it highlights the need for additional research to understand the evolution of resistance traits to multiple pathogens in trees.

Authors/Creators:Capador-Barreto, Hernán Dario and Bernhardsson, Carolina and Milesi, Pascal and Vos, Ingrid and Lundén, Karl and Wu, Harry and Karlsson, Bo and Ingvarsson, Pär and Stenlid, Jan and Elfstrand, Malin
Title:Killing two enemies with one stone? Genomics of resistance to two sympatric pathogens in Norway spruce
Series Name/Journal:Molecular Ecology
Year of publishing :2021
Volume:30
Page range:4433-4447
Number of Pages:15
Publisher:WILEY
ISSN:0962-1083
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 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Forest Science
Keywords:cline, disease resistance, genome-wide association study, Picea abies, pleiotropy, root-rot
URN:NBN:urn:nbn:se:slu:epsilon-p-113929
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-113929
Additional ID:
Type of IDID
DOI10.1111/mec.16058
Web of Science (WoS)000681286200001
ID Code:25652
Faculty:S - Faculty of Forest Sciences
NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Forest Mycology and Plant Pathology
(S) > Dept. of Forest Mycology and Plant Pathology

(NL, NJ) > Dept. of Plant Biology and Forest Genetics (until 131231)
(S) > Dept. of Forest Genetics and Plant Physiology
Deposited By: SLUpub Connector
Deposited On:12 Oct 2021 17:25
Metadata Last Modified:13 Oct 2021 05:01

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