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Interactions among Norway spruce, the bark beetle Ips typographus and its fungal symbionts in times of drought

Netherer, Sigrid and Kandasamy, Dineshkumar and Jirosova, Anna and Kalinova, Blanka and Schebeck, Martin and Schlyter, Fredrik (2021). Interactions among Norway spruce, the bark beetle Ips typographus and its fungal symbionts in times of drought. Journal of Pest Science. 94 , 591-614
[Research article]

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Abstract

Resilience and functionality of European Norway spruce forests are increasingly threatened by mass outbreaks of the bark beetle Ips typographus promoted by heat, wind throw and drought. Here, we review current knowledge on Norway spruce and I. typographus interactions from the perspective of drought-stressed trees, host selection, colonisation behaviour of beetles, with multi-level effects of symbiotic ophiostomatoid fungi. By including chemo-ecological, molecular and behavioural perspectives, we provide a comprehensive picture on this complex, multitrophic system in the light of climate change. Trees invest carbon into specialised metabolism to produce defence compounds against biotic invaders; processes that are strongly affected by physiological stress such as drought. Spruce bark contains numerous terpenoid and phenolic substances, which are important for bark beetle aggregation and attack success. Abiotic stressors such as increased temperatures and drought affect composition, amounts and emission rates of volatile compounds. Thus, drought events may influence olfactory responses of I. typographus, and further the pheromone communication enabling mass attack. In addition, I. typographus is associated with numerous ophiostomatoid fungal symbionts with multiple effects on beetle life history. Symbiotic fungi degrade spruce toxins, help to exhaust tree defences, produce beetle semiochemicals, and possibly provide nutrition. As the various fungal associates have different temperature optima, they can influence the performance of I. typographus differently under changing environmental conditions. Finally, we discuss why effects of drought on tree-killing by bark beetles are still poorly understood and provide an outlook on future research on this eruptive species using both, field and laboratory experiments.

Authors/Creators:Netherer, Sigrid and Kandasamy, Dineshkumar and Jirosova, Anna and Kalinova, Blanka and Schebeck, Martin and Schlyter, Fredrik
Title:Interactions among Norway spruce, the bark beetle Ips typographus and its fungal symbionts in times of drought
Series Name/Journal:Journal of Pest Science
Year of publishing :2021
Volume:94
Page range:591-614
Number of Pages:24
Publisher:SPRINGER HEIDELBERG
Associated Programs and Other Stakeholders:?? SLU.id.platform-plantprot ??
ISSN:1612-4758
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:Picea abies, Spruce bark beetle, Ophiostomatoid fungi, Drought, Tree defence, Specialised metabolites
URN:NBN:urn:nbn:se:slu:epsilon-p-111087
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-111087
Additional ID:
Type of IDID
DOI10.1007/s10340-021-01341-y
Web of Science (WoS)000620424800001
ID Code:25481
Faculty:LTV - Fakulteten för landskapsarkitektur, trädgårds- och växtproduktionsvetenskap
Department:(LTJ, LTV) > Department of Plant Protection Biology
Deposited By: SLUpub Connector
Deposited On:22 Sep 2021 11:24
Metadata Last Modified:22 Sep 2021 11:31

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