Change search
ReferencesLink to record
Permanent link

Direct link
Fungal Symbionts of the Spruce Bark Beetle Synthesize the Beetle Aggregation Pheromone 2-Methyl-3-buten-2-ol
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.ORCID iD: 0000-0003-4970-8352
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.
2015 (English)In: Journal of Chemical Ecology, ISSN 0098-0331, E-ISSN 1573-1561Article in journal (Refereed) Published
Abstract [en]

Tree-killing bark beetles depend on aggregation pheromones to mass-attack their host trees and overwhelm their resistance. The beetles are always associated with phytopathogenic ophiostomatoid fungi that probably assist in breaking down tree resistance, but little is known about if or how much these fungal symbionts contribute to the beetles’ aggregation behavior. In this study, we determined the ability of four major fungal symbionts of the spruce bark beetle Ips typographus to produce beetle aggregation pheromones. The fungi were incubated on Norway spruce Picea abies bark, malt agar, or malt agar amended with 0.5 % 13C glucose. Volatiles present in the headspace of each fungus were analyzed for 7 days after incubation using a SPME autosampler coupled to a GC/MS. Two Grosmannia species (G. penicillata and G. europhioides) produced large amounts of 2-methyl-3-buten-2-ol (MB), the major component in the beetles’ aggregation pheromone blend, when growing on spruce bark or malt agar. Grosmannia europhioides also incorporated 13C glucose into MB, demonstrating that the fungi can synthesize MB de novo using glucose as a carbon source. This is the first clear evidence that fungal symbionts of bark beetles can produce components in the aggregation pheromone blend of their beetle vectors. This provides new insight into the possible ecological roles of fungal symbionts in bark beetle systems and may deepen our understanding of species interactions and coevolution in these important biological systems.

Place, publisher, year, edition, pages
Springer Publishing Company, 2015.
Keyword [en]
Bluestain fungi, Plant-insect-microbe interactions, Scolytinae
National Category
Chemical Sciences
URN: urn:nbn:se:kth:diva-175003DOI: 10.1007/s10886-015-0617-3ISI: 000362333400008ScopusID: 2-s2.0-84943200209OAI: diva2:874930
Swedish Research Council Formas, 229-2011-890

QC 20151130

Available from: 2015-11-30 Created: 2015-10-09 Last updated: 2016-06-01Bibliographically approved

Open Access in DiVA

fulltext(2123 kB)2 downloads
File information
File name FULLTEXT01.pdfFile size 2123 kBChecksum SHA-512
Type fulltextMimetype application/pdf

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Zhao, TaoAxelsson, KarolinBorg-Karlson, Anna-Karin
By organisation
Organic Chemistry
In the same journal
Journal of Chemical Ecology
Chemical Sciences

Search outside of DiVA

GoogleGoogle Scholar
Total: 2 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 81 hits
ReferencesLink to record
Permanent link

Direct link