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Storm-induced tree resistance and chemical differences in Norway spruce (Picea abies)
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.
2011 (English)In: Annals of Forest Science, ISSN 1286-4560, E-ISSN 1297-966X, Vol. 68, no 3, 657-665 p.Article in journal (Refereed) Published
Abstract [en]

Windstorm is one of the most destructive environmental disturbance factors on forests, but its influence on conifer defense chemistry and susceptibility to insects and diseases is not well understood.

Place, publisher, year, edition, pages
2011. Vol. 68, no 3, 657-665 p.
National Category
Agricultural Science
Identifiers
URN: urn:nbn:se:kth:diva-33318DOI: 10.1007/s13595-011-0049-3ISI: 000290913000021Scopus ID: 2-s2.0-80051488241OAI: oai:DiVA.org:kth-33318DiVA: diva2:414423
Note
QC 20110607Available from: 2011-05-03 Created: 2011-05-03 Last updated: 2017-12-11Bibliographically approved
In thesis
1. Conifer chemical defense: Rugulation of bark beetle colonization and pheromone emission
Open this publication in new window or tab >>Conifer chemical defense: Rugulation of bark beetle colonization and pheromone emission
2011 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Terpenes and phenols are of importance in conifer defense against insects and pathogens. Knowledge about tree chemical defense is vital for developing practical methods to maintain healthy forests. With the aims of characterizing the defensive chemical induction in Norway spruce Picea abies and demonstrating its ecological function to spruce bark beetle Ips typographus, we measured the terpenoid and phenolic content in the bark of mature Norway spruce trees suffering windstorm, inoculated with Ceratocystis polonica, or treated with methyl jasmonate (MeJA), and investigated the colonization and pheromone emission of I. typographus.

All three stressors altered the chemical profile in the bark of Norway spruce. Trees damaged by windstorm had lower proportions of (+)-3-carene and two unidentified stilbenes, and a higher taxifolin glycoside content than trees without apparent windstorm damage; C. polonica inoculation induced extremely strong quantitative terpene accumulation in the wound reaction zone, but only increased the levels of (+)-3-carene, sabinene and terpinolene in the bark near the reaction zone; MeJA treatment generally elicited quantitative terpene accumulation, but the induction differed extensively between individual trees. In addition, logs from MeJA-treated tree showed much stronger wounding response compared to control logs.

The chemical profile of Norway spruce affected the colonization and pheromone emission of I. typographus. In response to fungal inoculation, terpene present in the reaction zone inhibited the colonization of I. typographus in a dose-dependent manner. Host defense elicited by MeJA treatment reduced emissions of 2-methyl-3-buten-2-ol and (S)-cis-verbenol, the two key aggregation pheromone components of I. typographus, and altered the ratio between the two components.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2011. 75 p.
Series
Trita-CHE-Report, ISSN 1654-1081 ; 2011:16
Keyword
Picea abies, Ips typographus, Ceratocystis polonica, methyl jasmonate, windstorm, stress response, terpenes, phenols, colonization, pheromone emission
National Category
Agricultural Science
Identifiers
urn:nbn:se:kth:diva-33199 (URN)978-91-7415-884-7 (ISBN)
Public defence
2011-05-23, sal F3, Lindstedtsvägen 26, KTH, Stockholm, 15:52 (English)
Opponent
Supervisors
Note
QC 20110503Available from: 2011-05-03 Created: 2011-04-29 Last updated: 2011-05-03Bibliographically approved

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