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Storm-induced tree resistance and chemical differences in Norway spruce (Picea abies)
KTH, Skolan för kemivetenskap (CHE), Kemi, Organisk kemi.
KTH, Skolan för kemivetenskap (CHE), Kemi, Organisk kemi.
2011 (Engelska)Ingår i: Annals of Forest Science, ISSN 1286-4560, E-ISSN 1297-966X, Vol. 68, nr 3, s. 657-665Artikel i tidskrift (Refereegranskat) 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.

Ort, förlag, år, upplaga, sidor
2011. Vol. 68, nr 3, s. 657-665
Nationell ämneskategori
Jordbruksvetenskap
Identifikatorer
URN: urn:nbn:se:kth:diva-33318DOI: 10.1007/s13595-011-0049-3ISI: 000290913000021Scopus ID: 2-s2.0-80051488241OAI: oai:DiVA.org:kth-33318DiVA, id: diva2:414423
Anmärkning
QC 20110607Tillgänglig från: 2011-05-03 Skapad: 2011-05-03 Senast uppdaterad: 2017-12-11Bibliografiskt granskad
Ingår i avhandling
1. Conifer chemical defense: Rugulation of bark beetle colonization and pheromone emission
Öppna denna publikation i ny flik eller fönster >>Conifer chemical defense: Rugulation of bark beetle colonization and pheromone emission
2011 (Engelska)Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
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.

Ort, förlag, år, upplaga, sidor
Stockholm: KTH Royal Institute of Technology, 2011. s. 75
Serie
Trita-CHE-Report, ISSN 1654-1081 ; 2011:16
Nyckelord
Picea abies, Ips typographus, Ceratocystis polonica, methyl jasmonate, windstorm, stress response, terpenes, phenols, colonization, pheromone emission
Nationell ämneskategori
Jordbruksvetenskap
Identifikatorer
urn:nbn:se:kth:diva-33199 (URN)978-91-7415-884-7 (ISBN)
Disputation
2011-05-23, sal F3, Lindstedtsvägen 26, KTH, Stockholm, 15:52 (Engelska)
Opponent
Handledare
Anmärkning
QC 20110503Tillgänglig från: 2011-05-03 Skapad: 2011-04-29 Senast uppdaterad: 2011-05-03Bibliografiskt granskad

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Totalt: 135 träffar
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