Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Induced defenses change the chemical composition of pine seedlings and influence meal properties of the pine weevil Hylobius abietis
KTH, Skolan för kemivetenskap (CHE), Kemi, Organisk kemi. (AKBK/Ecological Chemistry Group)ORCID-id: 0000-0003-2867-2004
Department of Ecology, Swedish University of Agricultural Sciences.
Department of Ecology, Swedish University of Agricultural Sciences.
Department of Ecology, Swedish University of Agricultural Sciences.
Visa övriga samt affilieringar
2016 (Engelska)Ingår i: Phytochemistry, ISSN 0031-9422, E-ISSN 1873-3700, Vol. 130, s. 99-105Artikel i tidskrift (Refereegranskat) Epub ahead of print
Abstract [en]

The defense of conifers against phytophagous insects relies to a large extent on induced chemical defenses. However, it is not clear how induced changes in chemical composition influence the meal properties of phytophagous insects (and thus damage rates). The defense can be induced experimentally with methyl jasmonate (MeJA), which is a substance that is produced naturally when a plant is attacked. Here we used MeJA to investigate how the volatile contents of Scots pine (Pinus sylvestris L.) tissues influence the meal properties of the pine weevil (Hylobius abietis (L.)). Phloem and needles (both weevil target tissues) from MeJA-treated and control seedlings were extracted by n-hexane and analyzed by two-dimensional gas chromatography-mass spectrometry (2D GC-MS). The feeding of pine weevils on MeJA-treated and control seedlings were video-recorded to determine meal properties. Multivariate statistical analyses showed that phloem and needle contents of MeJA-treated seedlings had different volatile compositions compared to control seedlings. Levels of the pine weevil attractant (+)-α-pinene were particularly high in phloem of control seedlings with feeding damage. The antifeedant substance 2-phenylethanol occurred at higher levels in the phloem of MeJA-treated than in control seedlings. Accordingly, pine weevils fed slower and had shorter meals on MeJA-seedlings. The chemical compositions of phloem and needle tissues were clearly different in control seedlings but not in the MeJA-treated seedlings. Consequently, meal durations of mixed meals, i.e. both needles and phloem, were longer than phloem meals on control seedlings, while meal durations on MeJA seedlings did not differ between these meal contents. The meal duration influences the risk of girdling and plant death. Thus our results suggest a mechanism by which MeJA treatment may protect conifer seedlings against pine weevils.

Ort, förlag, år, upplaga, sidor
Elsevier, 2016. Vol. 130, s. 99-105
Nyckelord [en]
Pinus sylvestris, Pinaceae, Hylobius abietis, Short-term feeding, Induced defense, Methyl jasmonate, Phloem, Needles, Terpenes, Aromatics
Nationell ämneskategori
Organisk kemi Analytisk kemi Annan kemi Ekologi
Forskningsämne
Kemi
Identifikatorer
URN: urn:nbn:se:kth:diva-189767DOI: 10.1016/j.phytochem.2016.06.002ISI: 000383302900009Scopus ID: 2-s2.0-84995680434OAI: oai:DiVA.org:kth-189767DiVA, id: diva2:948885
Forskningsfinansiär
Stiftelsen för strategisk forskning (SSF), Parasite Resistant Trees
Anmärkning

QC 20160714

Tillgänglig från: 2016-07-14 Skapad: 2016-07-14 Senast uppdaterad: 2019-02-08Bibliografiskt granskad

Open Access i DiVA

Fulltext saknas i DiVA

Övriga länkar

Förlagets fulltextScopus

Personposter BETA

Lundborg, Lina

Sök vidare i DiVA

Av författaren/redaktören
Lundborg, LinaBorg-Karlson, Anna-Karin
Av organisationen
Organisk kemi
I samma tidskrift
Phytochemistry
Organisk kemiAnalytisk kemiAnnan kemiEkologi

Sök vidare utanför DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetricpoäng

doi
urn-nbn
Totalt: 55 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf