Semiochemicals related to the aphid Cinara pillicornis (Hartig) and its host, Picea abies. A method to assign diastereomers of nepetalactone
2008 (English)In: Journal of Chromatography A, ISSN 0021-9673, E-ISSN 1873-3778, Vol. 1180, no 1-2, 165-170 p.Article in journal (Refereed) Published
Volatiles released by seedlings of Norway spruce infested with the aphid Cinara pilicornis were analyzed using SPME–GC–MS. Among the stress-induced compounds released by the host plant, citronellol, cis–trans-nepetalactone and cis–trans-nepetalactol was found. These compounds originated from the aphids and they were assumed to be pheromone components for this aphid species. To determine the relative stereochemistry of the nepetalactone, a diagnostic method was developed. The method was based on multivariate analysis of tabulated relative intensities of mass fragments of the four nepetalactone diastereomers. In the practical method described, a few pairs of fragments in the mass spectra were compared and, in combination with the Kovat's index, were used to unambiguously identify the relative stereochemistry of the nepetalactone.
Place, publisher, year, edition, pages
2008. Vol. 1180, no 1-2, 165-170 p.
Aphid, Conifer, Pheromone, Nepetalactone, Diastereomer, SPME–GC–MS, Semiochemicals
IdentifiersURN: urn:nbn:se:kth:diva-7043DOI: 10.1016/j.chroma.2007.12.020ISI: 000253060900018ScopusID: 2-s2.0-38349035715OAI: oai:DiVA.org:kth-7043DiVA: diva2:11930
Uppdaterad till artikel(20110214)2007-05-042007-05-042011-09-12Bibliographically approved