| Title: | "Semiochemicals related to the aphid Cinara pilicornis and its host, Picea abies: a method to assign nepetalactone diastereomers" |
| Author(s): | Pettersson M; Unelius CR; Valterova I; Borg-Karlson AK; |
| Address: | "KTH, School of Chemical Science and Engineering, Department of Chemistry, Ecological Chemistry Group, SE-100 44 Stockholm, Sweden" |
| DOI: | 10.1016/j.chroma.2007.12.020 |
| ISSN/ISBN: | 0021-9673 (Print) 0021-9673 (Linking) |
| Abstract: | "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" |
| Keywords: | Animals Aphids/*chemistry Gas Chromatography-Mass Spectrometry/*methods Picea/*parasitology Stereoisomerism; |
| Notes: | "MedlinePettersson, Marie Unelius, C Rikard Valterova, Irena Borg-Karlson, Anna-Karin eng Netherlands 2008/01/02 J Chromatogr A. 2008 Feb 8; 1180(1-2):165-70. doi: 10.1016/j.chroma.2007.12.020. Epub 2007 Dec 15" |
