Semiochemicals related to the aphid Cinara pilicornis and its host, Picea abies:: A method to assign nepetalactone diastereomers

被引：9

作者：

Pettersson, Marie ^{[1
]}

Unelius, C. Rikard ^{[2
]}

Valterova, Irena ^{[3
]}

Borg-Karlson, Anna-Karin ^{[1
]}

机构：

[1] Sch Chem Sci & Engn, Dept Chem, KTH, Ecol Chem Grp, SE-10044 Stockholm, Sweden

[2] Univ Kalmar, Sch Pure & Appl Nat Sci, SE-39182 Kalmar, Sweden

[3] Acad Sci Czech Republic, Inst Organ Chem & Biochem, CR-16610 Prague 6, Czech Republic

来源：

JOURNAL OF CHROMATOGRAPHY A | 2008年 / 1180卷 / 1-2期

关键词：

aphid; conifer; pheromone; nepetalactone; diastereomer; SPME-GC-MS; semiochemicals;

D O I：

10.1016/j.chroma.2007.12.020

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

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. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：165 / 170

页数：6

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