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Floral scent chemistry within the genus Linnaea (Caprifoliaceae)
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2018 (English)In: Nordic Journal of Botany, ISSN 0107-055X, E-ISSN 1756-1051, article id e01732Article in journal (Refereed) Published
Abstract [en]

‘Beauty bush’ and ‘twin ower’ are common names attributed to two well-recognizable species belonging to the genus Linnaea (16 spp.) – L. amabilis and L. borealis – long admired by botanists and gardeners for their perfumed paired bell-shaped owers. In the present study, we investigated their oral scent compositions through gas chro- matography – mass spectrometry (GC-MS) analysis of dynamic headspace samples. Because the owers of L. borealis in wild populations are fragrant both during the day and in the evening, circadian variation of scent emission was also assessed for this species. In total, 26 chemical compounds comprise the oral scent bouquets of L. amabilis and L. borealis, identi ed as monoterpenes (14), benzenoids and phenyl- propanoids (5), aliphatics (3), sesquiterpenes (3) and irregular terpenes (1). Whereas monoterpenes, notably (-)-α- and β-pinene, dominated the scent of L. amabilis (over 82% relative abundance), benzene derivates: 1,4 dimethoxybenzene, anisalde- hyde, 2-phenylethanol, benzaldehyde and nicotinaldehyde were exclusive to anal- ysed headspace samples of L. borealis, accounting for 52% to 100% of their relative compositions, in three Swedish populations. A southwestern Finnish population was characterized by the four rst mentioned benzenoid compounds and large amounts of (-)-α- and β-pinenes plus two aliphatic substances. e scent compounds identi- ed for both species are ubiquitous and may serve as generalist attractants/stimulants for a broad assortment of anthophilous insects. e basic work on the ower scent of L. amabilis and L. borealis should inspire studies of their pollination biology, primarily the behaviour-guiding roles of the characteristic emitted volatiles. 

Place, publisher, year, edition, pages
2018. article id e01732
National Category
Botany
Research subject
Diversity of life
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URN: urn:nbn:se:nrm:diva-2788DOI: 10.1111/njb.01732OAI: oai:DiVA.org:nrm-2788DiVA, id: diva2:1197902
Available from: 2018-04-16 Created: 2018-04-16 Last updated: 2018-04-16Bibliographically approved

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  • apa
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