creators_name: Eyles, A creators_name: Jones, W creators_name: Riedl, K creators_name: Cipollini, D creators_name: Schwartz, S creators_name: Chan, K creators_name: Herms, DA creators_name: Bonello, P creators_id: aeyles-ts@postoffice.utas.edu.au creators_id: creators_id: creators_id: don.cipollini@wright.edu creators_id: creators_id: creators_id: herms.2@osu.edu creators_id: bonello.2@osu.edu type: article datestamp: 2008-05-11 22:39:40 lastmod: 2008-07-18 10:55:43 metadata_visibility: show title: Comparative phloem chemistry of manchurian (Fraxinus mandshurica) and two North American ash species (Fraxinus americana and Fraxinus pennsylvanica) ispublished: pub subjects: 270402 subjects: 300603 subjects: 250402 full_text_status: restricted keywords: Agrilus planipennis . LC-MS . Hydroxycoumarins . Phenolics . Coevolution . Host resistance . Invasive species note: The original publication is available at www.springerlink.com abstract: Recent studies have investigated interspecific variation in resistance of ash (Fraxinus spp.) to the exotic wood-boring beetle, emerald ash borer (EAB, Agrilus planipennis). Manchurian ash (Fraxinus mandshurica) is an Asian species that has coevolved with EAB. It experiences little EAB-induced mortality compared to North American ashes. Host phloem chemistry, both constitutive and induced, might partly explain this interspecific variation in resistance. We analyzed the constitutive phloem chemistry of three ash species: Manchurian ash and North American white (Fraxinus americana) and green (Fraxinus pennsylvanica) ash. Analysis of the crude phloem extracts revealed the presence of an array of phenolic compounds including hydroxycoumarins, a monolignol, lignans, phenylethanoids, and secoiridoids. Both qualitative and quantitative differences were observed among the three ash species. Hydroxycoumarins and the phenylethanoids, calceloariosides A and B, were present only in the phloem of Manchurian ash and might represent a mechanism of resistance against EAB. date: 2007 date_type: published publication: Journal of Chemical Ecology volume: 33 number: 7 pagerange: 1430-1448 id_number: 10.1007/s10886-007-9312-3 refereed: TRUE issn: 0098-0331 official_url: http://dx.doi.org/10.1007/s10886-007-9312-3 citation: Eyles, A and Jones, W and Riedl, K and Cipollini, D and Schwartz, S and Chan, K and Herms, DA and Bonello, P (2007) Comparative phloem chemistry of manchurian (Fraxinus mandshurica) and two North American ash species (Fraxinus americana and Fraxinus pennsylvanica). Journal of Chemical Ecology, 33 (7). pp. 1430-1448. ISSN 0098-0331 document_url: http://eprints.utas.edu.au/6307/1/Eyles_et_al._2007_JCE.pdf