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Comparative Phloem Chemistry of Manchurian (Fraxinus mandshurica) and Two North American Ash Species (F. americana and F. pennsylvanica)


Eyles, A and Jones, W and Riedl, K and Cipollini, D and Schwartz, S and Chan, K and Herms, DA and Bonello, P, Comparative Phloem Chemistry of Manchurian (Fraxinus mandshurica) and Two North American Ash Species (F. americana and F. pennsylvanica), Journal of Chemical Ecology, 33, (7) pp. 1430-1448. ISSN 0098-0331 (2007) [Refereed Article]

DOI: doi:10.1007/s10886-007-9312-3


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.

Item Details

Item Type:Refereed Article
Keywords:Agrilus planipennis - LC-MS - Hydroxycoumarins - Phenolics - Coevolution - Host resistance - Invasive species
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Forestry sciences
Research Field:Forest health and pathology
Objective Division:Manufacturing
Objective Group:Wood, wood products and paper
Objective Field:Wood, wood products and paper not elsewhere classified
UTAS Author:Eyles, A (Dr Alieta Eyles)
ID Code:45305
Year Published:2007
Web of Science® Times Cited:86
Deposited By:Agricultural Science
Deposited On:2007-08-01
Last Modified:2009-04-03

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