TY  - JOUR
N1  - The original publication is available at www.springerlink.com
ID  - epprod6307
UR  - http://dx.doi.org/10.1007/s10886-007-9312-3
IS  - 7
A1  - Eyles, A
A1  - Jones, W
A1  - Riedl, K
A1  - Cipollini, D
A1  - Schwartz, S
A1  - Chan, K
A1  - Herms, DA
A1  - Bonello, P
Y1  - 2007///
N2  - 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.
JF  - Journal of Chemical Ecology
VL  - 33
KW  - Agrilus planipennis . LC-MS . Hydroxycoumarins . Phenolics . Coevolution .
Host resistance . Invasive species
SN  - 0098-0331
TI  - Comparative phloem chemistry of manchurian (Fraxinus mandshurica) and two North American ash species (Fraxinus americana and Fraxinus pennsylvanica)
SP  - 1430
AV  - restricted
EP  - 1448
ER  -