« Previous AbstractCapturing in Vivo Plant Metabolism by Real-Time Analysis of Low to High Molecular Weight Volatiles    Next AbstractEfficiency of integrated electrooxidation and anaerobic digestion of waste activated sludge »

J Econ Entomol

Title:		Host selection and probing behavior of the poplar aphid Chaitophorus leucomelas (Sternorrhyncha: Aphididae) on two poplar hybrids with contrasting susceptibility to aphids
Author(s):		Barrios-San Martin J; Quiroz A; Verdugo JA; Parra L; Hormazabal E; Astudillo LA; Rojas-Herrera M; Ramirez CC;
Address:
Journal Title:		J Econ Entomol
Year:		2014
Volume:		107
Issue:		1
Page Number:		268 - 276
DOI:		10.1603/ec13282
ISSN/ISBN:		0022-0493 (Print) 0022-0493 (Linking)
Abstract:		"Poplars are frequently attacked by aphids. The differential susceptibility of poplar hybrids to the aphid Chaitophorus leucomelas Koch (Sternorrhyncha: Aphididae) has been described, but the mechanism underlying this pattern is unknown. This work tested the hypothesis that poplar resistance to this aphid is associated with the presence of volatiles and secondary plant compounds that affect host selection and feeding behavior. This hypothesis was tested by studying the host choice and feeding behavior of C. leucomelas on two poplar hybrids with contrasting susceptibilities to this aphid ([Populus trichocarpa Torrey & Gray x Populus deltoides Bartram ex Marshall] x P. deltoides [TD x D], and [P. trichocarpa x Populus maximowiczii Henry] x [P. trichocarpa x P. maximowiczii] [TM x TM]). The results showed that C. leucomelas rejected leaves of the TM x TM hybrid and did not prefer odors from either hybrid. Electronic monitoring of the probing behavior of C. leucomelas suggested the involvement of antifeedant factors in the TM x TM hybrid. In addition, the chemical characterization of volatiles, epicuticular waxes, and internal phenols of leaves from both poplar hybrids revealed that TM x TM had a higher abundance of monoterpenes, sesquiterpenes, n-alkanes, and phenols. These results are discussed in terms of their contribution to poplar breeding programs aimed at enhancing insect resistance"
Keywords:		Animals *Aphids *Food Preferences Gas Chromatography-Mass Spectrometry *Herbivory Olfactometry Phenols/chemistry Plant Leaves/chemistry Populus/*chemistry Volatile Organic Compounds/*chemistry Waxes/chemistry;
Notes:		"MedlineBarrios-San Martin, Joceline Quiroz, Andres Verdugo, Jaime A Parra, Leonardo Hormazabal, Emilio Astudillo, Luis A Rojas-Herrera, Marcelo Ramirez, Claudio C eng Comparative Study Research Support, Non-U.S. Gov't England 2014/03/29 J Econ Entomol. 2014 Feb; 107(1):268-76. doi: 10.1603/ec13282"