« Previous AbstractBiophysical studies on fragments of the alpha-factor receptor protein    Next Abstract"Activity of octylthiotrifluoropropan-2-one, a potent esterase inhibitor, on growth, development, and intraspecific communication in Spodoptera littoralis and Sesamia nonagrioides" »

J Agric Food Chem

Title:		"Behavioral responses of the diamondback moth, Plutella xylostella, to green leaf volatiles of Brassica oleracea subsp. capitata"
Author(s):		Reddy GV; Guerrero A;
Address:		"Department of Biological Organic Chemistry, Institute of Chemical and Environmental Research (CSIC), Jordi Girona 18-26, 08034 Barcelona, Spain"
Journal Title:		J Agric Food Chem
Year:		2000
Volume:		48
Issue:		12
Page Number:		6025 - 6029
DOI:		10.1021/jf0008689
ISSN/ISBN:		0021-8561 (Print) 0021-8561 (Linking)
Abstract:		"Green leaf volatiles (GLVs) from Brassica oleracea subsp. capitata L. have been identified as 1-hexanol, (Z)-3-hexen-1-ol, 1-hexen-3-ol, hexanal, (E)-2-hexenal, hexyl acetate, and (Z)-3-hexenyl acetate, by their mass spectra and retention times in comparison with authentic samples. No isothiocyanates were found in the extract. The activity of these chemicals has been determined on mated and unmated males and females of the diamondback moth (DBM) Plutella xylostella in the laboratory (wind tunnel) and in the field. On unmated males, mixtures of (Z)-3-hexenyl acetate, (E)-2-hexenal, and (Z)-3-hexen-1-ol with the pheromone induced attractant/arresting behavior in 80-100% of the males tested, significantly higher than the effect induced by the pheromone alone. On mated males and unmated females the effect of the GLVs alone or in combination with the pheromone was poor, while on mated females these compounds elicited upwind flight and arresting behavior in 40-60% of the females assayed. There was no synergism when these chemicals were mixed with the pheromone. In the field, (Z)-3-hexenyl acetate, the most active GLV in laboratory tests, when mixed with the pheromone in 1:1 ratio, enhanced 6-7-fold the number of females and 20-30% the number of males caught by traps over those baited with the pheromone alone. Our results indicate that the enhancement of the attraction of both males and females of the DBM to traps baited with pheromone blended with the relatively inexpensive and environmentally safe (Z)-3-hexenyl acetate may be important for future control strategies of the pest"
Keywords:		"Animals Behavior, Animal Brassica/*chemistry Female Male Moths/*physiology Plant Extracts/chemistry Sex Attractants Sexual Behavior, Animal;"
Notes:		"MedlineReddy, G V Guerrero, A eng Research Support, Non-U.S. Gov't 2001/04/21 J Agric Food Chem. 2000 Dec; 48(12):6025-9. doi: 10.1021/jf0008689"