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Arch Insect Biochem Physiol

Title:		"Electrophysiological response patterns of 16 olfactory neurons from the trichoid sensilla to odorant from fecal volatiles in the locust, locusta migratoria manilensis"
Author(s):		Cui X; Wu C; Zhang L;
Address:		"Key Lab for Biological Control of the Ministry of Agriculture, Department of Entomology, China Agricultural University, China"
Journal Title:		Arch Insect Biochem Physiol
Year:		2011
Volume:		20110302
Issue:		2
Page Number:		45 - 57
DOI:		10.1002/arch.20420
ISSN/ISBN:		1520-6327 (Electronic) 0739-4462 (Linking)
Abstract:		"Locusts are the most serious pests of crops in greater part of the world. They locate their host plants primarily through olfactory cues, using antennal chemosensilla, which house olfactory receptor neurons (ORNs). Despite the great economical interest of these species, their olfactory neurons have been poorly investigated at the functional level. In this study, we have used single sensillum recordings (SSRs) to obtain response patterns of ORNs from the antennal trichoid sensilla to various chemicals in the oriental locust Locusta migratoria. On the basis of their spontaneous spike amplitudes, trichoid sensilla could be distinguished into two types, housing two or three ORNs, respectively. These two structural types could be further classified into seven functional subtypes. Nine different odorants that are present in the locust feces were used as stimulants during SSRs. In particular, benzaldehyde elicited inhibitory responses in most of the ORNs tested. Moreover, in a majority of these ORNs, the excitatory responses obtained with trans-2-hexenal or 2-heptanone was inhibited when benzaldehyde was mixed with these stimulants. At least 16 response patterns of these ORNs to nine chemicals were identified by SSRs, suggesting a high complexity of the cellular mechanisms underlying chemoreception in locusts"
Keywords:		Animals Arthropod Antennae/drug effects/physiology Feces/chemistry Female Locusta migratoria/*physiology Male Odorants/*analysis Olfactory Receptor Neurons/drug effects/*physiology Sensilla/drug effects/physiology Volatile Organic Compounds/pharmacology;
Notes:		"MedlineCui, Xiaojie Wu, Caihong Zhang, Long eng Research Support, Non-U.S. Gov't 2011/03/04 Arch Insect Biochem Physiol. 2011 Jun; 77(2):45-57. doi: 10.1002/arch.20420. Epub 2011 Mar 2"