« Previous AbstractDetermination of the nanoscale electrical properties of olfactory receptor hOR1A1 and their dependence on ligand binding: Towards the development of capacitance-operated odorant biosensors    Next AbstractImproved Sensing Capability of Integrated Semiconducting Metal Oxide Gas Sensor Devices »

Environ Entomol

Title:		Mechanisms of Soybean Host-Plant Resistance Against Megacopta cribraria (Hemiptera: Plataspidae)
Author(s):		Lahiri S; Reisig DD; Dean LL; Reay-Jones FPF; Greene JK; Carter TE; Mian R; Fallen BD;
Address:		"Department of Entomology and Plant Pathology, North Carolina State University, Vernon G. James Research and Extension Center, Plymouth, NC. USDA-ARS, Market Quality and Handling Research Unit, Raleigh, NC. Department of Plant and Environmental Sciences, Clemson University, Pee Dee Research and Education Center, Florence, SC. Department of Plant and Environmental Sciences, Clemson University, Edisto Research and Education Center, Blackville, SC. USDA-ARS, Soybean and Nitrogen Fixation Research Unit, Raleigh, NC"
Journal Title:		Environ Entomol
Year:		2020
Volume:		49
Issue:		4
Page Number:		876 - 885
DOI:		10.1093/ee/nvaa075
ISSN/ISBN:		1938-2936 (Electronic) 0046-225X (Linking)
Abstract:		"A number of soybean varieties traditionally bred for resistance to various soybean arthropod pests have been identified as resistant to Megacopta cribraria (F.) (Hemiptera: Plataspidae). However, the mechanisms of host-plant resistance (HPR) in this system are not understood. The goal of this study was to identify the mechanisms of resistance by examining the role of plant volatile organic compounds (VOCs) and free amino acids (FAAs) among 16 soybean varieties. Choice and no-choice cage experiments identified several soybean varieties that demonstrated antixenosis as well as antibiosis. However, resistance varied over time in certain soybean varieties, such as N02-7002 and PI567352B. Mean nymph number from choice experiments had positive correlations with the FAAs asparagine, tryptophan, alanine, phenylanaline, and serine; negative correlation with leucine and threonine. Four plant volatiles, hexanal, 2-pentylfuran, beta-cyclocitral, and cis-9-hexadecenal, were positively correlated with subsequent nymph development, whereas n-hexadecenoic acid was negatively correlated with nymph number only, in adult choice cage experiments. This study contributes to understanding the mechanisms of HPR through associations with plant VOCs and FAAs in relation to M. cribraria development and provides useful knowledge for developing soybean varieties for M. cribraria management"
Keywords:		Animals *Fabaceae *Hemiptera *Heteroptera Nymph Soybeans *Volatile Organic Compounds antibiosis antixenosis free amino acids volatile organic compounds;
Notes:		"MedlineLahiri, S Reisig, D D Dean, Lisa L Reay-Jones, F P F Greene, J K Carter, T E Mian, R Fallen, B D eng Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. England 2020/07/06 Environ Entomol. 2020 Aug 20; 49(4):876-885. doi: 10.1093/ee/nvaa075"