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United States Department of Agriculture

Agricultural Research Service

Related Topics

Wai Gee
Foodborne Toxin Detection and Prevention Research
Biological Science Technician

Phone: (510) 559-6459
Fax: (510) 559-5777

USDA, ARS, PWA, WRRC-FTDP
800 BUCHANAN STREET
ALBANY , CA 94710


Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Plant-microbe relationship that influences an insect pest of Califronia tree nuts -
In-field volatile collection and analysis method utilizing a portable GC-MS: in situ headspace analysis of intact and damaged yellow starthistle flower heads Reprint Icon -
Beck, J.J., Porter, N., Cook, D., Griffith, C., Gee, W.S., Rands, A.D., Truong, T.V., Smith, L., San Roman, I. 2015. In-field volatile collection and analysis method utilizing a portable GC-MS: in situ headspace analysis of intact and damaged yellow starthistle flower heads. Phytochemical Analysis. 26:395-403.
Comparison of ex-situ volatile emissions from intact and mechanically damaged walnuts Reprint Icon -
San Roman, I., Bartolome, L., Gee, W.S., Beck, J.J., Alonso, R.M. 2015. Comparison of ex-situ volatile emissions from intact and mechanically damaged walnuts. Food Research International. 72:198-207.
Electrophysiological responses of male and female Amyelois transitella antennae to pistachio and almond host plant volatiles -
Beck, J.J., Light, D.M., Gee, W.S. 2014. Electrophysiological responses of male and female Amyelois transitella antennae to pistachio and almond host plant volatiles. Entomologia Experimentalis et Applicata. 153(3):217-230. doi: 10.111/EEA.12243.
Semiochemicals to monitor insect pests – future opportunities for an effective host plant volatile blend to attract navel orangeworm in pistachio orchards -
Beck, J.J., Mahoney, N.E., Gee, W.S., Higbee, B.S., Baig, N., Griffith, C.M. 2014. Semiochemicals to monitor insect pests – future opportunities for an effective host plant volatile blend to attract navel orangeworm in pistachio orchards. American Chemical Society. p. 191-210. doi: 10.1021/BK-2014-1172.CH014.
Comparison of the volatile emission profiles of ground almond and pistachio mummies: part 1 – addressing a gap in knowledge of current attractants of navel orangeworm -
Beck, J.J., Mahoney, N.E., Cook, D., Gee, W.S., Baig, N. 2014. Comparison of the volatile emission profiles of ground almond and pistachio mummies: part 1 – addressing a gap in knowledge of current attractants of navel orangeworm. Phytochemistry Letters. 9:102-106. DOI.10.1016/j.phytol.2014.04.010.
The major volatile compound 2-phenylethanol from the biocontrol yeast Pichia anomala inhibits growth and expression of aflatoxin biosynthetic genes of Aspergillus flavus Reprint Icon -
Hua, S.T., Beck, J.J., Sarreal, S.L., Gee, W.S. 2014. The major volatile compound 2-phenylethanol from the biocontrol yeast Pichia anomala inhibits growth and expression of aflatoxin biosynthetic genes of Aspergillus flavus. Mycotoxin Research. 30(2):71-78. doi: 10.1007/s12550-014-0189-Z.
Comparison of the volatile emission profiles of ground almond and pistachio mummies: part 2 - critical changes in emission profiles as a result of increasing the water activity -
Beck, J.J., Mahoney, N.E., Cook, D., Higbee, B.S., Light, D.M., Gee, W.S., Baig, N. 2014. Comparison of the volatile emission profiles of ground almond and pistachio mummies: part 2 - critical changes in emission profiles as a result of increasing the water activity. Phytochemistry Letters. 8:220-225. DOI: org/10.1016/j.phytol.2014.01.004.
Ex situ volatile survey of ground almond and pistachio hulls for emission of spiroketals: Analysis of hull fatty acid composition, water content, and water activity -
Mahoney, N.E., Gee, W.S., Higbee, B.S., Beck, J.J. 2013. Ex situ volatile survey of ground almond and pistachio hulls for emission of spiroketals: Analysis of hull fatty acid composition, water content, and water activity. Phytochemistry Letters. 7:225-230.
Headspace volatiles from 52 oak species advertise induction, species identity, and evolution, but not defense Reprint Icon -
Pearse, I.S., Gee, W.S., Beck, J.J. 2012. Headspace volatiles from 52 oak species advertise induction, species identity, and evolution, but not defense. Journal of Chemical Ecology. 39(1):90-100.
Generation of the volatile spiroketals conophthorin and chalcogran by fungal spores on polyunsaturated fatty acids common to almonds and pistachios Reprint Icon -
Beck, J.J., Mahoney, N.E., Gee, W.S., Cook, D. 2012. Generation of the volatile spiroketals conophthorin and chalcogran by fungal spores on polyunsaturated fatty acids common to almonds and pistachios. Journal of Agricultural and Food Chemistry. 60(48):11869-11876.
Hull split and damaged almond volatiles attract male and female navel orangeworm moths Reprint Icon -
Beck, J.J., Higbee, B.S., Gee, W.S., Merrill, G.B., Hayashi, J.M., Light, D.M. 2012. Hull split and damaged almond volatiles attract male and female navel orangeworm moths. Journal of Agricultural and Food Chemistry. 60(33):8090-8096.
Electroantennographic bioassay as a screening tool for host plant volatiles Reprint Icon -
Gee, W.S., Light, D.M., Beck, J.J. 2012. Electroantennogram bioassay as a screening tool for host plant volatiles. Journal of Visualized Experiments. 63:e3931.
Volatiles emissions from the flea beetle Altica litigata (Coleoptera: Chrysomelidae) associated with invasive Ludwigia hexapetala Reprint Icon -
Carruthers, R.I., Franc, M.K., Gee, W.S., Cosse, A.A., Grewell, B.J., Beck, J.J. 2011. Volatiles emissions from the flea beetle Altica litigata (Coleoptera: Chrysomelidae) associated with invasive Ludwigia hexapetala. Chemoecology. 21(4):253-259.
Volatile analysis of ground almonds contaminated with naturally occurring fungi Reprint Icon -
Beck, J.J., Mahoney, N.E., Cook, D., Gee, W.S. 2011. Volatile analysis of ground almonds contaminated with naturally occurring fungi. Journal of Agricultural and Food Chemistry. 59(11):6180-6187.
Ambient orchard volatiles from California almonds -
Beck, J.J., Higbee, B.S., Gee, W.S., Dragull, K.D. 2011. Ambient orchard volatiles from California almonds. Phytochemistry Letters. 4(2):199-202.
Non-pheromonal control of navel orangeworm as a promising method toward decreasing contamination of Aspergillus flavus in California tree nuts -
Beck, J.J., Light, D.M., Higbee, B.S., Dragull, K.D., Merrill, G.B., Gee, W.S. 2010. Non-pheromonal control of navel orangeworm as a promising method toward decreasing contamination of Aspergillus flavus in California tree nuts. American Chemical Society Abstracts.
Developing ambient almond orchard volatile mixtures for navel orangeworm (NOW) monitoring -
Beck, J.J., Higbee, B.S., Light, D.M., Dragull, K.D., Merrill, G.B., Gee, W.S. 2009. Developing ambient almond orchard volatile mixtures for navel orangeworm (NOW) monitoring. Almond Board of California.
Ambient almond volatiles from geographically different orchards and their relationship to navel orangeworm -
In situ volatiles from a single cultivar of Prunus dulcis and their relationship to navel orangeworm -
In Situ Seasonal Study of the Volatile Production of Almonds (Prunus dulcis), var. 'Nonpareil' and Relationship to Navel Orangeworm -
Beck, J.J., Merrill, G.B., Higbee, B.S., Light, D.M., Gee, W.S. 2009. In Situ Seasonal Study of the Volatile Production of Almonds (Prunus dulcis), var. 'Nonpareil' and Relationship to Navel Orangeworm. Journal of Agricultural and Food Chemistry. 57(9):3749-3753.
An in situ, seasonal study of volatiles from a single cultivar of Prunus dulcis, and their relationship to navel orangeworm moth -
Beck, J.J., Merrill, G.B., Gee, W.S., Higbee, B.S., Light, D.M. 2009. An in situ, seasonal study of volatiles from a single cultivar of Prunus dulcis, and their relationship to navel orangeworm moth. American Chemical Society National Meeting.
Developing Ambient Almond Orchard Volatile Mixtures for NOW Bioassay Analyses -
Beck, J.J., Merrill, G.B., Higbee, B.S., Light, D.M., Gee, W.S. 2008. Developing Ambient Almond Orchard Volatile Mixtures for NOW Bioassay Analyses. Almond Board of California.
Volatile Emission of Mechanically Damaged Almonds: An Old and New Method of Investigation to Determine Potential NOW Attractants -
Beck, J.J., Merrill, G.B., Higbee, B.S., Gee, W.S., Light, D.M., Roitman, J.N., Bettiga, J. 2007. Volatile Emission of Mechanically Damaged Almonds: An Old and New Method of Investigation to Determine Potential NOW Attractants. Multicrop Aflatoxin and Fumonisin Elimination and Fungal Genomics Workshop-The Peanut Foundation.
ARS News Articles
Last Modified: 5/2/2016
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