title: A system and methodology for measuring volatile organic compounds produced by hydroponic lettuce in a controlled environment.
abstract: A system and methodology were developed for the nondestructive qualitative and quantitative analysis of volatile emissions from hydroponically grown 'Waldmann's Green' leaf lettuce (Lactuca sativa L.).  Photosynthetic photon flux (PPF), photoperiod, and temperature were automatically controlled and monitored in a growth chamber modified for the collection of plant volatiles.  The lipoxygenase pathway products (Z)-3-hexenal, (Z)-3-hexenol, and (Z)-3-hexenyl acetate were emitted by lettuce plants after the transition from the light period to the dark period.  The volatile collection system developed in this study enabled measurements of volatiles emitted by intact plants, from planting to harvest, under controlled environmental conditions.
authors.affiliation: Horticultural Sciences Department, University of Florida, Gainesville 32611, USA.
authors.forename: C S
authors.initials: CS
authors.lastname: Charron
authors.forename: D J
authors.initials: DJ
authors.lastname: Cantliffe
authors.forename: R M
authors.initials: RM
authors.lastname: Wheeler
authors.forename: A
authors.initials: A
authors.lastname: Manukian
authors.forename: R R
authors.initials: RR
authors.lastname: Heath
mesh_terms: D000388:Air / Q000032:analysis*; D000393:Air Pollutants / Q000032:analysis*; D018504:Ecological Systems, Closed; D004780:Environment, Controlled; D004784:Environmental Monitoring / Q000379:methods*; D008401:Gas Chromatography-Mass Spectrometry; D006838:Hydrocarbons / Q000032:analysis*; D018527:Hydroponics; D018545:Lactuca / Q000737:chemistry / Q000254:growth & development / Q000378:metabolism*; D008021:Life Support Systems / Q000295:instrumentation; D015227:Lipid Peroxidation; D008084:Lipoxygenase / Q000378:metabolism; D017440:Photoperiod; D014835:Volatilization
chemical_list: D000393:Air Pollutants; D006838:Hydrocarbons; D008084:Lipoxygenase