DOI: 10.1016/j.atmosenv.2017.12.020
Scopus记录号: 2-s2.0-85038883530
论文题名: Biogenic volatile organic compound emissions from senescent maize leaves and a comparison with other leaf developmental stages
作者: Mozaffar A ; , Schoon N ; , Bachy A ; , Digrado A ; , Heinesch B ; , Aubinet M ; , Fauconnier M ; -L ; , Delaplace P ; , du Jardin P ; , Amelynck C
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2018
卷: 176 起始页码: 71
结束页码: 81
语种: 英语
英文关键词: BVOC
; GLV
; Leaf senescence
; Maize
; Methanol
; PTR-MS
Scopus关键词: Acetone
; Atmospheric chemistry
; Atmospheric composition
; Crops
; Cultivation
; Grain (agricultural product)
; Mass spectrometry
; Methanol
; Organic compounds
; Proton transfer
; Volatile organic compounds
; Biogenic volatile organic compounds
; BVOC
; Emission measurement
; Environmental conditions
; Leaf senescence
; Maize
; Proton-transfer reaction mass spectrometries
; PTR-MS
; Plants (botany)
; acetaldehyde
; acetic acid
; acetone
; hexobarbital
; methanol
; propionaldehyde
; terpene
; volatile organic compound
; acetaldehyde
; acetic acid
; atmospheric chemistry
; biogenic emission
; cereal
; developmental stage
; environmental conditions
; maize
; methanol
; senescence
; volatile organic compound
; Article
; chlorosis
; degeneration
; leaf development
; leaf senescence
; maize
; mass spectrometry
; maturation
; nonhuman
; plant growth
; plant leaf
; Poaceae
; priority journal
; proton transfer reaction mass spectrometry
; Giardia lamblia virus
; Poaceae
; Zea mays
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: Plants are the major source of Biogenic Volatile Organic Compounds (BVOCs) which have a large influence on atmospheric chemistry and the climate system. Therefore, understanding of BVOC emissions from all abundant plant species at all developmental stages is very important. Nevertheless, investigations on BVOC emissions from even the most widespread agricultural crop species are rare and mainly confined to the healthy green leaves. Senescent leaves of grain crop species could be an important source of BVOCs as almost all the leaves senesce on the field before being harvested. For these reasons, BVOC emission measurements have been performed on maize (Zea mays L.), one of the most cultivated crop species in the world, at all the leaf developmental stages. The measurements were performed in controlled environmental conditions using dynamic enclosures and proton transfer reaction mass spectrometry (PTR-MS). The main compounds emitted by senescent maize leaves were methanol (31% of the total cumulative BVOC emission on a mass of compound basis) and acetic acid (30%), followed by acetaldehyde (11%), hexenals (9%) and m/z 59 compounds (acetone/propanal) (7%). Important differences were observed in the temporal emission profiles of the compounds, and both yellow leaves during chlorosis and dry brown leaves after chlorosis were identified as important senescence-related BVOC sources. Total cumulative BVOC emissions from senescent maize leaves were found to be among the highest for senescent Poaceae plant species. BVOC emission rates varied strongly among the different leaf developmental stages, and senescent leaves showed a larger diversity of emitted compounds than leaves at earlier stages. Methanol was the compound with the highest emissions for all the leaf developmental stages and the contribution from the young-growing, mature, and senescent stages to the total methanol emission by a typical maize leaf was 61, 13, and 26%, respectively. This study shows that BVOC emissions from senescent maize leaves cannot be neglected and further investigations in field conditions are recommended to further constrain the BVOC emissions from this important C4 crop species. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83056
Appears in Collections: 气候变化事实与影响
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作者单位: TERRA Research Center, University of Liege, Gembloux Agro-Bio Tech, 8 Avenue de la Faculté, Gembloux, Belgium; Royal Belgian Institute for Space Aeronomy, Ringlaan 3, Brussels, Belgium; Plant Biology Laboratory, AGRO-BIO-CHEM Research Unit, University of Liege, Gembloux Agro-Bio Tech, 2 Passage des Déportés, Gembloux, Belgium; Department of Analytical Chemistry, Ghent University, Krijgslaan 281-S12, Ghent, Belgium
Recommended Citation:
Mozaffar A,, Schoon N,, Bachy A,et al. Biogenic volatile organic compound emissions from senescent maize leaves and a comparison with other leaf developmental stages[J]. Atmospheric Environment,2018-01-01,176