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DOI	10.5194/acp-19-3125-2019
	A mechanism for biogenic production and emission of MEK from MVK decoupled from isoprene biosynthesis
	Cappellin L.; Loreto F.; Biasioli F.; Pastore P.; McKinney K.
发表日期	2019
ISSN	16807316
起始页码	3125
结束页码	3135
卷号	19 期号:5
英文摘要	Methyl ethyl ketone (MEK) is an important compound in atmospheric chemistry. While attention has been paid mostly to anthropogenic sources of MEK, recently it has been shown that biogenic sources are globally as important as anthropogenic ones. However, the origin of biogenic MEK has yet to be completely elucidated. We present the full mechanism by which within-plant transformation of methyl vinyl ketone (MVK) and, to a minor extent, of 2-butanol and 3-buten-2-ol, is a source of biogenic MEK. Such transformation is observed in red oak for both exogenous MVK, taken up from the atmosphere, and endogenous MVK generated within a plant when it experiences stress (e.g. heat stress). Endogenous MVK emitted by plants is typically explained by within-plant oxidation of isoprene caused by oxidative stress. In this study we show that MVK and MEK emissions caused by heat stress are not related to isoprene in isoprene-emitting plants, implying that the massive carbon investment that plants commit to isoprene production is not explained by a direct antioxidant role. The presented mechanism can be important for inclusion in plant emission and in plant-atmosphere interaction models. © 2019 Author(s).
语种	英语
scopus关键词	anthropogenic source; atmospheric chemistry; biogenic emission; isoprene; organic compound; oxidation; oxidative stress; Quercus rubra
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/144579
作者单位	Research and Innovation Centre, Fondazione Edmund Mach, S. Michele a/A, 38010, Italy; Dipartimento di Scienze Chimiche, Università degli Studi di Padova, Padova, Italy; Consiglio Nazionale Delle Ricerche (CNR), Dipartimento di Scienze Bio-Agroalimentari (DISBA), Roma, 7-00185, Italy; Dipartimento di Biologia, Università degli Studi di Napoli Federico II, Napoli, Italy; Colby College, Waterville, ME, United States
推荐引用方式 GB/T 7714	Cappellin L.,Loreto F.,Biasioli F.,et al. A mechanism for biogenic production and emission of MEK from MVK decoupled from isoprene biosynthesis[J],2019,19(5).
APA	Cappellin L.,Loreto F.,Biasioli F.,Pastore P.,&McKinney K..(2019).A mechanism for biogenic production and emission of MEK from MVK decoupled from isoprene biosynthesis.Atmospheric Chemistry and Physics,19(5).
MLA	Cappellin L.,et al."A mechanism for biogenic production and emission of MEK from MVK decoupled from isoprene biosynthesis".Atmospheric Chemistry and Physics 19.5(2019).