Atmospheric benzenoid emissions from plants rival those from fossil fuels
| Autor: | Brenda Thornton, David R. Worton, Einhard Kleist, Frank N. Keutsch, Allyson S. D. Eller, Silvano Fares, Tao Li, Jürgen Wildt, R. Schnitzhofer, Jonathan Williams, Frederik Wegener, Jessica B. Gilman, Peter Harley, Allen H. Goldstein, James D. Blande, Thomas Karl, Astrid Kiendler-Scharr, Kolby J. Jardine, Martin Graus, Armin Hansel, Pawel K. Misztal, John E. Mak, M. Huang, Noureddine Yassaa, Carsten Warneke, Jim Greenberg, Drew R. Gentner, Lisa Kaser, A. C. Nölscher, Vinayak Sinha, C. N. Hewitt, Christiane Werner, Brian M. Lerner, Alex Guenther |
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| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
0106 biological sciences
Atmospheric physics Fossil Fuels 010504 meteorology & atmospheric sciences Climate 01 natural sciences Article Trees Atmosphere Stress Physiological Botany Phytoplankton Ecosystem 0105 earth and related environmental sciences Volatile Organic Compounds Multidisciplinary business.industry Fossil fuel fungi Biosphere food and beverages Benzene Vegetation 13. Climate action Atmospheric chemistry Environmental chemistry ddc:000 Environmental science business 010606 plant biology & botany |
| Zdroj: | Misztal, PK; Hewitt, CN; Wildt, J; Blande, JD; Eller, ASD; Fares, S; et al.(2015). Atmospheric benzenoid emissions from plants rival those from fossil fuels. Scientific Reports, 5. doi: 10.1038/srep12064. UC Berkeley: Retrieved from: http://www.escholarship.org/uc/item/293623hr Scientific reports 5, 12064, 1-10 (2015). doi:10.1038/srep12064 Scientific Reports |
| Popis: | Despite the known biochemical production of a range of aromatic compounds by plants and the presence of benzenoids in floral scents, the emissions of only a few benzenoid compounds have been reported from the biosphere to the atmosphere. Here, using evidence from measurements at aircraft, ecosystem, tree, branch and leaf scales, with complementary isotopic labeling experiments, we show that vegetation (leaves, flowers and phytoplankton) emits a wide variety of benzenoid compounds to the atmosphere at substantial rates. Controlled environment experiments show that plants are able to alter their metabolism to produce and release many benzenoids under stress conditions. The functions of these compounds remain unclear but may be related to chemical communication and protection against stress. We estimate the total global secondary organic aerosol potential from biogenic benzenoids to be similar to that from anthropogenic benzenoids (~10 Tg y−1), pointing to the importance of these natural emissions in atmospheric physics and chemistry. |
| Databáze: | OpenAIRE |
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