Atmospheric benzenoid emissions from plants rival those from fossil fuels.
Atmospheric benzenoid emissions from plants rival those from fossil fuels.
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DOI：
10.1038/srep12064
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发表时间：
2015-07-13
影响因子：
4.6
通讯作者：
Goldstein AH
中科院分区：
文献类型：
--
作者：
Misztal PK;Hewitt CN;Wildt J;Blande JD;Eller AS;Fares S;Gentner DR;Gilman JB;Graus M;Greenberg J;Guenther AB;Hansel A;Harley P;Huang M;Jardine K;Karl T;Kaser L;Keutsch FN;Kiendler-Scharr A;Kleist E;Lerner BM;Li T;Mak J;Nölscher AC;Schnitzhofer R;Sinha V;Thornton B;Warneke C;Wegener F;Werner C;Williams J;Worton DR;Yassaa N;Goldstein AH
尽管已知植物在生物化学上产生一系列芳香族化合物，并且在花香中存在苯类化合物，但据报道只有少数苯类化合物从生物圈排放到大气中。本文利用飞机、生态系统、树、枝和叶尺度测量的证据，以及互补的同位素标记实验，表明植被（叶、花和浮游植物）以相当大的速率向大气排放各种各样的苯类化合物。受控环境实验表明，在逆境条件下，植物能够改变其代谢，产生和释放许多苯类化合物。这些化合物的功能尚不清楚，但可能与化学通讯和保护应激有关。我们估计，来自生物源苯类化合物的全球次生有机气溶胶总量与来自人为苯类化合物（~10 Tg y−1）的总量相似，这表明这些自然排放在大气物理和化学中的重要性。
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.
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影响因子：
16.6
作者：
Erb, Matthias;Veyrat, Nathalie;Robert, Christelle A. M.;Xu, Hao;Frey, Monika;Ton, Jurriaan;Turlings, Ted C. J.
通讯作者：
Turlings, Ted C. J.
影响因子：
4.4
作者：
Heald, C. L.;Henze, D. K.;Fung, I.
通讯作者：
Fung, I.
影响因子：
6.3
作者：
Bouvier-Brown, N. C.;Goldstein, A. H.;Holzinger, R.
通讯作者：
Holzinger, R.
影响因子：
4
作者：
Hayward, S;Tani, A;Hewitt, CN
通讯作者：
Hewitt, CN
影响因子：
5.2
作者：
Griffin, RJ;Cocker, DR;Dabdub, D
通讯作者：
Dabdub, D