BVOC responses to realistic nitrogen fertilization and ozone exposure in silver birch

Environmental Pollution
G CarrieroE Paoletti

Abstract

Emission of BVOC (Biogenic Volatile Organic Compounds) from plant leaves in response to ozone exposure (O3) and nitrogen (N) fertilization is poorly understood. For the first time, BVOC emissions were explored in a forest tree species (silver birch, Betula pendula) exposed for two years to realistic levels of O3 (35, 48 and 69 ppb as daylight average) and N (10, 30 and 70 kg ha(-1) yr(-1), applied weekly to the soil as ammonium nitrate). The main BVOCs emitted were: α-pinene, β-pinene, limonene, ocimene, (E)-4,8-dimethyl-1,3,7-nonatriene (DMNT) and hexanal. Ozone exposure increased BVOC emission and reduced total leaf area. The effect on emission was stronger when a short-term O3 metric (concentrations at the time of sampling) rather than a long-term one (AOT40) was used. The effect of O3 on total leaf area was not able to compensate for the stimulation of emission, so that responses to O3 at leaf and whole-plant level were similar. Nitrogen fertilization increased total leaf area, decreased α-pinene and β-pinene emission, and increased ocimene, hexanal and DMNT emission. The increase of leaf area changed the significance of the emission response to N fertilization for most compounds. Nitrogen fertilization mitigated the effect...Continue Reading

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Citations

Jul 15, 2016·Plant, Cell & Environment·Xiangyang YuanZhaozhong Feng
May 30, 2017·The Science of the Total Environment·Xiangyang YuanElena Paoletti
Jan 5, 2018·Journal of Experimental Botany·Arooran KanagendranÜlo Niinemets
Oct 20, 2018·Frontiers in Plant Science·Jarmo K HolopainenMinna Kivimäenpää
Dec 21, 2016·Environmental Science and Pollution Research International·Lorenzo CotrozziElena Paoletti
Dec 2, 2020·Environmental Pollution·Yasutomo HoshikaElena Paoletti
Apr 24, 2020·MethodsX·Kolby J JardineLuani Rosa de Oliveira Piva
Feb 14, 2021·Environmental Research·Elena PaolettiHeinz Rennenberg
Apr 18, 2018·Environmental Pollution·Evgenios AgathokleousEdward J Calabrese
May 18, 2021·The Science of the Total Environment·Weizhen YangLingyu Li
Oct 17, 2021·The Science of the Total Environment·Shuangjiang LiElena Paoletti
Jun 21, 2020·Ecotoxicology and Environmental Safety·Shuqing WuYanling Wang

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