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Impacts of Drought and Rehydration Cycles on Isoprene Emissions in Populus nigra Seedlings

Author

Listed:
  • Zhiyu Han

    (School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, China)

  • Yisheng Zhang

    (School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, China
    Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Guangzhou 511486, China)

  • Houyong Zhang

    (Jinan Ecology and Environment Monitoring Center of Shandong Province, Jinan 250101, China)

  • Xuan Ge

    (Jinan Ecology and Environment Monitoring Center of Shandong Province, Jinan 250101, China)

  • Dasa Gu

    (Division of Environment and Sustainability, The Hong Kong University of Science and Technology, Hong Kong 999077, China)

  • Xiaohuan Liu

    (Key Lab of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, China)

  • Jianhui Bai

    (LAGEO, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China)

  • Zizhen Ma

    (School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, China)

  • Yan Tan

    (School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, China)

  • Feng Zhu

    (Hebei Key Laboratory of Soil Ecology, Key Laboratory of Agricultural Water Resources, Center for Agricultural Resources Research, Institute of Genetic and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang 050022, China)

  • Shiyong Xia

    (School of Environment and Energy, Peking University, Shenzhen 518055, China)

  • Jinhua Du

    (School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, China)

  • Yuran Tan

    (School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, China)

  • Xiao Shu

    (School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, China)

  • Jingchao Tang

    (School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, China)

  • Yingjie Sun

    (School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, China)

Abstract

The volatile organic compounds emitted by plants significantly impact the atmospheric environment. The impacts of drought stress on the biogenic volatile organic compound (BVOC) emissions of plants are still under debate. In this study, the effects of two drought–rehydration cycle groups with different durations on isoprene emissions from Populus nigra (black poplar) seedlings were studied. The P. nigra seedlings were placed in a chamber that controlled the soil water content, radiation, and temperature. The daily emissions of isoprene and physiological parameters were measured. The emission rates of isoprene ( F iso ) reached the maximum on the third day (D3), increasing by 58.0% and 64.2% compared with the controlled groups, respectively, and then F iso significantly decreased. Photosynthesis decreased by 34.2% and 21.6% in D3 in the first and second groups, respectively. After rehydration, F iso and photosynthesis recovered fully in two groups. However, F iso showed distinct inconsistencies in two groups, and the recovery rates of F iso in the second drought group were slower than the recovery rates of F iso in the first groups. The response of BVOC emissions during the drought-rehydration cycle was classified into three phases, including stimulated, inhibited, and restored after rehydration. The emission pattern of isoprene indicated that isoprene played an important role in the response of plants to drought stress. A drought–rehydration model was constructed, which indicated the regularity of BVOC emissions in the drought–rehydration cycle. BVOC emissions were extremely sensitive to drought, especially during droughts of short duration. Parameters in computational models related to BVOC emissions of plants under drought stress should be continuously improved.

Suggested Citation

  • Zhiyu Han & Yisheng Zhang & Houyong Zhang & Xuan Ge & Dasa Gu & Xiaohuan Liu & Jianhui Bai & Zizhen Ma & Yan Tan & Feng Zhu & Shiyong Xia & Jinhua Du & Yuran Tan & Xiao Shu & Jingchao Tang & Yingjie S, 2022. "Impacts of Drought and Rehydration Cycles on Isoprene Emissions in Populus nigra Seedlings," IJERPH, MDPI, vol. 19(21), pages 1-13, November.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:21:p:14528-:d:964299
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    References listed on IDEAS

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    1. J. Lelieveld & T. M. Butler & J. N. Crowley & T. J. Dillon & H. Fischer & L. Ganzeveld & H. Harder & M. G. Lawrence & M. Martinez & D. Taraborrelli & J. Williams, 2008. "Atmospheric oxidation capacity sustained by a tropical forest," Nature, Nature, vol. 452(7188), pages 737-740, April.
    2. Kelley C. Wells & Dylan B. Millet & Vivienne H. Payne & M. Julian Deventer & Kelvin H. Bates & Joost A. Gouw & Martin Graus & Carsten Warneke & Armin Wisthaler & Jose D. Fuentes, 2020. "Satellite isoprene retrievals constrain emissions and atmospheric oxidation," Nature, Nature, vol. 585(7824), pages 225-233, September.
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