Plant biochemistry influences tropospheric ozone formation, destruction, deposition, and response

Jessica M. Wedow, Elizabeth A. Ainsworth, Shuai Li

Research output: Contribution to journalReview articlepeer-review


Tropospheric ozone (O3) is among the most damaging air pollutant to plants. Plants alter the atmospheric O3 concentration in two distinct ways: (i) by the emission of volatile organic compounds (VOCs) that are precursors of O3; and (ii) by dry deposition, which includes diffusion of O3 into vegetation through stomata and destruction by nonstomatal pathways. Isoprene, monoterpenes, and higher terpenoids are emitted by plants in quantities that alter tropospheric O3. Deposition of O3 into vegetation is related to stomatal conductance, leaf structural traits, and the detoxification capacity of the apoplast. The biochemical fate of O3 once it enters leaves and reacts with aqueous surfaces is largely unknown, but new techniques for the tracking and identification of initial products have the potential to open the black box.

Original languageEnglish (US)
Pages (from-to)992-1002
Number of pages11
JournalTrends in Biochemical Sciences
Issue number12
StatePublished - Dec 2021


  • antioxidant
  • biogenic volatile organic compounds
  • glandular trichomes
  • ozone
  • reactive oxygen species
  • stomata

ASJC Scopus subject areas

  • Molecular Biology
  • Biochemistry


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