How Much Can Antioxidative Ascorbic Acid Located in the Leaf Apoplast (Cell Wall) Detoxify Ozone?—(I) A Simulation Model Based on Gas Diffusion Transfer Accompanied with Chemical Reaction—

DOI
  • Nouchi Isamu
    Formerly, National Institute for Agro-Environmental Sciences (Present: Institute for Agro-Environmental Sciences, National Agriculture and Food Research Organization) Formerly, Graduate School of Agricultural and Life Sciences, The University of Tokyo
  • Aoki Kazuyuki
    Formerly, Tokyo Metropolitan Research Institute for Environmental Protection, (Present: Tokyo Metropolitan Research Institute for Environmental Protection, Tokyo Environmental Public Service Crporation)
  • Kobayashi Kazuhiko
    Graduate School of Agricultural and Life Sciences, The University of Tokyo College of Agriculture, Ibaraki University

Bibliographic Information

Other Title
  • 葉アポプラスト（細胞壁）に存在する抗酸化性アスコルビン酸はオゾンをどこまで解毒できるのか？―(I) 化学反応を伴ったガス拡散移動に基づいたシミュレーションモデル―

Abstract

<p>Ground level ozone is a major threat to both agricultural crops and forest trees on a global scale. Ozone is absorbed by a plant through the stomata in the leaves, dissolves in the cell wall liquid, and reaches the cell membrane and cytosol, where it oxidizes various cellular components, thus exhibiting a toxicity to plant tissues. The cell wall (or apoplastic) liquid contains ascorbic acid (an aggregate of both neutral ascorbic acid without an electric charge and ionic ascorbate), which, as an antioxidant, serves as the first barrier against the oxidative ozone attack. Plöchl et al. (Planta, 210, 454–467 (2000)) proposed a mathematical model of the ozone detoxification by ascorbate (ASC-) located in the cell wall. Their model describes (1) diffusive transfer of ozone from the free air to cytosol and concomitant reactions in the apoplast; (2) regeneration of ASC- from dehydroascorbic acid (a product of ascorbic acid reacted with ozone) in the cytosol and replenishment to the apoplast; and (3) pH-dependent distribution of ASC- in sub-cellular components. We reviewed the mathematical formula proposed by Plöchl et al. (2000) and corrected some errors in the original paper.</p>

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Details 詳細情報について

  • CRID
    1390282763130849664
  • NII Article ID
    130007644215
  • DOI
    10.11298/taiki.54.113
  • ISSN
    21854335
    13414178
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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