Effects of ozone-induced stomatal closure on ozone uptake and its changes due to leaf age in sun and shade leaves of Siebold's beech

• HOSHIKA Yasutomo

  Silviculture and Forest Ecological Studies, Hokkaido University Institute of Sustainable Plant Protection, National Research Council of Italy

• WATANABE Makoto

  Institute of Agriculture, Tokyo University of Agriculture and Technology

• INADA Naoki

  Silviculture and Forest Ecological Studies, Hokkaido University

• KOIKE Takayoshi

  Silviculture and Forest Ecological Studies, Hokkaido University

抄録

An estimation of stomatal ozone uptake for the assessment of ozone risks in forest trees can be modified by ozone-induced stomatal closure. We thus examined a seasonal course of stomatal conductance in sun and shade leaves of Siebold's beech native to northern Japan (Fagus crenata) grown under free-air ozone exposure. A performance of multiplicative stomatal conductance model was also tested, when considering ozone-induced stomatal closure into the model. Ozone caused stomatal closure in both sun and shade leaves (20% and 30-40% reduction of stomatal conductance in sun and shade leaves, respectively) during early summer. However, in autumn, stomatal closure was diminished regardless of canopy positions (approximately 7% and 6% reduction of stomatal conductance in sun and shade leaves, respectively). When observed seasonal course of stomatal closure was taken into account in stomatal conductance model, the model provided a good agreement with measurements even under conditions of elevated ozone. As a result, ozone-induced stomatal closure limited stomatal ozone uptake by 11% and 17% in sun and shade leaves of Siebold's beech, respectively. In addition, stomatal ozone uptake in shade leaves under elevated ozone was much less than that in sun leaves (35% of the value in sun leaves), indicating better avoidance of ozone stress in shade leaves. Our results suggest that a loss of ozone-induced stomatal closure after ozone exposure in the late growing season should be considered in modeling stomatal ozone uptake for the assessment of ozone impacts on Siebold's beech.

収録刊行物

• 農業気象

  農業気象 71 (3), 218-226, 2015

  日本農業気象学会

キーワード

• Free-air ozone exposure
• Siebold's beech
• Stomatal conductance model
• Stomatal ozone uptake
• Sun and shade leaves

詳細情報

• CRID: 1390001204668951552
• NII論文ID: 120005670595
• NII論文ID: 130005098164
• NII書誌ID: AN00200732
• DOI: 10.2480/agrmet.d-14-00013
• ISSN: 18810136
• ISSN: 00218588
• HANDLE: 2115/60222
• NDL書誌ID: 026735844
• Web Site: http://id.ndl.go.jp/bib/026735844
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I026735844
• Web Site: https://www.jstage.jst.go.jp/article/agrmet/71/3/71_D-14-00013/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • IRDB
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可