Effects of Ozone and Soil Water Stress, Singly and in Combination, on Leaf Antioxidative Systems of Fagus crenata Seedlings

• WAITANABE Makoto

  United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology

• YONEKURA Tetsushi

  Center for Environmental Science in Saitama

• HONDA Yukie

  United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology

• YOSHIDOME Masatoshi

  United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology

• NAKAJI Tatsuro

  Center for Global Environmental Research, National Institute for Environmental Studies

• IZUTA Takeshi

  Institute of Symbiotic Science and Technology, Tokyo University of Agriculture and Technology

書誌事項

タイトル別名

• Effects of Ozone and Soil Water Stress, Singly and in Combination, on Leaf Antioxidative Systems of <i>Fagus crenata</i> Seedlings

抄録

The effects of O₃ and /or chronic mild water stress on photosynthetic characteristics and leaf antioxidative systems of Fagus crenata seedlings were investigated. The seedlings were exposed to charcoal-filtered air or 60 nmol mol^-1 O₃ for two growing seasons. In each gas treatment, the seedlings were received 250 ml (well-watered) or 175 ml (water-stressed) of water at 3-day intervals during the growth period. The O₃ significantly reduced net photosynthetic rate, Rubisco concentration and chlorophyll concentration without stomatal closure, and significantly increased ascorbate concentration in the leaves of the seedlings. On the other hand, the water stress significantly reduced net photosynthetic rate and stomatal diffusive conductance to water vapor without significant reductions in the concentrations of Rubisco and chlorophyll, and significantly increased glutathione concentration in the leaves of the seedlings. Significant antagonistic effects of O₃ and water stress were detected on net photosynthetic rate of the seedlings in September and October. In conclusion, because chronic mild water stress induces not only stomatal closure, but also increase of leaf glutathione concentration, the extent of the negative effects of O₃ on net photosynthesis of Fagus crenata is less under the water-stressed condition than under the well-watered condition.

収録刊行物

• 農業気象

  農業気象 60 (6), 1105-1108, 2005

  日本農業気象学会

キーワード

• Antioxidants
• <i>Fagus crenata</i>
• Ozone
• Water stress

詳細情報

• CRID: 1390282679645359104
• NII論文ID: 130006847420
• NII論文ID: 40006987190
• NII書誌ID: AA11530034
• DOI: 10.2480/agrmet.1105
• ISSN: 18810136
• ISSN: 00218588
• NDL書誌ID: 7697907
• Web Site: http://id.ndl.go.jp/bib/7697907
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7697907
• Web Site: https://www.jstage.jst.go.jp/article/agrmet/60/6/60_1105/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可