Journal of Korean Society of Forest Science (한국산림과학회지)

Korean Society of Forest Science (한국산림과학회)
권호 표지

Antioxidant Enzyme, Chlorophyll Contents and Stomatal Changes of Five Tree Species under Ozone Stress

저농도 오존처리에 따른 다섯 가지 유묘의 기공 변화, 엽록소 함량 및 항산화 효소 활성

  • Ryang, Soo Zin (Department of Environmental Horticulture, University of Seoul) ;
  • Woo, Su Young (Department of Environmental Horticulture, University of Seoul) ;
  • Je, Sun Mi (Department of Forest Environment, Korea Forest Research Institute)
  • 양수진 (서울시립대학교 환경원에학과) ;
  • 우수영 (서울시립대학교 환경원에학과) ;
  • 제선미 (국립산림과학원 산림환경부)
  • Received : 2007.08.03
  • Accepted : 2007.08.22
  • Published : 2007.09.30
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Abstract

This study is conducted to identify responses of plants to low $O_3$ concentration, Five species, Liriodendron tulipifera, Cornus officinalis, Ginkgoba biloba, Zelkova serrata, and Acer palmatum, were exposed to low ozone concentration from June 9 to July 8 in the phytotron, We measured chlorophyll contents, leaf diffusion resistance, leaf transpiration, and antioxidant enzyme activities; ascorbate peroxidase(APX), Especially, Liriodendron tulipifera and Cornus officinalis showed sensitive responses to ozone treatment as visible injuries, while other four species relatively showed tolerant responses. However, we noticed that almost all species under ozone treatment were lower physiological activities such as chlorophyll contents, leaf diffusion resistance, leaf transpiration, and antioxidant enzyme activities with time even without any visible injury.

튜립나무, 산수유, 은행나무, 느티나무, 단풍나무 등, 총 다섯 수종을 대상으로 phytotron에서 저농도 오존을 처리한 후 이에 따른 식물의 반응을 고찰하였다. 엽록소함량, 잎 기공저항, 잎 증산량, 항산화효소인 APX(Ascorbate peroxidase)를 통해 분석하였고, 이에 따른 결과는 수종마다 각기 다르게 나타났다. 본 실험기간동안 가시피해현상이 나타난 수종은 튜립나무와 산수유 뿐이었지만 가시피해현상이 없는 수종도 포함, 전 수종이 저농도 오존에 의해 엽록소함량, 기공저항, 기공전도도, 항산화효소 활성에서 낮은 생리적 활성을 보임을 확인할 수 있었다.

Keywords

Acknowledgement

Supported by : 서울시, 한국학술진흥재단

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