생명과학회지 (Journal of Life Science)

  • 제15권3호
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  • Pages.382-386
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  • 2005
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  • 1225-9918(pISSN)
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  • 2287-3406(eISSN)
한국생명과학회 (Korean Society of Life Science)
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봉선화(Impatiens balsamina L.)에 대한 pH 수준별 처리가 항산화 물질 및 관련 효소 활성에 미치는 영향

Effect of Simulated Acid Rain on Antioxidants and Related Enzymes in Garden Balsam (Impatiens balsamina L.)

  • Kim Hak Yoon (Faculty of Environmental Studies, Keimyung University)
  • 발행 : 2005.06.01
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초록

산성비가 식물 생장에 미치는 영향과 식물의 생화학적 방어반응을 조사하고자 봉선화를 이용하여 인공 산성비(pH 2.0, 3.0, 4.0, 5.6) 실험을 수행하였다. 산성비의 pH가 낮을수록 생육 피해는 심하게 나타났으며 pH 3.0 이하의 처리에 의해 잎에 암회색 또는 적갈색의 괴사반점이 생성되었다. MDA 함량은 pH 2.0 처리에서 약 $40\%$의 증가를 나타내었다. 산성비의 $H^+$ 부하량 증가에 따라 산화형인 DHA 및 GSSG의 함량이 증가하였다. 항산화효소인 SOD, APX, DHAR, GP등의 활성도 산성비의 $H^+$ 부하량의 증가에 따라 크게 증가하는 것으로 나타났다. 이상의 결과로 볼 때 산성비는 봉선화 식물에 활성산소 생성에 의한 산화스트레스를 일으키며, 이를 무독화하기 위해 식물의 생화학적 방어반응이 작용하는 것으로 사료된다

To investigate the effects of simulated acid rain (SAR) on growth and biochemical defense responses of plant, garden balsam (Impatiens balsamina L.) was subjected to four levels of SAR based on pH (5.6, 4.0, 3.0, 2.0) and placed in the growth chambers for 2 weeks. SAR drastically inhibited both height and dry weight of garden balsam. The content of total carotenoid was tended to decrease, but the level of malondialdehyde was significantly increased by SAR. As the pH levels decreased from 5.6 to 2.0, the content of dehydroascorbate and oxidized glutathione of the plant were significantly increased. The enzyme (superoxide dismutase, ascorbate peroxidase etc.) activities of the plant affected by SAR were increased as the pH decreased. The results indicate that garden balsam may receive oxidative stresses by the application of SAR and by which the plant growth can be significantly retarded. A biochemical protective mechanism might be activated to nullify the oxidative stresses generated through SAR.

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참고문헌

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피인용 문헌

  1. Effect of Simulated Acid Rain on Fatty Acid Composition and Antioxidant System in Garden Balsam(Impatiens balsamina L.) vol.31, pp.2, 2011, https://doi.org/10.5660/KJWS.2011.31.2.152