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Effects of Simulated Acid Rain on Growth and Antioxidant System in French Marigold (Tagetes patula L.)

인공산성비가 만수국(Tagetes patula L.)의 생육 및 항산화 작용에 미치는 영향

  • Kim, Hak-Yoon (Faculty of Environmental Studies, Keimyung University) ;
  • Kim, Jeung-Bea (Faculty of Environmental Studies, Keimyung University)
  • Published : 2005.06.30

Abstract

This study was conducted to investigate the effect of simulated acid rain (SAR) on growth and antioxidant system in french marigold (Tagetes patula L.). Plants were subjected to four levels of SAR (pH 5.6, 4.0, 3.0, 2.0) in the growth chambers for 2 weeks. SAR decreased both plant height and plant dry weight of french marigold. As the pH levels decreased from 5.6 to 2.0, the content of MDA highly increased linearly. The ratios of dehydroascorbate/ascorbate and oxidized glutathione/reduced glutathione were significantly increased with decreasing pH levels. The enzyme (superoxide dismutase, ascorbate peroxidase etc.) activities of the plant affected by SAR were increased as the pH decreased. Based on the results, SAR caused oxidative stress in french marigold and resulted in significant reduction in plant growth. Biochemical protection responses might be activated to prevent the plant from damaging effects of oxidative stress generated in SAR.

Keywords

antioxidant system;growth;french marigold;simulated acid rain

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