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한국생태학회 / v.27, no.2, 2004년, pp.107-114 
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( Cadmium-Induced Phytotoxicity in Tomato Seedlings Due to the Accumulation of H2O2 That Results from the Reduced Activities of H2O2 Detoxifying Enzymes ) |
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| 초 록 |
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| Tomato (Lycopersicon esculentum) seedlings exposed to various concentrations of $CdC1_2$ (0∼100 $mu$M) in the nutrient solution for up to 9 days were analyzed with the seedling growth, $H_2O_2$ production, glutathione levels and activity changes of enzymes related to $H_2O_2$ removal. The growth of seedlings was inhibited with over 50 $mu$M Cd, whereas the levels of $H_2O_2$ and glutathione were enhanced with Cd exposure level and time. Meanwhile, Cd exposure increased the activities of catalase (CAT) and glutathione reductase (GR) but decreased the activities of dehydroascorbate acid reductase (DHAR) and ascorbate peroxidase (APX) in both leaves and roots. These results suggest that the altered activities of antioxidant enzymes particularly involved in the $H_2O_2$ removal and the subsequent $H_2O$$_2$ accumulation could induce the Cd-induced phytotoxicity. |
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| 키워드 |
| Cadmium;Hydrogen peroxide;Lycopersicon esculentum; |
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The Korean Journal of Ecology / v.27, no.2, 2004년, pp.107-114
한국생태학회
ISSN : 1225-0317
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200411922324115)
언어 : 영어 |
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| 논문 제공 : KISTI 한국과학기술정보연구원 |
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