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한국생태학회 / v.29, no.1, 2006년, pp.61-67 
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( Changes of Thiols and Oxidative Stress in Tomato Seedlings Exposed to Cadmium ) |
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| 초 록 |
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| Tomato (Lycopersicon esculentum Mill) seedlings exposed to various concentrations of $CdCl_2(0{sim}100{mu}M)$ in a nutrient solution for up to 9 days were analyzed with respect to the thiol changes and oxidative stress. The Cd exposure increased total non-protein thiols (NPT) and cysteine in both leaves and roots, total glutathione in leaves, and the ratios of oxidized glutathione (GSSG)/reduced glutathione (GSH) in both leaves and roots, but decreased the ratio of dehydroascorbate (DASA)/ascorbate(ASA) in leaves. Our results suggest that the Cd-induced GSH depletion due to thiol synthesis and oxidation alters the antioxidant activity of seedlings for $H_2O_2$, and the subsequent $H_2O_2$ accumulationand oxidative stress result in phytotoxicity.저 |
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| 키워드 |
| Cadmium;Oxidative stress;Thiols;Tomato; |
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Journal of Ecology and Field Biology / v.29, no.1, 2006년, pp.61-67
한국생태학회
ISSN : 1975-020X
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200626813143646)
언어 : 영어 |
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| 논문 제공 : KISTI 한국과학기술정보연구원 |
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