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ACOMS+ 및 학술지 리포지터리 설명회

  • 한국과학기술정보연구원(KISTI) 서울분원 대회의실(별관 3층)
  • 2024년 07월 03일(수) 13:30
 

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  • ENGLISH
  • P-ISSN2287-8327
  • E-ISSN2288-1220
  • SCOPUS, KCI

Cadmium-Induced Phytotoxicity in Tomato Seedlings Due to the Accumulation of H2O2 That Results from the Reduced Activities of H2O2 Detoxifying Enzymes

Journal of Ecology and Environment / Journal of Ecology and Environment, (P)2287-8327; (E)2288-1220
2004, v.27 no.2, pp.107-114
조운행 (창원대학교)

Abstract

Tomato (Lycopersicon esculentum) seedlings exposed to various concentrations of CdCl2 (0-100μM) in the nutrient solution for up to 9 days were analyzed with the seedling growth, H2O2 production, glutathione levels and activity changes of enzymes related to H2O2 removal. The growth of seedlings was inhibited with over 50 μM Cd, whereas the levels of H2O2 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 H2O2 removal and the subsequent H2O2 accumulation could induce the Cd-induced phytotoxicity.

keywords
Cadmium, Hydrogen peroxide, Lycopersicon esculentum

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Journal of Ecology and Environment