Analysis of the Transport System of Cadmium and the Change of Proline Content in Spring Radish Young Plant

봄무우 유식물에서 카드뮴 운반계와 Proline 농도 변화의 분석

  • 박선영 (건국대학교 이과대학 화학과) ;
  • 박면용 (건국대학교 이과대학 화학과) ;
  • 조봉희 (수원대학교 자연과학대학 생물학과)
  • Received : 1996.02.15
  • Published : 1996.06.25

Abstract

Cadmium was transported through the special carrier system into the cells of cotyledons, hypocotyls, and roots spring radish young plants. The transport of cadmium was inhibited by metabolic inhibitor, like DNP. The $K_m$ values for cadmium were 0.7 ppm for cotyledons, 1.72 ppm for hypocotyls, and 0.3 ppm for roots, and $V_{max}$ for cadmium was $40ppm{\cdot}h^{-1}{\cdot}g{\cdot}fresh\;weight^{-1}$ for cotyledons, $313ppm{\cdot}h^{-1}{\cdot}g{\cdot}fresh\;weight^{-1}$ for hypocotyls, and $606ppm{\cdot}h^{-1}{\cdot}g{\cdot}fresh\;weight^{-1}$ for roots. Cadmium cannot prove to be inducer for proline accumulation. Therefore, proline accumulation cannot be used as a marker to test the level of heavy metal pollution.

Acknowledgement

Supported by : 교육부 기초과학연구소