Arabidopsis thaliana expresses a second functional phytochelatin synthase

FEBS Letters

Clemens, Stephan¹  Cazalé, Anne-Claire¹ 

[1] Leibniz Institute of Plant Biochemistry, Weinberg 3, D-06120 Halle (Saale), Germany

关键词: Heavy metal tolerance;    Metal chelator;    Metal homeostasis;    PC;    phytochelatin;    PCS;    phytochelatin synthase;   

DOI  :  10.1016/S0014-5793(01)02976-3

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

Phytochelatins represent a major detoxifying pathway for heavy metals in plants and many other organisms. The Arabidopsis thaliana CAD1 (=AtPCS1) gene encodes a phytochelatin synthase and cad1 mutants are phytochelatin deficient and cadmium hypersensitive. The Arabidopsis genome contains a highly homologous gene, AtPCS2, of which expression and function were studied in order to understand the apparent non-redundancy of the two genes. Low constitutive AtPCS2 expression is detected in all plant organs analyzed. The AtPCS2 gene encodes a functional phytochelatin synthase as shown by expression in Saccharomyces cerevisiae and the complementation of a Schizosaccharomyces pombe phytochelatin synthase knockout strain.

【 授权许可】

Unknown