Effect of Cadmium on Peroxidase Isozyme in Arabidopsis thaliana Roots

• Main Authors: Mao-yi Lin, 林茂益
• Other Authors: Zin-huang Liu
• Format: Others
• Language: en_US
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/12055435462702406159

碩士 === 國立中山大學 === 生物科學系研究所 === 94 === The adverse effect of Cd on growth is apparent from the reduction in root length of the Cd-treated Arabidopsis thaliana roots. The increase of the levels of H2O2 was observed in Cd-treated A. thaliana roots. The lignin biosynthesis related enzymes, POXs and laccases were enhanced during the Cd treatments. The lignin contents slightly increased in Cd-treated A. thaliana roots（48 h）. The A. thaliana can be tolerant to high concentration of Cd (500 µM), and only part of high levels of H2O2 accumulated in Cd-treated tissues are used by POXs to synthesize the lignin.