Title page for etd-0711106-145954


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URN etd-0711106-145954
Author Nan-ying Chen
Author's Email Address No Public.
Statistics This thesis had been viewed 4660 times. Download 3595 times.
Department Biological Sciences
Year 2005
Semester 2
Degree Master
Type of Document
Language English
Title Effect of Cadmium on Peroxidase Isozyme in
two Rice Cultivars
Date of Defense 2006-05-15
Page Count 58
Keyword
  • peroxidase
  • cadmium
  • lignin
  • hydrogen peroxide
  • Oryza sativa
  • Abstract Cadmium-treated rice seeding (Oryza sativa L. cv. Taichung Native 1 and O. sativa L. cv. Tainung 67) showed inhibition in the growth of rice roots or leaves, and an enhancement in POX activity. In Tainung 67 cultivar, Cd treatment may have influence over cis-regulatory elements in POX promoter region and enhanced transcription of POX or enhance glycosylation of POX. The increase in POX activity induced by Cd might remove excess hydrogen peroxide serving a detoxifying role and synthesizing more lignin for protection. In Taichung Native 1 cultivar, high amounts of H2O2 accumulated in Cd-treated tissues could be due to the less amounts of POX induced by Cd. In response to Cd treatment, the Taichung Native 1 cultivar also synthesizes a little lignin, and is more Cd-sensitive. Therefore, the Tainung 67 cultivar is more tolerant to Cd than Taichung Native 1.
    Advisory Committee
  • Ching-mei Hsu - chair
  • Hao-Jen Huang - co-chair
  • Zin-huang Liu - advisor
  • Files
  • etd-0711106-145954.pdf
  • indicate access worldwide
    Date of Submission 2006-07-11

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