| URN |
etd-0711106-145954 |
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| Author |
Nan-ying Chen |
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| Author's Email Address |
No Public. |
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| Statistics |
This thesis had been viewed 4660 times. Download 3436 times. |
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| Department |
Biological Sciences |
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| Year |
2005 |
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| Semester |
2 |
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| Degree |
Master |
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| Type of Document |
|
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| Language |
English |
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| Title |
Effect of Cadmium on Peroxidase Isozyme in
two Rice Cultivars |
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| Date of Defense |
2006-05-15 |
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| Page Count |
58 |
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| Keyword |
peroxidase
cadmium
lignin
hydrogen peroxide
Oryza sativa
|
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| 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. |
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| Advisory Committee |
Ching-mei Hsu - chair
Hao-Jen Huang - co-chair
Zin-huang Liu - advisor
|
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| Files |
indicate access worldwide |
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| Date of Submission |
2006-07-11 |
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