| URN |
etd-0602100-143359 |
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| Author |
Tsai-Chi Li |
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| Author's Email Address |
m8725615@student.nsysu.edu.tw |
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| Statistics |
This thesis had been viewed 4236 times. Download 1874 times. |
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| Department |
Biological Sciences |
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| Year |
1999 |
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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 Copper on Peroxidase Activity in Peanut Root |
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| Date of Defense |
2000-05-25 |
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| Page Count |
26 |
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| Keyword |
lignification
indole-3-acetic acid
Arachis hypogaea
copper
peroxidase.
|
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| Abstract |
Cu-treated peanut seedlings not only showed a significant inhibition in peanut root growth, but also a decrease in endogenous indole-3-acetic acid (IAA) contents . The decline of IAA content in Cu-treated tissues is accompanied by an increase in cationic peroxidase activity. In addition, the increase in cationic peroxidase (pI 8.5) activity is correlated with an increase in cationic peroxidase transcripts. Cu might suppress the growth of peanut roots by inducing the synthesis of the cationic peroxidase isozyme that degrades endogenous IAA, causing the retardation of peanut root growth. The increase in activity of anionic peroxidases (pI 3.5) is also correlated with the rise in lignin content in Cu-treated roots. We suggest that the increase in anionic peroxidases (pI 3.5) induced by Cu might be responsible for lignin synthesis in peanut roots, and remove excess hydrogen peroxide, thus serving a detoxifying role during Cu treatment. |
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| Advisory Committee |
- co-chair
Teng-Yung Feng - co-chair
- advisor
|
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| Files |
indicate access worldwide |
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| Date of Submission |
2000-06-02 |
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