Effect of Light on Peroxidase and Lignin Synthesis in Mung Bean Hypocotyls
碩士 === 國立中山大學 === 生物科學系研究所 === 89 === Two days of light irradiance reduced the levels of endogenous indole-3-acetic acid in mungbean (Phaseolus radiatus) hypocotyls. The important enzymes for IAA metabolic degradation are peroxidases and laccase. Peroxidase activity of mungbean hypocotyls was enhanc...
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| Format: | Others |
| Language: | en_US |
| Published: |
2000
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| Online Access: | http://ndltd.ncl.edu.tw/handle/36807062437306628914 |
| Summary: | 碩士 === 國立中山大學 === 生物科學系研究所 === 89 === Two days of light irradiance reduced the levels of endogenous indole-3-acetic acid in mungbean (Phaseolus radiatus) hypocotyls. The important enzymes for IAA metabolic degradation are peroxidases and laccase. Peroxidase activity of mungbean hypocotyls was enhanced sevenfold by light. Laccase activity also remarkably increased after illumination. The lignin content in mungbean hypocotyls were enhanced twofold by light treatment. The inhibition of mungbean hypocotyls growth induced by light might be due to the decline of endogenous IAA, which was degraded by cationic peroxidase. The high level of lignin were correlated with the increased anionic peroxidase activity in light-treated tissues.
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