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題 名 | Excess Copper Induces An Accumulation of Putrescine in Rice Leaves=過量銅離子處理會誘導水稻切離葉片putrescine之累積 |
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作 者 | 林傳琦; 高景輝; | 書刊名 | Botanical Bulletin of Academia Sinica |
卷 期 | 40:3 1999.07[民88.07] |
頁 次 | 頁213-218 |
分類號 | 434.111 |
關鍵詞 | 銅; 水稻; Copper; Putrescine; Oryza sativa; |
語 文 | 英文(English) |
中文摘要 | 本研究係探討過量銅離子(硫酸鹽型式)處理對水稻切離葉片 putrescine (Put) 含量之影響。不論是光線或黑暗下,銅離子處理會導致 Put 含量之增加。然而,光線下 Put 含量之增加大於黑暗下:平示光線對 Put 含量糊口之重要性。以光合作用電子傳遞之抑制劑[3-(3,4.dichloropheny1)-1,1-dimethylurea] 處理可有效的降低光線下銅離子處理所誘導之 Put 之累積。在黑暗下添加葡萄糖或蔗糖可增加銅離子所誘導之 put 累積。在光線下,銅離子亦可誘導其他六種水稻切離葉片 Put 之累積。 D-Arginine 與α-methylornithine 降低銅離子所誘導之Put累積,顯示銅離子可增加合成PM之酵素,亦即arginine decarboxylase 與 ornithine decarboxylase 之活性。 |
英文摘要 | The effect of excess Cu'-' (sulfate salt) on putrescine (Put) accumulation in detached rice leaves was investigated. Cue+treatment increased Put concentrations in rice leaves under both light and dark conditions. This increase was more pronounced in the light than in the dark, suggesting the importance of illumination in Cuz+-induced accumulation of Put in detached rice leaves. The photosynthetic electron transport inhibitor 3-(3,4-dichlorophenyl)1, 1 -dimethylurea reduced Put accumulation induced by Cue in the light. In darkness, Cu'-'-induced Put accumulation was more effective in the presence of glucose or sucrose than in their absence. In the light, Cu'-' also induced Put accumulation in six other rice cultivars. D-Arginine and a-methylornithine decreased concentrations of Put induced by Cu", indicating that Cue' may affect the activities of both arginine decarboxylase and ornithine decarboxylase, enzymes responsible for the biosynthesis of Put. |
本系統中英文摘要資訊取自各篇刊載內容。