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篇名 CHILLING STRESS EFFECTS ON THE GROWTH, MITOCHONDRIAL ACTIVITY AND PROTEIN SYNTHESIS IN ETIOLATED MUNGBEAN SEEDLINGS
卷期 36:3
並列篇名 低湿逆境對綠豆白化幼苗之生長、粒線體活性及其蛋白質合成之影響
作者 陳益明劉心斐林秋榮
頁次 277-290
關鍵字 ScopusTSCISCIE
出刊日期 199109

中文摘要

本硏究以對低溫敏感的植物-綠豆(Vigna radiata L.,)爲材料。在黑暗中萌芽32小時的綠豆幼苗,經4°C處理不同時間後,分析其生長、粒線體活性及蛋白質合成能力等;其結果顯示下列各種現象皆受到抑制:㈠幼苗的生長,㈡粒線體的succinate dehydrogenease活性;㈢幼苗的蛋白質合成能力。但低溫處理會導致幼苗在室溫下呼吸速率增快,且幼苗的組織也受到傷害,因此組織內溶質的漏出物增加。在4°C低溫處理下所合成的35S-蛋白質,經SDS-膠體電泳分析及fluoro-graphy後,其中有13種蛋白質帶(protein band)是低溫誘導出的蛋白質(chilling induced proteins);其分子量是 110,88,78,69,58,48,38,27,22,19,14,12.5 及 10.5 KD,其 中88,69,58,48,38,14,12.5及10.5 KD是主要的低溫誘導蛋白質。這些蛋白質完全與綠豆的熱休克蛋白質不同。

英文摘要

Mungbean (Vigna radiata L., a chilling sensitive plant species, was used in this study. Seeds were germinated at 28°C in the dark for 32 h before cold treatment. The seedlings were chilled at 4°C for various durations. Growth, respiration rate, protein synthetic activity, cellular leakages and succinate dehj^drogenase activity in isolated mitochondria were then determined. Chilling at 4°C suppressed seedling growth, increased solute leakages, suppressed succinate dehydrogenase activity in isolated mitochondria, inhibited general protein synthesis and induced the synthesis of a set of proteins termed chilling-induced proteins^ The molecular weights of these chilling-induced proteins were 110,88,78,69,58, 48, 38, 27, 22,19,14,12.5 and 10.5 Kd,respectively and the proteins with molecular weights of 88, 69, 58, 48, 38, 14, 12.5 and 10^5 Kd were the major chilling-induced proteins of mungbean seedlings. These chilling-induced proteins were different from the heat shock proteins of mungbean seedlings.

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