【摘 要】
：
CO2濃度升高造成溫室效應,微藻光合作用效率高,被認為是生物性固碳的重要材料之一.提高微藻CO2固定效率可以增進生物性固碳效率.本研究以N-methyl-N-nitro-N-nitrosoguan
【机 构】
：
國立中山大雄海洋生物科技暨資源學系,高雄804國立交通大學生物科技系,新竹300國立成功大學化學工程學系,台南701
【出 处】
：
第二届海峡两岸藻类学与藻类产业论坛
论文部分内容阅读
CO2濃度升高造成溫室效應,微藻光合作用效率高,被認為是生物性固碳的重要材料之一.提高微藻CO2固定效率可以增進生物性固碳效率.本研究以N-methyl-N-nitro-N-nitrosoguanidine (NTG)進行化學突變改進適合台灣養豬廢水生長之小球藻的CO2利用效率及高溫耐受性,NTG處理獲得耐高溫及高CO2利用效率突變株兩株(Mutant-4=M4；Mutant-7=M7).M4及M7突變株CO2濃度提高情形下,生長速率提高5倍,CO2濃度在≥6％達最高值,光合作用氧氣釋放效率被提高,光反應中心Ⅱ活性較高,代表突變株的光合作用代謝明顯提高.在對於光的需求是200 mol·m-2·s-1,在40℃高溫有相同之生長速率.這些結果顯示NTG隨機突變可以獲得CO2利用效率高五倍及高溫突變株,有利於未來利用適合養豬廢水生長微藻進行生物性固碳之研發.
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