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湖泊科学  2002 

转MT-like基因衣藻的重金属结合能力与抗性特征分析

DOI: 10.18307/2002.0309

Keywords: DNA重组,莱茵衣藻,废水处理

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Abstract:

通过对转MT-like基因衣藻和其野生品系的比较分析,发现转基因藻株对重金属镉和铜的结合能力及抗性均有大幅提高.在重金属结合能力方面,低浓度(5~10μmol/L)的镉溶液中,转基因藻重金属结合量是野生株的1.5倍左右,而相对高浓度(30~50μmol/L)的镉溶液中,由于重金属对藻细胞的毒害作用,使两者的差异不明显.在重金属铜和镉的抗性方面,转基因藻表现出明显高于野生藻株的抗性特征.用转基因藻去处理含铜的工业废水,结果发现转基因藻的处理效率可以提高10%以上.这说明DNA重组技术对提高藻类的废水处理效率方面具有较大的潜力.

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