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环境化学  2015 

一株耐铜不动杆菌USTB-F的富集特性

Keywords: 耐铜,不动杆菌,富集

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Abstract:

采用浓度梯度筛选的方法,从铜污染土壤中分离筛选到一株耐受铜的菌株USTB-F,最高耐受浓度为560mg·L-1.通过生理生化实验和16SrDNA序列分析鉴定属于不动杆菌属,命名为Acinetobactersp.USTB-F.用单因素方法得到USTB-F的最适生长条件为T=30℃;pH=6.0;NaCl浓度为0.3%.对USTB-F富集机理做了初步研究,ICP-OES测定数据表明USTB-F菌对铜离子有富集功能,被吸收的铜离子有84.97%分布在细胞质内,其余主要分布在细胞膜和细胞壁上.

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