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OALib Journal期刊
ISSN: 2333-9721
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一株假单胞菌mbr对亚碲酸盐的好氧还原特征
DOI: 10.3724/SP.J.1145.2011.00126, PP. 126-129
Keywords: 亚碲酸盐,假单胞菌,好氧还原,最小抑制浓度
Abstract:
本实验室前期获得了一株假单胞菌mbr（pseudomonassp.mbr），能够在好氧环境以有机碳源为电子供体，将可溶性强、毒性高的亚碲酸盐还原为无毒的不溶性碲单质.本文主要报道对该菌好氧还原亚碲酸盐为碲单质的特性研究，结果表明，该菌对高浓度的亚碲酸钠具有抗性并还原为单质，由于碳源提供的电子供体不同，该菌对亚碲酸盐的最小抑制浓度（mic）有较大差异，其中以丙酮酸为碳源的mic最高，达到2mmol/l.扫描电子显微镜和透射电子显微镜观察显示亚碲酸钠的毒性使细胞的形态发生了严重变形，细胞膜有裂解的迹象，还原的te单质大量积累在细胞质内.图5表1参18
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