| 一株假单胞菌MBR对亚碲酸盐的好氧还原特征 |
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| 引用本文： | 张亮,何晓红,张礼霞,陶勇,王晓梅,占国强,李大平.一株假单胞菌MBR对亚碲酸盐的好氧还原特征[J].应用与环境生物学报,2011(1):126-129. |
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| 作者姓名： | 张亮 何晓红 张礼霞 陶勇 王晓梅 占国强 李大平 |
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| 作者单位： | 中国科学院成都生物研究所;中国科学院研究生院; |
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| 基金项目： | 中国科学院知识创新工程重要方向项目(No.KSCX2-YW-G-075-12)资助~~ |
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| 摘 要： | 本实验室前期获得了一株假单胞菌MBR(Pseudomonas sp.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2 mmol/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.
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| 关 键 词： | 亚碲酸盐 假单胞菌 好氧还原 最小抑制浓度 |
Characterization of Aerobic Reduction of Tellurite by Pseudomonas sp. MBR |
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| ZHANG Liang,HE Xiaohong,ZHANG Lixia,TAO Yong,WANG Xiaomei,ZHAN Guoqiang, & LI Daping.Characterization of Aerobic Reduction of Tellurite by Pseudomonas sp. MBR[J].Chinese Journal of Applied and Environmental Biology,2011(1):126-129. |
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| Authors: | ZHANG Liang HE Xiaohong ZHANG Lixia TAO Yong WANG Xiaomei ZHAN Guoqiang & LI Daping |
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| Institution: | ZHANG Liang1,2,HE Xiaohong1,ZHANG Lixia1,TAO Yong1,WANG Xiaomei1,ZHAN Guoqiang1,2 & LI Daping1(1Chengdu Institute of Biology,Chinese Academy of Sciences,Chengdu 610041,China)(2Graduate University of Chinese Academy of Sciences,Beijing 100049,China) |
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| Abstract: | Pseudomonas sp. MBR,a gram-negative bacterium,reduced the soluble oxyanion tellurite to metallic tellurium supplied with organic carbon source as electron donor in the presence of oxygen.This study examined the characteristics of the reduction of tellurite to tellurium by this strain.The result showed that Pseudomonas sp.MBR was able to reduce tellurite into metallic Te under high concentration,and was highly resistant to toxic tellurite sodium.Because of the diversity of electron donors offered by differen... |
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| Keywords: | tellurite Pseudomonas aerobic reduction minimum inhibitory concentration |
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