| 重金属胁迫培养对2种细菌生长曲线的影响(摘要)(英文) |
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| 引用本文： | 李淑英,苏亚丽,周元清,史云东,别金蓉.重金属胁迫培养对2种细菌生长曲线的影响(摘要)(英文)[J].农业科学与技术,2010(8):149-152. |
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| 作者姓名： | 李淑英 苏亚丽 周元清 史云东 别金蓉 |
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| 作者单位： | 玉溪师范学院资源环境学院,云南玉溪653100 |
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| 基金项目： | 云南省教育厅科学研究基金项目“重金属对几种微生物的胁迫生理毒性研究”（09Y0382）;云南省自然基金项目“重金属污染中三种水生植物的毒害机理研究”（2008ZC161M）. |
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| 摘 要： | 目的]研究重金属胁迫培养对2种细菌生长曲线的影响。方法]以大肠杆菌和枯草芽孢杆菌2种典型细菌为试验材料,采用传统培养方法,选择5种重金属离子Cu2+、Hg2+、Pb2+、Cd2+、Cr6+在不同浓度下对其进行胁迫培养,通过测定2种细菌的生长曲线,研究外源性重金属对2种细菌生长的影响。结果]Hg2+、Cd2+毒性较强,2种细菌的增殖在高浓度时受到抑制,G+比G-更为敏感;当重金属浓度50mg/L后,5种重金属的对2种细菌的毒性顺序为Hg2+Cd2+Cu2+Cr6+≈Pb2+。结论]该研究结果为进一步研究重金属对环境及生态系统的影响奠定基础。
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| 关 键 词： | 重金属 大肠杆菌 枯草芽孢杆菌 生长曲线 胁迫 |
Effects of Heavy Metal Stress on the Growth Curves of Two Sepcies of Bacteria |
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| LI Shu-ying,SU Ya-li,ZHOU Yuan-qing,SHI Yun-dong,BIE Jin-rong.Effects of Heavy Metal Stress on the Growth Curves of Two Sepcies of Bacteria[J].Agricultural Science ＆ Technology,2010(8):149-152. |
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| Authors: | LI Shu-ying SU Ya-li ZHOU Yuan-qing SHI Yun-dong BIE Jin-rong |
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| Institution: | College of Resources and Environment,Yuxi Normal University,Yuxi 653100 |
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| Abstract: | Objective] The aim was to study on the effects of heavy metal stress on the growth curves of Escherichia coli and Bacillus subtili. Method] Using traditional culture method,Escherichia coli and Bacillus subtili were cultured under heavy metal stress including Cu2＋,Hg2＋,Pb2＋,Cd2＋ and Cr6＋ in different concentrations. Then the growth curves of the bacteria were determined to investigate the effects of exogenous heavy metals on the growth of the two kinds of bacteria. Result] The proliferation of the two bacteria was inhibited at high concentrations of Hg2＋ and Cd2＋ respectively,and G＋ is more sensitive to them than G-; when the heavy metal concentration was 50 mg/L,the toxicity of the five kinds of heavy metals on the two bacteria was Hg2＋Cd2＋Cu2＋Cr6＋≈Pb2＋. Conclusion] The research will provide a basis to explore the effects of heavy metal on environment and ecological system. |
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| Keywords: | Heavy metal Escherichia coli Bacillus subtili Growth curve Stress |
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