| 重金属胁迫培养对微生物生长的影响 |
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| 引用本文： | 李淑英,马玉琪,苏亚丽,周元清,李红梅.重金属胁迫培养对微生物生长的影响[J].贵州农业科学,2012(2):90-94. |
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| 作者姓名： | 李淑英 马玉琪 苏亚丽 周元清 李红梅 |
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| 作者单位： | 玉溪师范学院资源环境学院;玉溪师范学院信息学院 |
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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： | 为探究重金属胁迫对微生物生长的影响,以大肠杆菌、枯草芽孢杆菌、啤酒酵母菌和链霉菌为材料,用传统微生物培养方法,研究了不同Hg2+、Cd2+、Cr6+和Pb2+浓度下4种微生物的生长状况。结果表明:低浓度重金属离子对4种微生物生长有促进作用,高浓度有抑制作用,G+较G-对Hg2+和Cd2+更为敏感;4种微生物对重金属离子的敏感性表现为链霉菌>枯草芽胞杆菌>大肠杆菌>啤酒酵母菌,对微生物毒性顺序为Hg2+>Cd2+>Cr6+>Pb2+。
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| 关 键 词： | 重金属 微生物 生长曲线 胁迫 |
Effect of Heavy Metal Stress on Microbial Growth |
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| LI Shu-ying,MA Yu-qi,SU Ya-li,ZHOU Yuan-qing,LI Hong-mei.Effect of Heavy Metal Stress on Microbial Growth[J].Guizhou Agricultural Sciences,2012(2):90-94. |
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| Authors: | LI Shu-ying MA Yu-qi SU Ya-li ZHOU Yuan-qing LI Hong-mei |
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| Institution: | 1(1.College of Environmental Resources,Yuxi Normal University,Yuxi,Yunnan 653100;2.School of Information,Yuxi Normal University,Yuxi,Yunnan 653100,China) |
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| Abstract: | To study the effects of heavy metal stress on microbial growth,taking Escherichia coli,Bacillus subtilis,Saccharomyces erevisiae and Streptomycetaceae as experimental materials,the growth status of the four microbes under heavy metal stress(Hg2 +,Cd2 +,Cr6+ and Pb2 +) were studied by traditional microbiological culture methods.The results showed that heavy metal ions in low concentrations helped the four microbes to grow.But inhibited in high concentration.G+ was more sensitive than G-;The four microbial sensitivity order was Streptomyces > B.subtilis > E.coli > S.erevisiae;the toxic order was Hg2+ > Cd2+ > Cr6+ > Pb2+. |
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| Keywords: | heavy metal microorganisms growth curve stress |
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