| 降解菌S113对甲磺隆污染土壤生物修复作用的研究 |
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| 引用本文： | 黄星,潘继杰,孙纪全,孙笑非,李顺鹏.降解菌S113对甲磺隆污染土壤生物修复作用的研究[J].土壤学报,2008,45(1):150-154. |
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| 作者姓名： | 黄星 潘继杰 孙纪全 孙笑非 李顺鹏 |
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| 作者单位： | 南京农业大学生命科学院,农业部农业环境微生物工程重点开放实验室,南京,210095 |
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| 基金项目： | 国家自然科学基金项目（30500010）、国家“863”计划项目（2006AA102402）、江苏省社会发展项目（BS2007056） |
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| 摘 要： | 在室内条件下,研究了降解菌S113(Methylopila sp.)对甲磺隆污染土壤的修复作用。S113能够以甲磺隆为唯一碳源生长,72h对50mgL-1甲磺隆的降解率达98.38%。投加降解菌S113可显著提高土壤中甲磺隆的降解速率。当甲磺隆浓度为10mgkg-1干土,S113接种量为108个g-1土时,第30天土壤中甲磺隆降解率为76.9%,对照土壤中甲磺隆降解率仅为11.9%。S113降解甲磺隆的速率和接种量呈正相关,当接种量减少为105个g-1干土时,降解菌对甲磺隆的降解作用微弱。在土壤中甲磺隆浓度较低的条件下,S113的降解效果显著,而当土壤中甲磺隆浓度达到50mgkg-1时,甲磺隆降解率仅为39.6%。S113降解土壤中甲磺隆的最适温度为30℃,第30天的降解率可达75.9%。当温度为25℃、20℃时,第30天甲磺隆降解率仅为53.5%和23.9%。S113菌剂灌根,能不同程度地缓解土壤中浓度为40、80μgkg-1的甲磺隆对玉米生长的抑制作用,但当甲磺隆浓度增加到120μgkg-1时,接种S113对药害解除作用不显著。结果表明,人工接种降解菌S113,能有效去除土壤中甲磺隆残留。
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| 关 键 词： | S113 甲磺隆 生物修复 |
| 收稿时间： | 2006-04-12 |
| 修稿时间： | 2006-11-14 |
BIOREMEDIATION OF METSULFURON-METHYL-CONTAMINATED SOIL BY S113 |
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| Huang Xing,Pan Jijie,Sun Jiquan,Sun Xiaofei and Li Shunpeng.BIOREMEDIATION OF METSULFURON-METHYL-CONTAMINATED SOIL BY S113[J].Acta Pedologica Sinica,2008,45(1):150-154. |
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| Authors: | Huang Xing Pan Jijie Sun Jiquan Sun Xiaofei and Li Shunpeng |
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| Institution: | Huang Xing Pan Jijie Sun Jiquan Sun Xiaofei Li Shunpeng(Department of Microbiology,College of Life Science,Nanjing Agricultural University,Nanjing 210095,China)(Key Lab of Microbiological Engineering of Agricultural Environment,Ministry of Agriculture,Nanjing Agricultural University,Nanjing 210095,China) |
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| Abstract: | Bioremediation of metsulfuron-methyl contamined soil with S113(Methylopila sp.)was studied under laboratory conditions.S113 was capable of utilizing metsulfuron-methyl as its sole carbon source for growth and degrading 98.38% of the 50 mg L-1 metsulfuron-methyl within 72 h.Addition of S113 could prominently accelerate degrading of metsulfuron-methyl.When S113 was inoculated into the soil at a rate of 108 cells g-1 dry soil,76.9% of the metsulfuron-methyl(10 mg kg-1dry soil)in the soil was degraded after 30 ... |
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| Keywords: | S113 Metsulfuron-methyl Bioremediation |
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