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| 白银矿区土壤重金属及可培养细菌重金属耐受性研究 |
| Investigation on Heavy Metal Content and Heavy Metal Tolerance of Culturable Bacteria in Soil of Baiyin Mining Area |
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| DOI： |
| 中文关键词: 可培养细菌 重金属耐受性 土壤污染 白银矿区 |
| 英文关键词: Culturable bacteria Heavy metal tolerance Soil contamination Baiyin mining area |
| 基金项目:2020年国家级大学生创新创业训练计划 “植物内生菌修复矿区铜锌重金属污染土壤的技术研发”基金资助项目（202010737004）；甘肃省科技计划“金昌矿区骆驼蓬根际微生物磷循环机制研究”基金资助项目（20JR10RA282） |
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| 中文摘要: |
| 对白银矿区土壤重金属进行分析研究，分离、筛选和鉴定了受污染土壤中的可培养细菌，并考察其对土壤中重金属胁迫的耐受性。结果表明：白银矿区王岘镇尾渣堆和东大沟河沟土壤重金属污染Pb＞Zn＞Cu；从污染最严重的土壤中分离、筛选出砖红色微杆菌（Microbacterium testaceum）、特基拉芽孢杆菌（Bacillus tequilensis）和解单端孢菌素微杆菌（Microbacterium trichothecenolyticum）3种细菌，其中菌株M1（Microbacterium testaceum）对Pb、Zn、Cu、Cd的胁迫具有明显的耐受性。 |
| 英文摘要: |
| The heavy metals in soil of Baiyin mining area were analyzed, the culturable bacteria in contaminated soil were isolated, screened and identified, and their tolerance to heavy metal stress was investigated. The results showed that the pollution degree of heavy metals in soil of Wangxian town and Dongdagou river in Baiyin mining area was Pb＞Zn＞Cu. Three kinds of bacteria, Microbacterium testaceum, Bacillus tequilensis and Microbacterium trichothecenolyticum were isolated and screened from the most polluted soil. Among them, strain M1 (Microbacterium testaceum) had obvious tolerance to Pb, Zn, Cu and Cd stress. |
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