| 王桂萍,郭明志,陈亚华,沈振国,夏 妍.抗铜细菌对难溶性铜的活化及其强化植物修复铜污染土壤[J].农业环境科学学报,2014,33(2):332-338. |
| 抗铜细菌对难溶性铜的活化及其强化植物修复铜污染土壤 |
| Solubilization of Insoluble Copper and Enhancement of Phytoremediation by Copper-resistant Bacteria Inoculated to Copper-contaminated Soil |
| |
| DOI：10.11654/jaes.2014.02.018 |
| 中文关键词: 抗铜细菌，溶解作用，联合修复 |
| 英文关键词: copper-resistant bacteria solubilization plant-microbial remediation |
| 基金项目: |
|
| 摘要点击次数: 2009 |
| 全文下载次数: 2036 |
| 中文摘要: |
| 研究了2株抗铜细菌F16a和Fw17a在不同培养条件下，对培养基溶液和铜污染土壤中难溶性铜的活化特性，并结合盆栽试验调查其强化植物修复铜污染土壤的效果。结果表明，在液体有氮培养基（含500 mg·L-1 CuCO3）中，菌株F16a能显著提高培养基溶液中铜离子的浓度，Fw17a则能显著降低培养基溶液中铜离子的浓度。培养基溶液中铜浓度增加（或降低）幅度和速率随着F16a（或Fw17a）接种量增加而增大。当F16a和Fw17a分别处于35 ℃和30 ℃培养温度时，其活化或钝化铜的效果最佳。在Cu污染土壤中加入F16a菌悬液能显著提高土壤溶液中的Cu浓度，而Fw17a对污染土壤Cu的钝化效果不明显。盆栽试验结果表明，接入菌株F16a后，能显著提高三叶草和香根草地上部对污染土壤中铜的累积及提取量。 |
| 英文摘要: |
| This study investigated the effects of two copper（Cu）-resistant bacterial strains, F16a and Fw17a, on insoluble Cu solubilization in different cultures and Cu-contaminated soils, and also evaluated their effects on the phytoremediation of Cu-contaminated soils in a pot experiment. Compared with the control, F16a increased water-soluble Cu concentrations, whereas Fw17a decreased water-soluble Cu in supernatant of N-containing liquid medium with 500 mg·L-1 CuCO3. The magnitude of such change（increase or decrease） in water-soluble Cu concentrations increased with amount of F16a（or Fw17a） inoculums at the beginning. F16a and Fw17a had the greatest effects when exposed to their optimum temperatures. F16a significantly enhanced water-soluble Cu in Cu-contaminated soil, but Fw17a had little effects on water-soluble Cu. Inoculation with F16a significantly increased Cu absorption and accumulation in shoots of Trifolium repensa and Vetiver zizanioides in Cu-contaminated soil. |
| HTML
查看全文
查看/发表评论 下载PDF阅读器 |
