Phytoremediation of Oil-Contaminated Soils by Combining Flowering Plant Cultivation and Inoculation with <i>Acinetobacter junii</i>Strain M-2

• 作者: Masahiko Tamaki Shuichiro Murakami Takamitsu Kai Yu Okamoto
• 来源期刊: 农业化学和环境(英文)
• 学科: 农学
• 关键词: PHYTOREMEDIATION ZINNIA Acinetobacter junii Strain M-2 Total Petroleum Hydrocarbon Dehydrogenase Activity
• 年，卷（期）: nyhxhhjyw_2020,（3）
• 页码范围: 107-120
• 页数: 14页
• 分类号: S15

摘要

Oil contamination of the soil by petroleum products has become an enormous environmental problem. In this study, we examined whether remediation of oil-contaminated soils by cultivating three flowering plants (Mimosa, Gazania, and Zinnia) could be enhanced by inoculation with </span><i><span style="font-family:Verdana;">Acinetobacter junii</span></i><span style="font-family:Verdana;"> strain M-2 at different plant growth stages (at sowing, at early growth, and at mid-growth). The growth of Zinnia cultivated in oil-contaminated soils inoculated at sowing was significantly superior to that in the non-inoculated soil. Although total petroleum hydrocarbon concentrations in soils inoculated at sowing were nominally lower than those in non-inoculated soils, especially in the case of Zinnia planting, the effect did not reach statistical significance. However, dehydrogenase activity was significantly higher in </span><span><span style="font-family:Verdana;">the soils inoculated with </span><i><span style="font-family:Verdana;">A. junii</span></i><span style="font-family:Verdana;"> strain M-2 than in non-inoculated soils for all three plant species tested. These results demonstrate that a combination of ornamental plant cultivation (particularly Zinnia) and inoculation with </span><i><span style="font-family:Verdana;">A. junii</span></i><span style="font-family:Verdana;"> strain M-2 increases the efficiency of oil-contaminated soil phytoremediation.