
Effect of Fusarium sp. shz-2.27 combined with Aegilops Linn. in remediation of oil-contaminated soil
YANG Zhengmingze, QU Lina, WANG Meiqi, ZHAN Han, AN Jialan, PENG Hanqing
Anhui Agricultural Science Bulletin ›› 2025, Vol. 31 ›› Issue (6) : 72-77.
Effect of Fusarium sp. shz-2.27 combined with Aegilops Linn. in remediation of oil-contaminated soil
To explore more effective technical solutions for the phytoremediation of oil-contaminated soil using fungi-plant associations, Aegilops Linn. was selected as the test plant and co-inoculated with a highly efficient crude oil-degrading filamentous fungus, Fusarium sp. shz-2.27, into soil with different oil contamination levels 0, 0.9%, and 1.5% (w/w). By measuring changes in plant growth, detecting the degradation of petroleum hydrocarbons in the soil sample, soil enzyme activities, and soil physicochemical properties, the effects of oil contamination levels, filamentous fungi, and plant roots on the remediation of oil-contaminated soil were investigated. The results showed that in terms of plant root growth, as the oil contamination level in the soil increased, the average root length of the plants gradually shortened, indicating that higher oil contamination levels had a stronger inhibitory effect on plant root growth. In terms of petroleum degradation rate, the degradation rate of petroleum hydrocarbons in the soil co-inoculated with plants and fungi ranged from 65.37% to 78.67%, demonstrating that the co-inoculation of plants and fungi effectively promoted the removal of petroleum pollutants from the soil. In terms of soil enzyme activities, the activities of polyphenol oxidase, lipase, urease, and dehydrogenase in the soil of the microbe-plant treatment group showed good activity levels. In terms of soil physicochemical properties, the soil remediated by the microbe-plant treatment group also showed good physicochemical properties, with total nitrogen content ranged from 0.047 to 0.103 g/kg, total sugar content ranged from 0.299 to 1.412 mg/g, pH shifted towards neutral, and the electrical conductivity was higher than that of the plant group. These results indicate that compared to single remediation techniques, the microbe-plant combined remediation technique significantly improved petroleum degradation efficiency. This technique not only removes oil pollutants but also ameliorates soil properties, promotes vegetation recovery, and improves the ecological environment. Given that high concentrations of oil contamination may have inhibitory effects on the growth and metabolism of plants and microorganisms, the method proposed in this study is more suitable for implementation in moderately contaminated oil-soil environments, providing a reference for the ecological restoration of oil-contaminated soil.
in situ remediation / plant-microbial combination remediation / interactivity / oil-contaminated soil {{custom_keyword}} /
表1 不同处理土壤样品的理化性质 |
理化指标 | 空白组 | 真菌组 | 植物组 | 真菌+植物组 | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
0 | 0.9% | 1.5% | 0 | 0.9% | 1.5% | 0 | 0.9% | 1.5% | 0 | 0.9% | 1.5% | |
总氮/(g/kg) | 0.080 | 0.053 | 0.028 | 0.085 | 0.075 | 0.035 | 0.081 | 0.096 | 0.041 | 0.083 | 0.103 | 0.047 |
总糖/(mg/g) | 0.426 | 0.314 | 0.220 | 0.426 | 0.265 | 0.309 | 0.932 | 0.419 | 0.227 | 1.412 | 0.553 | 0.299 |
pH | 7.075 | 7.607 | 8.630 | 6.967 | 6.553 | 6.430 | 7.102 | 6.857 | 6.615 | 7.063 | 6.860 | 6.810 |
电导率/(μS/cm) | 175.01 | 168.48 | 156.95 | 246.01 | 194.92 | 193.63 | 166.52 | 154.17 | 148.52 | 178.73 | 166.63 | 165.83 |
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