Wechtler Laura, Falla-Angel Jaïro, Bonnefoy Antoine, Laval-Gilly Philippe
Université de Lorraine, INRAE, LSE, Nancy, France.
Université de Lorraine, IUT de Thionville-Yutz, Yutz, France.
Int J Phytoremediation. 2024;26(1):143-150. doi: 10.1080/15226514.2023.2231548. Epub 2023 Jul 5.
Phytoremediation is a biological soil remediation technique using plants and their associated microorganisms to clean-up contaminated soils and improve soils' quality. We tested whether a co-culture between (MxG) and L. would enhance the soil biological quality. The objective was to determine the influence of MxG in mono- and in co-culture with white clover on the soil microbial activity, biomass and density. MxG was tested in mono- and in co-culture with white clover in a mesocosm over 148 days. The microbial respiration (CO production), the microbial biomass and the microbial density of the technosol were measured. Results showed that MxG induced an increase in microbial activity in the technosol compared to the non-planted condition with the co-culture having a greater impact. Regarding the bacterial density, MxG in mono- and in co-culture significantly increased the 16S rDNA gene copy number. The co-culture increased the microbial biomass, the fungal density and stimulated the degrading bacterial population, contrary to the monoculture and the non-planted condition. We can conclude the co-culture between MxG and white clover was more interesting than MxG monoculture in regards to the technosol biological quality and its potential for PAH remediation improvement.
植物修复是一种利用植物及其相关微生物来清理受污染土壤并改善土壤质量的生物土壤修复技术。我们测试了（MxG）与白三叶草的共培养是否会提高土壤生物质量。目的是确定MxG单培养以及与白三叶草共培养对白三叶草对土壤微生物活性、生物量和密度的影响。在中宇宙环境中对MxG进行了148天的单培养以及与白三叶草的共培养测试。测量了工业土壤的微生物呼吸（二氧化碳产生量）、微生物生物量和微生物密度。结果表明，与未种植的对照条件相比，MxG使工业土壤中的微生物活性增加，共培养的影响更大。关于细菌密度，MxG单培养和共培养均显著增加了16S rDNA基因拷贝数。与单培养和未种植条件相反，共培养增加了微生物生物量、真菌密度并刺激了降解细菌种群。我们可以得出结论，就工业土壤生物质量及其改善多环芳烃修复的潜力而言，MxG与白三叶草的共培养比MxG单培养更具优势。
