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Plants can stimulate the microbes to degrade ubiquitous petroleum hydrocarbons (PHCs), which has prompted a novel view on rhizoremediation. In the present study, the degradation rate of PHCs was investigated and 16S rRNA gene analysis was performed to investigate the PHC-degrading bacteria in petroleum-contaminated soil with different plants. Mirabilis jalapa (M. jalapa) has a higher PHC degradation rate than Lolium perenne (L. perenne) under petroleum contamination. The bacterial diversity in rhizospheric soil was decreased but the relative abundance of Actinobacteriota, Proteobacteria, and Candidatus Saccharibacteria were significant increased on 45 days petroleum-contaminated rhizospheric soil. In addition, the relative expression of PHC degradation-related genes, the content of malic acid and citric acid of the root exudates in the two plants was significantly increased in response to petroleum stress. The content of citric acid increased 11.9 times in M. jalapa and 3.4 times in L. perenne, respectively, in response to petroleum stress. These results indicate that M. jalapa changes the hydrocarbon-degrading microbial community to enhance the degradation of PHCs by root exudates and phytostimulation.
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http://dx.doi.org/10.1007/s11356-024-33667-2 | DOI Listing |
Microbiol Resour Announc
September 2025
School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, China.
We present the draft genome sequence of a petroleum-degrading bacterium DG-1. The genome size of strain DG-1 is 6,734,315 bp with a GC content of 66.07%, which contains 6,213 genes, including crude oil degradation, biosurfactant synthesis, and quorum sensing, providing valuable insights into the mechanisms of petroleum biodegradation.
View Article and Find Full Text PDFJ Environ Manage
August 2025
Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education) and Dalian POCT Laboratory, School of Environmental Science and Technology, Dalian University of Technology, Dalian, 116024, China. Electronic address:
The exogenous bioaugmentation technique is a widely employed strategy for remediating petroleum-contaminated soil. However, sustaining exogenous functional bacteria over extended periods in complex petroleum-contaminated environments is challenging, leading to reduced efficacy, and the interaction mechanisms with indigenous microorganisms remain poorly understood. This study utilized the previously developed petroleum-degrading bacterial agent ECT in a continuous bioaugmentation (C-Bio) approach for soil remediation.
View Article and Find Full Text PDFJ Environ Manage
August 2025
Institute of Environmental Engineering; Center for Emerging Contaminants Research, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan; Department of Public Health, College of Health Science, Kaohsiung Medical University, Kaohsiung, 807, Taiwan. Electronic address:
Petroleum serves as a critical energy source and industrial raw material, yet its leakage frequently leads to severe soil contamination. Traditional remediation methods for petroleum-contaminated soil are often energy-intensive and associated with high carbon emissions. To address climate change challenges, it is imperative to adopt green and sustainable remediation technologies that reduce energy consumption and carbon footprints simultaneously.
View Article and Find Full Text PDFJ Environ Manage
August 2025
CSIR-North East Institute of Science and Technology, Jorhat, 785006, Assam, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India. Electronic address:
Petroleum waste pollution presents a major environmental challenge, highlighting the need for sustainable and efficient remediation strategies. Bioremediation has emerged as a promising eco-friendly solution that utilizes microbial communities to degrade harmful hydrocarbons. Among various bioremediation approaches, composting is an established organic waste treatment method that has been effectively adapted for managing petroleum-contaminated sludge.
View Article and Find Full Text PDFEnviron Res
August 2025
School of Marine Sciences, Sun Yat-Sen University, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, China.
We developed KOH-activated biochar (K-BC) and sophorolipid-modified K-BC (S-K-BC) for enhancing phyto-microbial remediation of petroleum hydrocarbon (PH)-contaminated soil using Iris lactea Pall. Subsequently, three remediation systems were established: KBC-SLs (Iris lactea Pall. + 2 wt% S-K-BC), KBC + SLs (Iris lactea Pall.
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