Differences in geological conditions have reshaped the structure and diversity of microbial communities in oily soils

Zhu, Nianyong; Wang, Jiangqin; Wang, Yonggang; Li, Shaowei; Chen, Jixiang

doi:10.1016/j.envpol.2022.119404

Cited by 17 publications

(6 citation statements)

References 71 publications

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“…In comparison with the CK, ACE and Chao indices were significantly increased, which was attributed to the inoculation of SRB increase in the number of system bacterial species ( Yin et al, 2022 ). Meanwhile, the collaborative remediation groups of CM-L, CM-M, and CM-H presented higher richness indices compared to the M. This was explained that the improvement of the harsh environment (strongly acidic soil) can provide a better living environment for various bacterial colonization ( Zhu et al, 2022 ). In addition, sufficient nutrients can stimulate the growth and metabolism of rare indigenous microorganisms whose abundance was not counted previously ( Xu et al, 2022 ; Yin et al, 2022 ).…”

Section: Resultsmentioning

confidence: 99%

“…According to the descending order of bacterial abundance, the majority of the top 30 genera had a positive correlation with the pH value, indicating that these microbes can contribute to the improvement of soil pH. Due to potential resistance to the harsh environment and acid consumption in self-metabolism, many bacterial species can improve their pH value and colonize into the acid-contaminated system ( Zhu et al, 2022 ). In particular, these key bacterial species involving Desulfosporosinus , Desulfitobacterium , and Desulfobulbus showed a negative correction with all factors, except for the pH above result indicated that these microbes can tolerate heavy metals and high sulfate conditions.…”

Section: Resultsmentioning

confidence: 99%

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Insights into remediation effects and bacterial diversity of different remediation measures in rare earth mine soil with SO42− and heavy metals

et al. 2023

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The increased demand for rare earth resources has led to an increase in the development of rare earth mines (REMs). However, the production of high-concentration leaching agents (SO42−) and heavy metals as a result of rare earth mining has increased, necessitating the removal of contaminants. Here, a series of experiments with different remediation measures, including control (CK), sulfate-reducing bacteria (SRB) alone (M), chemicals (Ca(OH)2, 1.5 g/kg) plus SRB (CM-L), chemicals (Ca(OH)2, 3.0 g/kg) plus SRB (CM-M), and chemicals (Ca(OH)2, 4.5 g/kg) plus SRB (CM-H), were conducted to investigate the removal effect of SO42−, Pb, Zn, and Mn from the REM soil. Then, a high-throughput sequencing technology was applied to explore the response of bacterial community diversity and functions with different remediation measures. The results indicated that CM-M treatment had a more efficient removal effect for SO42−, Pb, Zn, and Mn than the others, up to 94.6, 88.3, 98.7, and 91%, respectively. Soil bacterial abundance and diversity were significantly affected by treatments with the inoculation of SRB in comparison with CK. The relative abundance of Desulfobacterota with the ability to transform SO42− into S2− increased significantly in all treatments, except for CK. There was a strong correlation between environmental factors (pH, Eh, SO42−, Pb, and Zn) and bacterial community structure. Furthermore, functional prediction analysis revealed that the SRB inoculation treatments significantly increased the abundance of sulfate respiration, sulfite respiration, and nitrogen fixation, while decreasing the abundance of manganese oxidation, dark hydrogen oxidation, and denitrification. This provides good evidence for us to understand the difference in removal efficiency, bacterial community structure, and function by different remediation measures that help select a more efficient and sustainable method to remediate contaminants in the REM soil.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Insights into remediation effects and bacterial diversity of different remediation measures in rare earth mine soil with SO42− and heavy metals

et al. 2023

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“…The annual precipitation in the NMC area is the highest among the three sample points, indicating that precipitation and endophyte diversity are closely related. Previous studies have shown that differences in precipitation will lead to differences in soil microorganisms, and annual precipitation is positively correlated with soil microbial diversity 42 , 43 . In addition, among the three sample points, the NMC sample point has the highest pH and salinity value (pH 8.5, salinity 3 ms/cm), followed by XGYZ (pH 8.2, salinity 0.05 ms/cm).…”

Section: Discussionmentioning

confidence: 98%

High-throughput sequencing-based analysis of the composition and diversity of the endophyte community in roots of Stellera chamaejasme

Zhang,

Li,

Yin

et al. 2024

Sci Rep

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Stellera chamaejasme (S. chamaejasme) is an important medicinal plant with heat-clearing, detoxifying, swelling and anti-inflammatory effects. At the same time, it is also one of the iconic plants of natural grassland degradation in northwest China, playing a key role in the invasion process. Plant endophytes live in healthy plant tissues and can synthesize substances needed for plant growth, induce disease resistance in host plants, and enhance plant resistance to environmental stress. Therefore, studying the root endophytes of S. chamaejasme is of great significance for mining beneficial microbial resources and biological prevention and control of S. chamaejasme. This study used Illumina MiSeq high-throughput sequencing technology to analyze the composition and diversity of endophytes in the roots of S. chamaejasme in different alpine grasslands (BGC, NMC and XGYZ) in Tibet. Research results show that the main phylum of endophytic fungi in the roots of S. chamaejasme in different regions is Ascomycota, and the main phyla of endophytic bacteria are Actinobacteria, Proteobacteria and Firmicutes (Bacteroidota). Overall, the endophyte diversity of the NMC samples was significantly higher than that of the other two sample sites. Principal coordinate analysis (PCoA) and permutational multivariate analysis of variance (PERMANOVA) results showed significant differences in the composition of endophytic bacterial and fungal communities among BGC, NMC and XGYZ samples. Co-occurrence network analysis of endophytes showed that there were positive correlations between fungi and some negative correlations between bacteria, and the co-occurrence network of bacteria was more complex than that of fungi. In short, this study provides a vital reference for further exploring and utilizing the endophyte resources of S. chamaejasme and an in-depth understanding of the ecological functions of S. chamaejasme endophytes.

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“…These sediments were also highly contaminated with hydrocarbons, despite the absence of oil installations near the river [ 49 ]. Although less frequently, Acidobacteriota has also been associated with soils contaminated by petroleum hydrocarbons [ 50 ]. It is known that between 42 and 95% of bacteria of petroleum-contaminated soils belonged to phylum Proteobacteria, playing a crucial role in soils [ 17 ] and thus potentially being involved in petroleum hydrocarbon degradation.…”

Section: Discussionmentioning

confidence: 99%

Bacterial Diversity in Old Hydrocarbon Polluted Sediments of Ecuadorian Amazon River Basins

Corral-García,

Molina,

Bautista

et al. 2024

Toxics

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The Ecuadorian Amazon rainforest stands out as one of the world’s most biodiverse regions, yet faces significant threats due to oil extraction activities dating back to the 1970s in the northeastern provinces. This research investigates the environmental and societal consequences of prolonged petroleum exploitation and oil spills in Ecuador’s Amazon. Conducted in June 2015, the study involved a comprehensive analysis of freshwater sediment samples from 24 locations in the Rio Aguarico and Napo basins. Parameters such as water and air temperature, conductivity, soil pH, and hydrocarbon concentrations were examined. Total petroleum hydrocarbon (TPH) concentrations ranged from 9.4 to 847.4 mg kg−1, with polycyclic aromatic hydrocarbon (PAH) levels varying from 10.15 to 711.1 mg kg−1. The pristane/phytane ratio indicated historic hydrocarbon pollution in 8 of the 15 chemically analyzed sediments. Using non-culturable techniques (Illumina), bacterial analyses identified over 350 ASV, with prominent families including Comamonadaceae, Chitinophagaceae, Anaeromyxobacteraceae, Sphingomonadaceae, and Xanthobacteraceae. Bacterial diversity, assessed in eight samples, exhibited a positive correlation with PAH concentrations. The study provides insights into how microbial communities respond to varying levels of hydrocarbon pollution, shedding light on the enduring impact of oil exploitation in the Amazonian region. Its objective is to deepen our understanding of the environmental and human well-being in the affected area, underscoring the pressing need for remedial actions in the face of ongoing ecological challenges.

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Differences in geological conditions have reshaped the structure and diversity of microbial communities in oily soils

Cited by 17 publications

References 71 publications

Insights into remediation effects and bacterial diversity of different remediation measures in rare earth mine soil with SO42− and heavy metals

Insights into remediation effects and bacterial diversity of different remediation measures in rare earth mine soil with SO42− and heavy metals

High-throughput sequencing-based analysis of the composition and diversity of the endophyte community in roots of Stellera chamaejasme

Bacterial Diversity in Old Hydrocarbon Polluted Sediments of Ecuadorian Amazon River Basins

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