K-strategy species plays a pivotal role in the natural attenuation of petroleum hydrocarbon pollution in aquifers

Ying, Ma; Zhao, Hangzheng; Shan, Qianjuan; Xu, Yuan; Yu, Mao-Hong; Cui, Jun; Liu, Tong; Qiao, Longkai; He, Xiao-Song

doi:10.1016/j.jhazmat.2021.126559

Cited by 17 publications

(9 citation statements)

References 69 publications

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“…In this study, high-throughput Illumina sequencing (Majorbio, Shanghai, China) was used to characterize the composition of bacterial communities in the water and sediment samples collected from the Douhe Reservoir, which was described in the previously study [28,31]. Briefly, the PCR reaction was used to characterize the bacterial communities on the V4 − V5 regions of 16S ribosomal RNA gene, and each reaction was performed in a 20 μL mixture, and the details of the PCR amplification conditions were consistent with the previous research [32].…”

Section: High-throughput Illumina Sequencingmentioning

confidence: 99%

Characterization of antibiotic resistance genes in drinking water sources of the Douhe Reservoir, Tangshan, northern China: the correlation with bacterial communities and environmental factors

et al. 2022

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Background Antibiotics and antibiotic resistance genes (ARGs) threaten ecological sustainability and human health, especially the drinking water sources of the Douhe Reservoir, which have critical significance amid their direct use by people and the ecological hub of flora and fauna. Although antibiotics and ARGs pollution in reservoirs have been reported, it is of no practical significance to only study the changes (increase or decrease) of the abundance and diversity of ARGs, and it is more important to explore the mechanisms of the changes affecting ARGs. Thus, the occurrence and prevalence characterizations of the spatial and seasonal of the ARGs, mobile genetic elements (MGEs) and bacterial communities were comprehensively studied in present study. Results 263 ARG (nine types of ARGs) and 51 MGE subtypes were detected in 56 samples, and the characteristics of the temporal and spatial distribution of ARGs, MGEs and the composition of bacterial communities were significantly different. Moreover, the correlation among the ARGs, bacterial communities, MGEs and environmental factors were defined, and the co-occurrence patterns associated with ARG subtypes, bacterial genera, and MGE subtypes between water and sediment of the Douhe Reservoir were different. Conclusions In summary, ARGs were ubiquitous presence in water and sediment of the Douhe Reservoir, and the multidrug, aminoglycoside and macrolide–lincosamide–streptogramin B (MLSB) were main types of ARGs. Bacterial genera and the environmental factors [such as temperature (T), nitrate–nitrogen (NO– 3–N), total dissolved nitrogen (TDN), and total phosphorus (TP)] significantly affected the distribution pattern of ARGs. Overall, this research revealed the spatiotemporal change and transmission mechanisms of ARGs in the typical drinking water sources of reservoirs, which will supply clues to ensure the safety of water sources.

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Section: High-throughput Illumina Sequencingmentioning

confidence: 99%

Characterization of antibiotic resistance genes in drinking water sources of the Douhe Reservoir, Tangshan, northern China: the correlation with bacterial communities and environmental factors

et al. 2022

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“…The wide distribution of species in Proteobacteria demonstrates the potential to decompose recalcitrant carbon sources for use, 70 showing that microorganisms using a K-strategy play an important role in driving the formation of a certain community structure, a slow and stable evolutionary progress. 71 For the dechlorinating bacterium Dechloromonas, its co-occurring genera in Sphingomonadaceae and Burkholderiaceae can degrade phenanthrene into simple organic matter as a substrate 72 or produce biological surfactants, 73 that can support degraders in mutualism. Other co-occurring Pseudogulbenkiania was reported to be dominant with Dechloromonas in a chlorinated paraffins contaminated groundwater plume, 74 which was identified as core microbiomes in this study, and Lysobacter exhibited a greater relative abundance in chlorinated systems.…”

Section: Discussionmentioning

confidence: 99%

“…The network analysis deciphered the potential microbial interaction including co-occurrence and co-exclusion patterns among microbiomes. The wide distribution of species in Proteobacteria demonstrates the potential to decompose recalcitrant carbon sources for use, showing that microorganisms using a K-strategy play an important role in driving the formation of a certain community structure, a slow and stable evolutionary progress . For the dechlorinating bacterium Dechloromonas , its co-occurring genera in Sphingomonadaceae and Burkholderiaceae can degrade phenanthrene into simple organic matter as a substrate or produce biological surfactants, that can support degraders in mutualism.…”

Section: Discussionmentioning

confidence: 99%

Investigating Biodegradation of 1,4-Dioxane by Groundwater and Soil Microbiomes: Insights into Microbial Ecology and Process Prediction

Miao,

Zhou,

Zheng

et al. 2023

ACS EST Water

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Although microorganisms play significant roles in bioremediation, their contributions to long-term site characteristics during and after active treatment need to be fully elucidated. This study described microbial ecology dynamics in 1,4-dioxane- and chlorinated solvents-contaminated groundwater in laboratory microcosms. Bioaugmented Pseudonocardia dioxanivorans CB1190 improved 1,4-dioxane removal, with increased carbohydrate and amino acid metabolism, but was eventually outcompeted by native microbes. The original microbiomes were perturbed and divergent but tended to be similar over time. Dechlorinating bacteria co-existed in the same niche, whereas CB1190 had more negative interactions in the shared niche. Multiple regression and classification machine learning models were built by using microbial taxa to predict the degradation process; the ensemble regression model provided most accurate prediction of 1,4-dioxane concentrations (R 2 = 0.81 ± 0.17). Among the classification models, the support vector machine performed the best in differentiating the contamination levels (accuracy at 0.67 ± 0.07, kappa at 0.56 ± 0.10). The ensemble model predicted the 1,4-dioxane concentrations and relative duration of contamination with independent microbial datasets from a field study, and the results aligned with the geographic and hydrological information from monitoring wells. This study introduces the application of machine learning in microbiome-based diagnostics for groundwater remediation and evaluation, providing valuable methods for future research and practice.

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“…It has been reported that members of the family Rhodobacteraceae possess five rRNA operons per cell, suggesting their potential of opportunistic lifestyles (r‐strategy) and rapid response to environmental changes (Goffredi and Orphan 2010); and members of the family Flavobacteriaceae contain a high proportion of genes hydrolyzing protein and glycoside (Zhang et al 2019), which are the main components of dissolved organic matter (DOM) released by growing phytoplankton. Meanwhile, some bacteria that usually grow slowly (k‐strategy) and have potential to use a wide spectrum of metabolites (especially complex compounds) increased (Seviour et al 2008; Ma et al 2021). For example, Actinomarinaceae and Rhodospirillaceae became the two most dominant bacterial families, with relative abundances rising from 4.3% to 13% and from 1.3% to 7.9%, respectively.…”

Section: Discussionmentioning

confidence: 99%

Terrestrial input of herbicides has significant impacts on phytoplankton and bacterioplankton communities in coastal waters

Yang

Mou

et al. 2021

Limnology & Oceanography

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Herbicide use has increased very rapidly worldwide in recent decades, and some of these herbicides eventually enter the ocean. At present, herbicide pollution in the ocean has become a global environmental problem. Here, in a field investigation of 22 commonly used herbicide residues (triazine, phenylurea, and amide) in the Bohai Sea and the Yellow Sea, we found that the detection rate of herbicide residues within 100 km from shore was 100%. Notably, triazine herbicides have reached concentrations (up to 12.07 nmol L À1 ) that can significantly disturb phytoplankton and bacterioplankton communities in microcosm experiments. Under exposure to triazine herbicides at close to their total in situ concentrations, the photosynthesis of the phytoplankton community was significantly inhibited, which was reflected by the significant decrease of F v /F m (28.7-63.8%) of the phytoplankton community and dissolved oxygen content (18.1-32.2%) in seawater. Concurrently, the phytoplankton community structure underwent significant changes with the dominant group shifting from diatoms to dinoflagellates, due to the higher atrazine sensitivity of diatoms compared to facultative dinoflagellates. Triazine herbicide also significantly altered the bacterioplankton community structure and inhibited their metabolism of many carbon sources including carbohydrates, amino acids, and carboxylic acids. As phytoplankton and bacterioplankton are closely related, the impact of herbicide on the bacterioplankton community was clearly aggravated by the phytoplankton community. In view of the significance of phytoplankton and bacterioplankton communities in supporting marine food webs and biogeochemical cycles, a continuous increase in herbicide input in the future may seriously affect the stability of coastal oceans.

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K-strategy species plays a pivotal role in the natural attenuation of petroleum hydrocarbon pollution in aquifers

Cited by 17 publications

References 69 publications

Characterization of antibiotic resistance genes in drinking water sources of the Douhe Reservoir, Tangshan, northern China: the correlation with bacterial communities and environmental factors

Characterization of antibiotic resistance genes in drinking water sources of the Douhe Reservoir, Tangshan, northern China: the correlation with bacterial communities and environmental factors

Investigating Biodegradation of 1,4-Dioxane by Groundwater and Soil Microbiomes: Insights into Microbial Ecology and Process Prediction

Terrestrial input of herbicides has significant impacts on phytoplankton and bacterioplankton communities in coastal waters

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