Response of soil microbial communities to natural radionuclides along specific-activity gradients

Feng, Guangwen; Yong, Jinlong; Liu, Qian; Chen, Henglei; Mao, Peihong

doi:10.1016/j.ecoenv.2022.114156

Cited by 8 publications

(7 citation statements)

References 65 publications

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“…However, there are exceptions. Thus, in studies of the bacterial communities of soils technogenically contaminated with U and HMs [84] and soils with increased natural radioactivity ( 238 U, 232 Th, and 40 K) [15], no statistically significant changes in diversity were found in areas with different RN or HM concentrations in the soil. Significant changes in the taxonomic composition of bacterial communities at the phylum level are usually not recorded; however, statistically significant rearrangements at the level of lower taxa that are already adapted to live in an RN environment are common ( [15,20,80,82,83] and others from Table 1).…”

Section: Soils With Enhanced Levels Of Naturally Occurring Radionucli...mentioning

confidence: 93%

“…Table 1 provides a summary of studies conducted from 1996 to 2024, focusing on the impact of radioactive soil contamination and external gamma irradiation on bacterial diversity [15,19,20,[25][26][27]29,30,34,35,. Particular studies are discussed below in the correspondent sections.…”

Section: Taxonomic Diversity and Structure Of Soil Communities After ...mentioning

confidence: 99%

“…Most available studies have focused on the state of microbial communities under the influence of elevated concentrations of naturally occurring radionuclides, which have entered the soil due to uranium mining and the disposal of uranium industry waste [19,[67][68][69][70][71][72][74][75][76][77]79,81,84]. Much less research has been dedicated to the effect of exclusively natural soil radioactivity on bacterial communities [15,73,86,88], the consequences of nuclear industry plant [85,87] and oil extraction activities [35,78], as well as the results of laboratory experiments with the introduction of radioactive substances or materials containing uranium isotopes into the soil [90].…”

Section: Soils With Enhanced Levels Of Naturally Occurring Radionucli...mentioning

confidence: 99%

“…Frequently, bacteria capable of changing the degree of the oxidation of elements dominate the composition of communities in contaminated territories (Table S1), for example, iron-reducing [73,80], capable of U(VI) reduction [73,80], and sulfate-reducing bacteria [80,128]. In a contaminated environment, bacteria that produce [82] and are resistant to antibiotics [15,79] and metals [15,79] thrive, as well as some halophytes [15,79]. As a result, in territories with elevated levels of naturally occurring radionuclides, Acidithiobacillus ferrooxidans and several Pseudomonas species have an advantage [67,68,70,83,84,86].…”

Section: Soils With Enhanced Levels Of Naturally Occurring Radionucli...mentioning

confidence: 99%

“…Soils in various regions exhibit elevated concentrations of radionuclides (RNs) due to both the natural conditions and anthropogenic activities, posing a potential hazard to living organisms. The causes of radioactive contamination can be attributed to several factors: areas with increased natural radioactivity [12][13][14][15][16], technologically enhanced natural radioactivity [17][18][19][20][21][22][23][24][25], radiation accidents [26][27][28][29], nuclear tests [30][31][32][33], and oil pollution [34][35][36][37][38].…”

Section: Introductionmentioning

confidence: 99%

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Taxonomic Diversity and Functional Traits of Soil Bacterial Communities under Radioactive Contamination: A Review

Belykh,

Maystrenko,

Velegzhaninov

et al. 2024

Microorganisms

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Studies investigating the taxonomic diversity and structure of soil bacteria in areas with enhanced radioactive backgrounds have been ongoing for three decades. An analysis of data published from 1996 to 2024 reveals changes in the taxonomic structure of radioactively contaminated soils compared to the reference, showing that these changes are not exclusively dependent on contamination rates or pollutant compositions. High levels of radioactive exposure from external irradiation and a high radionuclide content lead to a decrease in the alpha diversity of soil bacterial communities, both in laboratory settings and environmental conditions. The effects of low or moderate exposure are not consistently pronounced or unidirectional. Functional differences among taxonomic groups that dominate in contaminated soil indicate a variety of adaptation strategies. Bacteria identified as multiple-stress tolerant; exhibiting tolerance to metals and antibiotics; producing antioxidant enzymes, low-molecular antioxidants, and radioprotectors; participating in redox reactions; and possessing thermophilic characteristics play a significant role. Changes in the taxonomic and functional structure, resulting from increased soil radionuclide content, are influenced by the combined effects of ionizing radiation, the chemical toxicity of radionuclides and co-contaminants, as well as the physical and chemical properties of the soil and the initial bacterial community composition. Currently, the quantification of the differential contributions of these factors based on the existing published studies presents a challenge.

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Section: Soils With Enhanced Levels Of Naturally Occurring Radionucli...mentioning

confidence: 93%

Section: Taxonomic Diversity and Structure Of Soil Communities After ...mentioning

confidence: 99%

Section: Soils With Enhanced Levels Of Naturally Occurring Radionucli...mentioning

confidence: 99%

Section: Soils With Enhanced Levels Of Naturally Occurring Radionucli...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Taxonomic Diversity and Functional Traits of Soil Bacterial Communities under Radioactive Contamination: A Review

Belykh,

Maystrenko,

Velegzhaninov

et al. 2024

Microorganisms

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Response of Microbial Communities to Naturally Occurring Radioactive Material–Contaminated Sediments: A Microcosm‐Based Study

MacIntosh,

Dafforn,

Chariton

et al. 2024

Enviro Toxic and Chemistry

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There is a growing need to understand the potential ecological impacts of contaminants in offshore oil and gas infrastructure, especially if that infrastructure is to be left in situ as a decommissioning option. Naturally occurring radioactive material (NORM) is one type of contaminant found in solid deposits on internal surfaces of infrastructure that poses potential ecological harm if released into the marine environment. Microbes are important components of marine sediment ecosystems because they provide ecosystem services, yet the impacts of NORM contamination to these communities are not well understood. The present study aimed to investigate the response of benthic microbial communities to NORM‐contaminated scale, collected from an offshore oil and gas system, via controlled laboratory microcosm studies. Changes to microbial communities in natural sediment and sediments spiked with NORM at radium‐226 activity concentrations ranging from 9.5 to 59.8 Bq/kg (in partial equilibria with progeny) over 7 and 28 days were investigated using high‐throughput sequencing of environmental DNA extracted from experimental sediments. There were no significant differences in microbial community composition between control and scale‐spiked sediments over 7 and 28 days. However, we observed a greater presence of Firmicutes in the scale‐mixed treatment and Chloroflexi in the scale‐surface treatments after 28 days. This could suggest selection for species with contaminant tolerance or potential resilience to radiation and metal toxicity. Further research is needed to explore microbial tolerance mechanisms and their potential as indicators of effects of radionuclide‐contaminated sediments. The present study demonstrated that microcosm studies can provide valuable insights about the potential impacts of contamination from oil and gas infrastructure to sediment microbial communities. Environ Toxicol Chem 2024;00:1–14. © 2024 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.

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Bioremediation of uranium (Ⅵ) using a native strain Halomonas campaniensis ZFSY-04 isolated from uranium mining and milling effluent: Potential and mechanism

Feng,

Mao,

Xie

et al. 2024

Chemosphere

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Response of soil microbial communities to natural radionuclides along specific-activity gradients

Cited by 8 publications

References 65 publications

Taxonomic Diversity and Functional Traits of Soil Bacterial Communities under Radioactive Contamination: A Review

Taxonomic Diversity and Functional Traits of Soil Bacterial Communities under Radioactive Contamination: A Review

Response of Microbial Communities to Naturally Occurring Radioactive Material–Contaminated Sediments: A Microcosm‐Based Study

Bioremediation of uranium (Ⅵ) using a native strain Halomonas campaniensis ZFSY-04 isolated from uranium mining and milling effluent: Potential and mechanism

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