Metal Response in Cupriavidus metallidurans

Vandenbussche, Guy; Mergeay, Max

doi:10.1007/978-3-319-20594-6

Cited by 16 publications

(1 citation statement)

References 209 publications

(338 reference statements)

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“…Furthermore, the presence of phosphate in the soil groundwater could shift bacterial resistance mechanisms more towards intra-and/or extracellular phosphate mediated complexation resulting in the precipitation and immobilization of metals and radionuclides. Although phosphate mediated complexation has been shown for Cd 2+ , Zn 2+ and several other metals and radionuclides (Basnakova et al, 1998;Andrade et al, 2004;Renninger et al, 2004;Zeng et al, 2020), the best known Ni 2+ resistance mechanism is efflux-mediated resistance (López-Maury et al, 2002;Nies, 2003;Mergeay and Van Houdt, 2015). Nevertheless, our experimental setup did not allow to interpret the individual effect of total phosphor or phosphate on the microbial community and thus no clear impact was observed.…”

Section: Functional Changes Within the Microbial Communitymentioning

confidence: 89%

Soil microbial community structure and functionality changes in response to long‐term metal and radionuclide pollution

Rogiers

Claesen

Gompel

et al. 2021

Environmental Microbiology

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Microbial communities are essential for a healthy soil ecosystem. Metals and radionuclides can exert a persistent pressure on the soil microbial community. However, little is known on the effect of long-term cocontamination of metals and radionuclides on the microbial community structure and functionality. We investigated the impact of historical discharges of the phosphate and nuclear industry on the microbial community in the Grote Nete river basin in Belgium. Eight locations were sampled along a transect to the river edge and one location further in the field. Chemical analysis demonstrated a metal and radionuclide contamination gradient and revealed a distinct clustering of the locations based on all metadata. Moreover, a relation between the chemical parameters and the bacterial community structure was demonstrated. Although no difference in biomass was observed between locations, cultivation-dependent experiments showed that communities from contaminated locations survived better on singular metals than communities from control locations. Furthermore, nitrification, a key soil ecosystem process seemed affected in contaminated locations when combining metadata with microbial profiling. These results indicate that long-term metal and radionuclide pollution impacts the microbial community structure and functionality and provides important fundamental insights into microbial community dynamics in co-metalradionuclide contaminated sites.

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Section: Functional Changes Within the Microbial Communitymentioning

confidence: 89%

Soil microbial community structure and functionality changes in response to long‐term metal and radionuclide pollution

Rogiers

Claesen

Gompel

et al. 2021

Environmental Microbiology

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A Study in Blue: Secondary Copper-rich Minerals and Their Associated Bacterial Diversity in Icelandic Lava Tubes

Kopacz

Csuka

Baqué

et al. 2022

Preprint

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Cave environments on Earth have long provided shelter to a variety of organisms, from microbes to humans. Though their scales of interest differ vastly, these two examples have sought the same comfort from caves: a stable and sheltered environment, protected from the woes of the surface world. Since the discovery of lava caves on Mars (see Sauro et al., 2020 for a review), they have become of renewed interest as targets for human shelter in future missions, as well as areas of astrobiological interest, with the potential of harboring traces of extant or extinct extraterrestrial life.

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Aerobic release of arsenic and antimony from mine soils by biostimulation of indigenous microbial activity and bioaugmentation with Cupriavidus genera of bacteria

Horváthová,

Schwarzkopfová,

Vojtková

et al. 2023

Plant Soil

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Background and Aims Bioremediation of soils contaminated with metal(loid)s is an attractive research area due to its sustainability and economic benefits. In the Slovak Republic, there are several abandoned mines containing high concentrations of arsenic (As) and antimony (Sb). This calls for new options for removing these hazardous metalloids from contaminated substrates. Studies on bioleaching of soils co-contaminated with both metalloids are very rare. This study aimed to test the effectiveness of bioleaching of soils heavily co-contaminated with As and Sb (up to 1463 mg.kg–1 and 5825 mg.kg–1, respectively) at a former stibnite mining site (Poproč, eastern Slovakia) through biostimulation and bioaugmentation. Methods Bioleaching of As and Sb from four soils was induced by biostimulation of autochthonous microflora with Sabouraud medium (SAB) and SAB+glucose, and bioaugmentation of the soil with bacterial strains Cupriavidus oxalaticus and Cupriavidus metallidurans. Soil samples were subjected to determination of physico-chemical properties, microbiological parameters, and additional mineralogical analysis. Results An inverse relationship between the total metalloid concentration and the microbial diversity was confirmed. In experiments with Cupriavidus metallidurans and Cupriavidus oxalaticus, mean bioleached As fractions were 37.6% and 41.3%, while Sb bioleaching was significantly lower, ranging between 17.0–26.2%. The mean bioleached fraction of As and Sb using SAB was 40.7% and 14.4%, respectively. The addition of glucose to SAB increased As bioleaching (50.7%) but not that of Sb. Conclusion Collectively, the results highlighted a role of microorganisms in the mobility of metalloids in soils with their prospective applications in remediation of contaminated sites.

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Metal Response in Cupriavidus metallidurans

Cited by 16 publications

References 209 publications

Soil microbial community structure and functionality changes in response to long‐term metal and radionuclide pollution

Soil microbial community structure and functionality changes in response to long‐term metal and radionuclide pollution

A Study in Blue: Secondary Copper-rich Minerals and Their Associated Bacterial Diversity in Icelandic Lava Tubes

Aerobic release of arsenic and antimony from mine soils by biostimulation of indigenous microbial activity and bioaugmentation with Cupriavidus genera of bacteria

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