ArticleInternational microbiology : the official journal of the Spanish Society for Microbiology2025
Resistance to heavy metals and chromium reduction by bacteria isolated from air.
Article in International microbiology : the official journal of the Spanish Society for Microbiology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
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Who cites it
1 citing paper in PubMed.
- Integrated hydrochar-bacteria strategy for heavy metal removal.Frontiers in microbiology · 2026Review
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Environmental pollution by heavy metals is a major global concern, necessitating the exploration of sustainable bioremediation strategies. Airborne bacteria represent an underexplored resource in this context. This study investigated the potential of bacteria isolated from bioaerosols for the bioremediation of heavy metals. Nine bacterial strains belonging to the genera Exiguobacterium, Kocuria, Rhodococcus, and Staphylococcus were isolated and identified through MaLDI-TOF analysis and 16S rRNA gene sequencing. The minimum inhibitory concentrations (MIC) of chromium, copper, lead, nickel, mercury, and cadmium were determined to evaluate metal resistance. Bioreduction assays were performed to determine the capacity of selected strains to reduce hexavalent chromium [Cr(VI)] in solution. Chromate reductase activity was quantified in Rhodococcus rhodochrous As33. Morphological responses to chromium exposure were examined using scanning and transmission electron microscopy (SEM and TEM). MIC analyses revealed variable but significant resistance to multiple Heavy metals among the isolates. Bioreduction assays demonstrated that five selected strains reduced from 79.9% to 100% of Cr(VI) within 72 h. R. rhodochrous As33 achieved complete Cr(VI) reduction, as confirmed by 1,5-diphenylcarbazide complexation, and inductively coupled plasma mass spectrometry (ICP-MS). Enzymatic analysis indicated a chromate reductase activity of 67.87 U mg⁻
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