Publications by authors named "Marina Robas"

Article Synopsis
  • Influenza virus infection impacts both lung and gut bacteria, but most studies only look at the composition of these microbiota.
  • During influenza A virus (IAV) infection, the gut microbiome decreases and loses the ability to metabolize certain nutrients in oxygen-rich environments.
  • There is also an increase in resistance to important antibiotics, which could complicate treatment strategies for infections involving multiple bacteria.
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Article Synopsis
  • Soil contamination by mercury (Hg) poses significant risks to the environment, wildlife, and human health, primarily affecting the central nervous system through biomagnification in the food chain.
  • This study analyzed microbial communities in the mining region of Almadén, Spain, using Shotgun metagenomics to compare rhizospheric and bulk soils, revealing distinct microbial compositions influenced by plant roots.
  • Functional analyses indicated that microbial communities exhibit co-selection for mercury and antibiotic resistance mechanisms, suggesting that Hg-contaminated environments could serve as reservoirs for harmful resistance traits.
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Heavy metal pollution of soil, particularly by mercury (Hg), is a problem that can seriously affect the environment and human health. For this reason, it is necessary to take steps to remediate these environments, prevent potential adverse effects, and restore these areas for subsequent use in agriculture, industry, ranching, and forestry. The present study has selected 40 bacterial strains from rhizosphere and bulk soil that grow naturally in high Hg-contaminated soils from the Almadén mining district in Ciudad Real, Spain.

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Antibiotic resistance (AR) in the environment is of great global concern and a threat to public health. Soil bacteria, including Bacillus spp., could act as recipients and reservoirs of AR genes of clinical, livestock, or agricultural origin.

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Soil pollution from heavy metals, especially mercury, is an environmental problem for human health. Biological approaches offer interesting tools, which necessarily involve the selection of organisms capable of transforming the environment via bioremediation. To evaluate the potential use of microorganisms in phytorhizoremediation, bacterial strains were isolated from rhizospheric and bulk soil under conditions of chronic natural mercury, which were identified and characterized by studying the following: (i) their plant growth promoting rhizobacteria (PGPR) activities; and (ii) their maximum bactericide concentration of mercury.

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