Publications by authors named "J Chorover"

The widespread presence of per- and polyfluoroalkyl substances (PFAS) in the environment, driven by extensive industrial use, has raised global concerns due to their persistence and adverse health effects. Despite the increased regulatory focus on a sub-set of well-known PFAS, over 12,000 compounds exist, many poorly characterized. Our study assessed hidden PFAS concentrations, undetectable by standard LC-MS/MS analysis, in contaminated groundwater.

View Article and Find Full Text PDF

The importance of biota to soil formation and landscape development is widely recognized. As biotic complexity increases during early succession via colonization by soil microbes followed by vascular plants, effects of biota on mineral weathering and soil formation become more complex. Knowledge of the interactions among groups of organisms and environmental conditions will enable us to better understand landscape evolution.

View Article and Find Full Text PDF

Vanadium(V) contaminated soil is abundant in iron(Fe) oxides due to co-occurrence of V and Fe bearing minerals. However, biogeochemical transformation of redox-active V and Fe in soil, and the bacteria involved, has remained less investigated. This study explored the extent to which microbial mediated organic decomposition coupled to Fe(III) reduction contributed to V(V) release/reduction in V-contaminated paddy soil under different organic amendments.

View Article and Find Full Text PDF
Article Synopsis
  • Bacterial strain Cupriavidus metallidurans BS1 exhibits distinct responses to silver nanoparticles (AgNPs) and dissolved silver, with higher toxicity from dissolved Ag than from smaller AgNPs.
  • The exposure to silver stress triggers the expression of genes responsible for synthesizing extracellular polymeric substances (EPS), which helps the bacteria cope with Ag toxicity by altering their chemical composition.
  • Key resistance genes involved in efflux systems and ATPase production are significantly activated in response to different forms of silver, illustrating how this strain develops varied defenses against silver-based antimicrobial treatments.
View Article and Find Full Text PDF

Arsenic (As) mobilization in paddy fields poses significant health risks, necessitating a thorough understanding of the controlling factors and mechanisms to safeguard human health. We conducted a comprehensive investigation of the soil-porewater-rice system throughout the rice life cycle, focusing on monitoring arsenic distribution and porewater characteristics in typical paddy field plots. Soil pH ranged from 4.

View Article and Find Full Text PDF