5.3. Xenobiotic Trace Metals and Materials 4804 5.3.1. Toxicology of Heavy Metals 4804 5.3.2. Nanoparticle Applications 4810 5.4. Environmental Metal Speciation 4812 5.4.1. Bacteria 4812 5.4.2. Aquatic Organisms 4812 6. Mass Spectrometry Imaging Techniques 4813 6.1. Secondary Ion Mass Spectrometry (SIMS) 4813 6.1.1. Metal Ion Distribution in Chromosomes 4813 6.1.2. Subcellular Distribution of M...

introduction because of population growth, human needs to produce raw materials have increased. different industries have developed that discharge pollutants into the environment. one type of the contaminants is heavy metals that are abundant in municipal and industrial waste waters. these compounds aren’t capable of biological degradation and in certain quantities are considered toxic to many ...

Heavy metal pollution of soils is of great concern. The presence of the toxic metal species above critical concentration not only harmfully affects human health but also the environment. Among existing strategies to remediate metal contaminates in soils, phytoremediation approach using metal accumulating plants is much convincing in terms of metal removal efficiency, but it has many limitations...

This study is aimed to assess the biodegradation of sulfadiazine (SDZ) and characterization of heavy metal resistance in three pure bacterial cultures and also their chemotactic response towards 2-aminopyrimidine. The bacterial cultures were isolated from pig manure, activated sludge and sediment samples, by enrichment technique on SDZ (6 mg L-1). Based on the 16S rRNA gene sequence analysis, t...

Endophytic bacteria have received attention for their ability to promote plant growth and enhance phytoremediation, which may be attributed to their ability to produce indole-3-acetic acid (IAA). As a signal molecular, IAA plays a key role on the interaction of plant and its endomicrobes. However, the different effects that endophytic bacteria and IAA may have on plant growth and heavy metal up...

In biosciences and biotechnology, the expanding application of physicochemical approaches using modern instrumental techniques is an efficient strategy to obtain valuable and often unique information at the molecular level. In this work, we applied a combination of vibrational (Fourier transform infrared (FTIR), FT-Raman) spectroscopic techniques, useful in overall structural and compositional ...

Marine environment is exposed to various pollutants such as heavy metals, pesticides, and antibiotics. Bacterial resistance these a global problem all over the world. In this study, Mediterranean mussel (Mytilus galloprovincialis) sea snail (Rapana venosa) were collected from 12 sampling points Artvin, Rize, Trabzon, Giresun Coasts of Black Sea, Turkey. A total 54 Escherichia coli isolated test...

A Pseudomonas fluorescens strain ZY2, isolated from swine wastewater, was used to investigate the synergistic effects of five heavy metals (Pb, Cu, Zn, Cr(VI) and Hg) on bacterial resistance to antibiotics. Results indicate that the combined effects of antibiotic type, heavy metal type and concentration were significant (p < 0.01). Cross-resistance to Hg and antibiotics was the most noticeable....

Increasing drug-resistant infections have drawn research interest towards examining environmental bacteria and the discovery that many factors, including elevated metal conditions, contribute to proliferation of antibiotic resistance (AR). This study examined 90 garden soils from Western Australia to evaluate predictions of antibiotic resistance genes from total metal conditions by comparing th...