Cr-induced cellular injury and necrosis in Glycine max L.: Biochemical mechanism of oxidative damage in chloroplast.

Chromium-induced toxicity and mechanisms of cell death involved in plants are yet to be fully elucidated. To understand the events of these processes, the stress response of the soybean plant using trivalent and hexavalent chromium compounds, namely, basic chromium sulphate (BCS) and potassium dichromate (KCrO) was investigated. The leaf surface morphology for stomatal aperture, wax deposition and presence of trichomes for chromium accumulation was examined by SEM-EDAX and light microscopy.

Inducible chromate reductase exhibiting extracellular activity in Bacillus methylotrophicus for chromium bioremediation.

Chromium toxicity is one of the major causes of environmental pollution due to its heavy discharge in industrial wastewaters. Chromate reduction is a viable method to detoxify hexavalent chromium to nontoxic trivalent species mediated by enzymes and metabolites. A new Bacillus methylotrophicus strain was isolated from tannery sludge and was an efficient candidate for chromate reduction.

Phytosynthesis of silver nanoparticles using Coccinia grandis leaf extract and its application in the photocatalytic degradation.

Silver nanoparticles were successfully synthesized from aqueous AgNO(3) through a simple green route using the leaf extract of Coccinia grandis as a reducing as well as capping agent. The results obtained from UV-vis spectrum, X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and Fourier-transform infra red spectroscopy (FTIR) and high-resolution transmission electron microscopy (HRTEM) revealed that the biosynthesis of silver nanoparticles were in the size range of 20-30 nm and is crystallized in face centered cubic symmetry. Further, the thermal stability of nanoparticles was studied using thermo gravimetric analyzer (TGA) and differential scanning calorimeter (DSC).