More than 100 million individuals worldwide are exposed to arsenic-contaminated water, making the investigation of arsenic mobility in aquatic systems of utmost importance. Iron (hydr)oxides play a key role in preventing arsenic release in aquifers and soils due to their strong arsenic sorption and are even used to remove arsenic in water treatment. Neutrophilic Fe(II)-oxidizing bacteria produc...

Phosphorus is an essential nutrient, which is limited in most soils. The P solubilization and growth enhancement ability of seven arsenic-resistant bacteria (ARB), which were isolated from arsenic hyperaccumulator Pteris vittata, was investigated. Siderophore-producing ARB (PG4, 5, 6, 9, 10, 12 and 16) were effective in solubilizing P from inorganic minerals FePO4 and phosphate rock, and organi...

The present study proposed the isolation of arsenic resistant bacteria from wastewater. Only three bacterial isolates (MNZ1, MNZ4 and MNZ6) were able to grow in high concentrations of arsenic. The minimum inhibitory concentrations of arsenic against MNZ1, MNZ4 and MNZ6 were 300 mg/L, 300 mg/L and 370 mg/L respectively. The isolated strains showed maximum growth at 37 °C and at 7.0 pH in control...

In middle Gangetic plain, high arsenic concentration is present in water, which causes a significant health risk. Total 48 morphologically distinct arsenite resistant bacteria were isolated from middle Gangetic plain. The minimum inhibitory concentration (MIC) values of arsenite varied widely in the range 1-15 mM of the isolates. On the basis of their MIC, two isolates, AK1 (KY569423) and AK9 (...

Arsenate [As(V)]-respiring bacteria affect the speciation and mobilization of arsenic in the environment. This can lead to arsenic contamination of drinking water supplies and deleterious consequences for human health. Using molecular genetics, we show that the functional gene for As(V) respiration, arrA, is highly conserved; that it is required for As(V) reduction to arsenite when arsenic is s...

The problem of arsenic (As) pollution being severe warrants opting for low-cost microbial remediation strategies. present study identifying suitable bacterial strains led to the isolation eleven As-tolerant from As-contaminated rhizosphere soils West Bengal, India. They were found oxidize/reduce 55–31.6% 5 mM As(III) and 73–37.6% As(V) within 12 h. four isolates (BcAl-1, JN 73, LAR-2, AR-30) ha...

Thirty four arsenic resistant bacterial strains were isolated from the soil samples of Khulna Shipyard. They by growing them on nutrient broth medium containing 5 mgl-1 arsenic. From them, five finally selected, and studied their morphological, biochemical ecological characters in details. identified as Bacillus lichenifomis, polymyxa, Listeria murrayi, Moraxella urethralis Planococcus citreus....

Arsenic trioxide has been used as a therapeutic agent for acute promyelocytic leukemia and recently for some solid tumors. Although arsenic trioxide has been shown to significantly inhibit the growth of solid tumor cells in vitro, clinical trials indicate that arsenic trioxide alone is pool active against non-hematologic malignant diseases. To understand the mechanisms of arsenic resistance in ...