Arsenic pollution and arsenic-resistant bacteria of drying Urmia Salt Lake

Extensive arsenic contamination of groundwater, rivers, and agricultural farms has led to widespread poisoning consequent problems associated with health economy. In recent years, many studies have been performed understand bacterial detoxification metabolism which paved the way for bioremediation applications. This study attempted isolate characterize arsenic-resistant bacteria from drying Urmia lake. As a result 16S rDNA analysis, six strains were identified as members Shouchella , Salipaludibacillus Evansella genera. For some strains, maximum tolerance concentration either arsenate or arsenite was considerably high, 320 16 mM, respectively. All harbored reductase gene ( arsC ). The permease arsB ) in all except S1, S12, E15. metabolic genes respiratory arrB oxidase arxA none these strains. feature region can be exploited bioremediate contaminated areas by using two-step process. second step carried out adsorption iron oxide precipitation sulfide. Today, more ecosystems are being destroyed due anthropogenic pollution, it is important reveal negative effects solutions this situation on ecosystems. So, current provides potential source such that implement practices prevent catastrophe vicinal territories, reveals pollution