Resistance to and accumulation of heavy metals by actinobacteria isolated from abandoned mining areas

TheScientificWorldJournal
Soraia El BazBoujamâa Imziln

Abstract

Accumulation of high concentrations of heavy metals in environments can cause many human health risks and serious ecological problems. Nowadays, bioremediation using microorganisms is receiving much attention due to their good performance. The aim of this work is to investigate heavy metals resistance and bioaccumulation potential of actinobacteria strains isolated from some abandoned mining areas. Analysis of mining residues revealed that high concentration of zinc "Zn" was recorded in Sidi Bouatman, Arbar, and Bir Nhass mining residues. The highest concentration of lead "Pb" was found in Sidi Bouatman. Copper "Cu," cadmium "Cd," and chromium "Cr" were found with moderate and low concentrations. The resistance of 59 isolated actinobacteria to the five heavy metals was also determined. Using molecular identification 16S rRNA, these 27 isolates were found to belong to Streptomyces and Amycolatopsis genera. The results showed different levels of heavy metal resistance; the minimum inhibitory concentration (MIC) recorded was 0.55 for Pb, 0.15 for Cr, and 0.10 mg·mL(-1) for both Zn and Cu. Chemical precipitation assay of heavy metals using hydrogen sulfide technic (H2S) revealed that only 27 isolates have a strong ability to accumu...Continue Reading

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Citations

Oct 30, 2016·International Journal of Environmental Research and Public Health·Muibat Omotola FasholaOlubukola Oluranti Babalola
Jul 3, 2018·Journal of Basic Microbiology·Khalid Salah El Dein Abdel-LateifMohamed M Shohayeb
Oct 2, 2020·International Journal of Environmental Research and Public Health·Jiejie YangLuhua Jiang
Mar 8, 2019·The Science of the Total Environment·Marcelle C CordeiroFabiano L Thompson
Mar 28, 2021·Environmental Monitoring and Assessment·Abdelkhalek El AlaouiKhalid Oufdou
Apr 4, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Zhiqiang SongShaohua Wu
Apr 17, 2021·Bulletin of Environmental Contamination and Toxicology·Ali Asger BhojiyaDevendra Jain
Jun 15, 2021·Frontiers in Microbiology·Paloma LaraKaty Juárez
Jul 3, 2021·Marine Drugs·Sveta V JagannathanWilliam Soto
Aug 28, 2021·Microorganisms·Michaela CimermanovaMaria Piknova

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Methods Mentioned

BETA
PCR

Software Mentioned

MEGA

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