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Bioaccumulation of Heavy Metals by Metal-Resistant Bacteria Isolated from Tagetes minuta Rhizosphere, Growing in Soil Adjoining Automobile Workshops

Bioaccumulation of Heavy Metals by Metal-Resistant Bacteria Isolated from Tagetes minuta Rhizosphere, Growing in Soil Adjoining Automobile Workshops

Kulsoom Akhter1, Tahseen Ghous1,2,Saiqa Andleeb3,*, Faiz-ul-Hassan Nasim4, Samina Ejaz5, Zain-ul-Abdin1, Bilal Ahmed Khan1 and Muhammed Naeem Ahmed1

1Department of Chemistry, The University of Azad Jammu and Kashmir, Muzaffarabad, Pakistan
2Department of Chemistry, Mirpur University of Science and Technology (MUST), Mirpur-10250, Azad Jammu and Kashmir, Pakistan Pakistan
 

3Department of Zoology, The University of Azad Jammu and Kashmir, Muzaffarabad, Pakistan 

 

4Department of Chemistry, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
5Department of Biochemistry and Biotechnology, The Islamia University of Bahawalpur, Bahawalpur, Pakistan

*      Corresponding author: drsaiqa@gmail.com

ABSTRACT

The present study deals with isolation, identification and characterization of some indigenous heavy metal resistant bacteria isolated from rhizosphere of Tagetes minuta, growing in soil adjoining automobile workshops to investigate their bioaccumulation capacity for three selected metals Cr(VI), Ni(II) and Cd(II). The plant was selected due to its natural abundance in the climate of Kashmir and also in the area of study. On the basis of morphological, biochemical, 16S rRNA gene sequencing, the isolates were identified as B. cereus BDBC01, B. cereus AVP12 and B. cereus NC7401. At maximum studied concentration of metal ions (250 mgl-1), in above sequence, the strains accumulated 118.2, 121.87 and 90 mg/g Cr (VI), 135, 127.5 and 146.25 mg/g Ni (II) and 120, 129.37, 135 mg/g Cd(II). Langmuir and Freundlich models were applied and found suitable to describe biosorption of selected metals by the isolated strains.
 

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Pakistan Journal of Zoology (Associated Journals)

October

Vol. 49, Iss. 5, Pages 1547-1936

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