title: Comparative performance evaluation of multi-metal resistant fungal strains for simultaneous removal of multiple hazardous metals.
abstract: In the present study, five fungal strains viz., Aspergillus terreus AML02, Paecilomyces fumosoroseus 4099, Beauveria bassiana 4580, Aspergillus terreus PD-17, Aspergillus fumigatus PD-18, were screened for simultaneous multimetal removal. Highest metal tolerance index for each individual metal viz., Cd, Cr, Cu, Ni, Pb and Zn (500mg/L) was recorded for A. fumigatus for the metals (Cd, 0.72; Cu, 0.72; Pb, 1.02; Zn, 0.94) followed by B. bassiana for the metals (Cd, 0.56; Cu, 0.14; Ni, 0.29; Zn, 0.85). Next, the strains were exposed to multiple metal mixture (Cd, Cr, Cu, Ni, Pb and Zn) of various concentrations (6, 12, 18, 30mg/L). Compared to other strains, B. bassiana and A. fumigatus had higher cube root growth (k) constants indicating their better adaptability to multi metal stress. After 72h, multimetal accumulation potential of B. bassiana (26.94±0.07mg/L) and A. fumigatus (27.59±0.09mg/L) were higher than the other strains at initial multimetal concentration of 30mg/L. However, considering the post treatment concentrations of individual metals in multimetal mixture (at all the tested concentrations), A. fumigatus demonstrated exceptional performance and could bring down the concentrations of Cd, Cu, Ni, Pb and Zn below the threshold level for irrigation prescribed by Food and Agriculture Organization (FAO).
authors: Applied Microbiology Lab, Centre for Rural Development and Technology, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi 110016, India; Helmholtz - Centre for Environmental Research - UFZ, Department of Molecular Systems Biology, Permoserstr. 15, 04318 Leipzig, Germany.
authors: Priyadarshini
authors: P
authors: Dey
authors: Applied Microbiology Lab, Centre for Rural Development and Technology, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi 110016, India.
authors: Deepak
authors: D
authors: Gola
authors: Applied Microbiology Lab, Centre for Rural Development and Technology, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi 110016, India.
authors: Abhishek
authors: A
authors: Mishra
authors: Applied Microbiology Lab, Centre for Rural Development and Technology, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi 110016, India. Electronic address: anushree@rdat.iitd.ac.in.
authors: Anushree
authors: A
authors: Malik
authors: Applied Microbiology Lab, Centre for Rural Development and Technology, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi 110016, India.
authors: Peeyush
authors: P
authors: Kumar
authors: Department of Zoology, University of Delhi, New Delhi 110007, India.
authors: Dileep Kumar
authors: DK
authors: Singh
authors: Water Technology Centre, Indian Agricultural Research Institute, New Delhi 110012, India.
authors: Neelam
authors: N
authors: Patel
authors: Helmholtz - Centre for Environmental Research - UFZ, Department of Molecular Systems Biology, Permoserstr. 15, 04318 Leipzig, Germany; Department of Functional Proteomics, University of Leipzig, 04109 Leipzig, Germany.
authors: Martin
authors: M
authors: von Bergen
authors: Helmholtz - Centre for Environmental Research - UFZ, Department of Molecular Systems Biology, Permoserstr. 15, 04318 Leipzig, Germany.
authors: Nico
authors: N
authors: Jehmlich
mesh_terms: D001230:Aspergillus / Q000378:metabolism; D052982:Beauveria / Q000378:metabolism; D003470:Culture Media; D025141:Drug Resistance, Fungal; D005658:Fungi / Q000235:genetics / Q000378:metabolism*; D005947:Glucose / Q000378:metabolism; D015386:Hazardous Substances / Q000302:isolation & purification* / Q000633:toxicity*; D008670:Metals / Q000302:isolation & purification* / Q000633:toxicity*; D019216:Metals, Heavy / Q000302:isolation & purification / Q000633:toxicity; D010143:Paecilomyces / Q000378:metabolism
chemical_list: D003470:Culture Media; D015386:Hazardous Substances; D008670:Metals; D019216:Metals, Heavy; D005947:Glucose
keywords: Bioaccumulation; Cube root kinetics; Multimetal; Tolerance index