Screening, Identification of Fungi with High Cadmium-Resistance and its Solubilization Capacity of Insoluble Phosphates
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    Abstract:

    A fungus with high cadmium resistance was isolated from the soil polluted by e-waste primitive recycling activity by adding definite concentration of Cd (200 mg/L) as 3CdSO4·8H2O in the medium. The fungus belonged to Cochliobolus lunatus according to ITS rDNA sequences. This strain was able to grow well on PDA plate containing 2 000 mg/L Cd2+, and its cadmium resistance might be ascribed to the production of alkaline materials during its growth. Apart from Cd2+, this stain could tolerate Pb2+, Zn2+ and Cu2+ efficiently as well. The resistance decreased in the order of Zn2+, Cd2+>Pb2+>Cu2+>Co2+>Ni2+, Cr2+>Hg2+, Ag+. This strain could grow in the liquid medium with three different inorganic phosphates, and the phosphate solubilization capacity was in the order of Ca3(PO4)2(104 mg/L)>AlPO4 (86 mg/L)>FePO4·4 H2O (17 mg/L).

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FENG Hong, LI Yongtao, ZHANG Gan, LUO Chunling. Screening, Identification of Fungi with High Cadmium-Resistance and its Solubilization Capacity of Insoluble Phosphates[J]. Journal of South China Agricultural University,2013,34(2):177-181

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History
  • Received:September 09,2012
  • Revised:
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  • Online: April 19,2013
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