| Autor: |
Choudhary, Shipra, Singh, Harjeet, Charaya, M. U. |
| Předmět: |
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| Zdroj: |
Bulletin of Pure & Applied Sciences-Botany; Jul-Dec2017, Vol. 36B Issue 2, p53-63, 11p |
| Abstrakt: |
Investigations were conducted on the experimental fields of CCS University (Meerut) to evaluate the influence of Pb contamination on soil mycobiota and to obtain some Pb-resistant strains for the management of Pb contaminated soils and of the effluents carrying the metal. Blocks (30cm × 30cm) each were treated with different concentrations (500 ppm/1000 ppm/2000 ppm) of lead nitrate or lead sulphate solution separately in triplicates. Three blocks served as control. The soil samples collected aseptically from control and treated blocks after 20, 40 and 60 days were analysed for mycobiota using serial dilution plate and soil plate methods. Overall dominance of anamorphic fungi and paucity of mucoraceous fungi was observed amongst the sixty five species of fungi isolated. Aspergillus niger was most tolerant to Pb probably due to binding of Pb by certain groups on the fungus as revealed by FTIR spectroscopy. Pb salts adversely affected the mycobiota qualitatively as well as quantitatively. The results indicate that though soil fungal diversity is adversely affected by Pb contamination, the surviving species flourish over a period of time leading to the partial recovery of the mycopopulation. Aspergillus niger biomass with Pb-binding functional groups might be utilized for in situ management of Pb in soils and in biosorption-based effluent treatment systems. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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