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Screening of Some Microbial Isolates from Soil Samples for Solubilization of Inorganic Phosphate

Author Affiliations

  • 1Department of Biological Sciences, Afe Babalola University, Ado-Ekiti, Nigeria
  • 2Department of Biological Sciences, Afe Babalola University, Ado-Ekiti, Nigeria
  • 3Department of Biological Sciences, Afe Babalola University, Ado-Ekiti,Nigeria
  • 4Department of Biological Sciences, Afe Babalola University, Ado-Ekiti, Nigeria
  • 5Department of Chemical Sciences, Afe Babalola University, Ado-Ekiti, Nigeria

Int. Res. J. Biological Sci., Volume 5, Issue (8), Pages 1-6, August,10 (2016)

Abstract

Thirty two bacterial and six fungal strains isolated from different soil samples collected from the Federal University of Technology, Akure and Afe Babalola University, Ado Ekiti, Nigeria were qualitatively and quantitatively screened for phosphate solubilization ability using National Botanical Research Institute phosphate agar and broth containing tricalcium phosphate as the single source of phosphorus. The result of the qualitative screening showed that none of the isolates formed any halo zone which was indicative of phosphate solubilization. However, in liquid medium, fifteen bacterial isolates showed phosphate solubilization which was evident by decrease of pH in National Botanical Research Institute phosphate broth after 24, 48, 72, 96 and 120 hours. All the fungal isolates showed more efficiency in solubilization of phosphate with Aspergillus parasiticus solubilizing most of the phosphate in the medium.

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