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Effect of buffering on the phosphate-solubilizing ability of microorganisms |
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| Authors: | P. Gyaneshwar G. Naresh Kumar L.J. Parekh |
| Affiliation: | (1) Centre for Genetic Engineering, Indian Institute of Science, Bangalore-, 560 012, India;(2) Department of Biochemistry, Faculty of Science, M.S. University of Baroda, Vadodara, India, 390 002 |
| Abstract: | Native microflora present in the alkaline vertisols and two phosphate-solubilizing bacteria (PSB) isolated from soil using conventional screening media could not release phosphorus from alkaline Indian vertisol soils supplemented with carbon and nitrogen sources. The two PSBs could solubilize both rock phosphate and di-calcium phosphate in unbuffered media but failed to solubilize rock phosphate in buffered media. The organic acids secreted by these PSBs were 20–50 times less than that required to solubilize phosphorus from alkaline soil. |
| Keywords: | Organic acids and phosphate solubilizing microorganisms phosphate solubilization |
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