PHOSPHATE SOLUBILIZING BACTERIA AND ITS APPLICATION
Main Article Content
Keywords
Phosphate Solubilization Bacteria, High Pressure Liquid Chromatography, Biofertilizer, Heavy metal resistance, Plant growth promoting bacteria
Abstract
Phosphate solubilizing bacteria are PGPRs which are usually present in very less concentration in the soil (in ppm) but they have a very crucial role to be played in making the inorganic phosphate available in the organic form so that the plants can absorb it improve their growth and yield. This project includes comparison between qualitative and quantitative analysis of the phosphate solubilization of 4 strains- Bacillus subtilis, Pseudomonas putida, Pseudomonas fluorescens andRhizobia and checking which will produce the maximum improvement in the growth of plants as biofertilizers if applied. Qualitative and quantitative assays are performed in order to check which strain has best phosphate solubilizing ability among the above-mentioned bacteria. HPLC analysis for organic acid produced and the plant hormone synthesized by the bacteria were also performed. This gives a much clearer idea of the entire process of how these biofertilisers work. Further extension of the study is identifying the phosphate solubilizing bacterial strain that has the capacity to resist the heavy metal accumulation which was carried out by plate assay and microtitre plate.
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