The bacterial biodegradation of soil lecithin into biofertilizer catalyzed by plant micro nutrients- molybdenum, manganese, and zinc ions

Add time:08/30/2019    Source:sciencedirect.com

The main object of this paper is to carry out experimental study to find the biodegradation of an insoluble phospholipid, lecithin by bacterial strains into water soluble phosphate compounds and other valuable products that are beneficial for biotic and abiotic systems of the soil. Lecithin is present in soil and phosphorus of phosphate group of lecithin cannot be consumed by the plants. To meet this objective three different bacterial strains, like- SMS33, SKPS32, and SKPS41 have been isolated and identified as Bacillus subtilis, Pseudomonas aeruginosa, and Pseudomonas sp. respectively by 16S rRNA sequencing and nucleotide BLAST analysis. In this investigation, three different plant micro-nutrients like molybdenum, zinc, and manganese ions have been used separately as bio-activator for lecithin bio-degradation with the ease of enzyme secretion. The degraded by-products have also been identified by LC-MS analysis. It has been observed that SMS33 bacteria in presence of ammonium molybdate catalyst shows complete bio-degradation of lecithin molecule. The degraded products of lecithin has been tested with Abelmoschus esculentus seeds to check their germination percentage, vigor index value, chlorophyll concentration, fruit yields etc. In comparison, molybdenum ion is the highest activating agent for the secretion of enzymes, lecithin degradation, and plant growth regulator. The results have been tabulated, shown graphically and discussed.

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