ABSTRACT

Bacillus aerius colonies were isolated and enumerated in the soil samples obtained from Panambur beach washings, Mangalore. The accumulation of Lanthanides in Bacillus aerius is characterised by using ICP OES and FTIR analysis. ICP MS is carried out to analyse the amount of lanthanides in soil. Cerium and Samarium were present in high proportion in the samples taken. The bioaccumulation studies using Bacillus aerius showed as samarium(sm) of 20.14 mg/l and Cerium (ce) of 8.101 mg/l. Further FTIR analysis is carried out to detect the significant changes on soil brought by bacterium. Bacillus aerius is a gram positive bacterium, with the capacity to accumulate lanthanide elements in its external surface and that is not transported into cytoplasm. The cell wall of the Bacillus species and many other gram positive bacteria provides the bacterium with rigid and protective sacculus interposed between the cell and its environment. In the accumulation of RRE, the amount of RRE accumulated by gram positive bacteria were much higher than those of gram negative bacteria, fungi and yeast. Generally, the teichoic acid polymers in gram positive bacteria definitely confer a strong negative charge on the surface of the cell wall because of their high content of ionized phosphate groups, although a little amount of teichoic acid is found in gram negative bacteria. The binding of metal and cell wall strongly depends on teichoic acid in Bacillus. Therefore, it is tentatively considered that the chelate formation between the cell surface and gram positive between and metal ion becomes stronger. Keywords: Bacillus aerius, Lanthanides From Panambur Beach (Mangalore)
Publication date: 01/08/2022

https://ijbpas.com/pdf/2022/August/MS_IJBPAS_2022_6297.pdf

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https://doi.org/10.31032/IJBPAS/2022/11.8.6297