The Quantitative Assessment of Bacterial Species from Soil Samples through Real Time PCR

This study assessed microbial populations in soil samples from the Bhopal, Capital, Madhya Pradesh, India using traditional dilution plating, supplemented with qPCR for molecular insights. The CFU counts ranged from 6.3 to 8.2 log10 CFU/gm, with sample 7 having the highest and sample 4 the lowest bacterial load, highlighting variability due to soil properties and environmental conditions. qPCR analysis showed an inverse relationship between CFU counts and CT values, confirming higher DNA concentrations with higher viable bacterial counts. This dual approach of combining CFU and qPCR methods offers a comprehensive understanding of microbial presence, consistent with prior research findings. High bacterial counts, as seen in sample 7, suggest healthy soil with robust nutrient cycling and organic matter decomposition, while lower counts in sample 4 may indicate less favorable conditions for microbial growth. Future studies should incorporate advanced molecular techniques, like high-throughput sequencing, to fully capture soil microbial diversity.