Authors: Harish Kumar Rathore, Monika Gupta
Abstract: The microbial communities inhabiting agroecosystems play critical roles in soil health, nutrient cycling, and crop productivity. With advancements in high-throughput sequencing technologies, comparative genomics has emerged as a powerful tool to analyze the diversity and functional capabilities of these microbial populations. This study explores how comparative genomics can illuminate the evolutionary relationships, functional gene repertoire, and adaptive traits among microbial taxa in various agricultural environments. By analyzing metagenomic datasets from different soil types and farming practices, we identify patterns of gene distribution related to nitrogen fixation, phosphorus solubilization, and pathogen resistance. The study also examines how horizontal gene transfer contributes to microbial resilience in disturbed agroecosystems. Insights from comparative genomic studies enhance our understanding of the impact of agricultural practices—such as crop rotation, fertilization, and pesticide use—on microbial diversity and ecosystem function. Case studies from organic and conventional farms reveal significant differences in microbial gene expression and evolutionary adaptation. This article underscores the importance of integrating genomic data into sustainable agriculture strategies and offers future directions for using microbial genomics in crop management and soil restoration efforts.
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