Abstract
This comprehensive exploration delves into the realm of microorganisms, elucidating their paramount significance within Earth's diverse biomes. From the advent of the microscope to current advancements in microbial pathogenesis, our understanding of these minute entities has evolved exponentially. Ubiquitously distributed across various ecological niches—from the aphotic zones of marine trenches to stratospheric altitudes—microbes play a pivotal role in biogeochemical cycles, symbiotic associations, pathogenesis, and even in biotechnological applications. The microbial taxonomy encompasses various phyla: bacteria, characterized by their distinct peptidoglycan cell walls; viruses, identified by their proteinaceous capsids and host-specific interactions; fungi, renowned for their chitin-infused cell walls and mutualistic mycorrhizal associations; protozoa, single-celled eukaryotes with specialized organelles and complex life cycles; and algae, primary producers that significantly contribute to global photosynthesis and oxygen production. Additionally, the chapter elucidates the genomic dynamics of microbes, detailing transcriptional and translational processes essential for protein synthesis and phenotypic expression. Furthermore, we explore the metabolic pathways harnessed by microbes for energy transduction, highlighting both respiratory and fermentative mechanisms. It also spotlights extremophilic microorganisms, adept at thriving in inhospitable habitats, from hyperthermal geysers to hypersaline brines. This present chapter highlights the profound intricacies of the microbial cosmos.
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Author “Akarsh Verma” is grateful to the monetary support provided by the University of Petroleum and Energy Studies (UPES)-SEED Grant program.
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Gupta, J., Verma, A. (2024). MICROBIOLOGY: The Science to the World of Microbes. In: Gupta, J., Verma, A. (eds) Microbiology-2.0 Update for a Sustainable Future. Springer, Singapore. https://doi.org/10.1007/978-981-99-9617-9_1
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DOI: https://doi.org/10.1007/978-981-99-9617-9_1
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