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Bacterial diversity in 110 thermal hot springs of Indian Himalayan Region (IHR)

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Abstract

Thermal hot springs are present throughout the world and constitute a unique habitat for microbial diversity. The current investigation is conducted to study the bacterial diversity of thermophilic microorganisms in thermal hot springs of the Indian Himalayan Region (IHR). As of today, 110 geothermal hot springs have been explored for microbial diversity. In this study, we observed that the growth of thermophilic bacteria isolated from thermal hot springs of IHR ranges between 40 and 100 °C, and pH of 3.5–8 have been reported in the literature. The major bacterial species reported from the thermal hot springs of IHR are Bacillus spp., Geobacillus spp., Paenibacillus spp., Pseudomonas spp., Anoxybacillus, Paenibacillus, Brevibacillus, Aneurinibacillus, Thermus aquaticus, Aquimonas, Flavobacterium, etc. Furthermore, bacterial isolates from thermal hot springs of IHR have been reported to produce various enzymes and metabolites such as amylase, β-galactosidase, cellulase, nitrate reductase, acetoin, caffeine degradation enzymes, lipase, urease, and laccase. Metagenomic study and the entire genomic shotgun project have established the impact of physicochemical parameters (temperature and pH) on developing the microbiome. We have discussed the discoveries of microbiological data on the hot springs of IHR until the end of year 2021. As a whole, the microbiome adapts themselves as successful inhabitants to extreme environmental conditions and also serves as a diverse resource for potential applications in health, food, and environment.

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Acknowledgements

We would like to thank Shoolini University of Biotechnology and Management Sciences for their immense and valuable support. The authors also thank DST for providing an infrastructure grant (DST-FIST) to Shoolini University (Coordinator: KD).

Funding

This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.

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JV: conceptualization, data curation, formal analysis, writing—original draft, writing—review and editing, and validation; AS: data curation, formal analysis, writing—review and editing, and validation; KD: conceptualization, data curation, formal analysis, writing—original draft, writing—review and editing, and validation.

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Correspondence to Kamal Dev.

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The authors of the manuscript “Bacterial Diversity in 110 Thermal Hot Springs of Indian Himalayan Region (IHR)” have no conflict of interest.

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Verma, J., Sourirajan, A. & Dev, K. Bacterial diversity in 110 thermal hot springs of Indian Himalayan Region (IHR). 3 Biotech 12, 238 (2022). https://doi.org/10.1007/s13205-022-03270-8

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  • DOI: https://doi.org/10.1007/s13205-022-03270-8

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