Exploring Microbe Uses from a Salty Lake for Industry and Medicine

Jenn Hoskins
24th January, 2024

Exploring Microbe Uses from a Salty Lake for Industry and Medicine

Lonar Lake, India. Focus of the study.

Lonar Lake, a unique ecosystem formed by a meteorite impact in Maharashtra, India, presents a compelling area of study for microbiologists and biotechnologists. Soda lakes, characterized by their high salt and alkaline content, are relatively under-explored environments, yet they harbor potentially valuable microorganisms with applications in medicine, industry, and environmental cleanup. The challenge lies in identifying and understanding these microbial communities and their capabilities. A recent review conducted by researchers at NMIMS School of Pharmacy, Mumbai[1], consolidates existing knowledge and highlights the potential of Lonar Lake as a source of novel bioactive compounds and enzymes. The review details the diverse microbial life found within Lonar Lake. Initial phylogenetic studies identified dominant groups like Proteobacteria, Actinobacteria, Firmicutes, and Cyanobacteria, but also revealed the presence of less common groups such as Bacteroidetes, Nitrospirae, and Verrucomicrobia. This diversity suggests a complex ecosystem capable of a wide range of metabolic processes. The lake is also notable for its abundance of Spirulina plantensis, a type of phytoplankton. Interestingly, previous investigations into Lonar Lake have already uncovered several unique microbial species. For example, studies identified a novel bacterium, Cecembia lonarensis, isolated from the lake’s water, characterized by its reddish-orange pigmentation and unique metabolic properties[2]. Another study described Indibacter alkaliphilus, also a novel species, also found in Lonar Lake, distinguished by its specific fatty acid composition and respiratory quinones[3]. These discoveries demonstrate the lake’s potential to yield previously unknown microorganisms. The review emphasizes that Lonar Lake isn’t just home to known microbial groups, but likely contains undiscovered species adapted to its extreme conditions. This is particularly relevant given findings from stable isotope probing experiments which revealed active methylotrophic communities – microorganisms that consume single-carbon compounds like methane and methanol[4]. These experiments identified Methylomicrobium, Methylophaga, and Bacillus as key players in carbon cycling within the lake, but also detected sequences from organisms not currently classified as known methanotrophs or methylotrophs, hinting at the existence of novel metabolic pathways. Furthermore, research has also identified active methanogens – microorganisms that produce methane – within the lake sediments, closely related to Methanolobus oregonensis[5]. This suggests a complex interplay between methane-consuming and methane-producing organisms, contributing to the lake’s unique geochemical profile. The presence of methanogens is particularly interesting as it indicates a potential for biogas production, a renewable energy source. The potential applications of these microorganisms are broad. The review highlights the isolation of antibiotic-producing bacteria and alkaline protease-producing bacteria from Lonar Lake, suggesting a source for new pharmaceuticals and industrial enzymes. Biosurfactants, compounds that reduce surface tension, and biofuels are also identified as potential products. The unique enzymes produced by these microorganisms could also be valuable in bioremediation – using biological organisms to clean up pollutants. The review suggests that the novel microbial assemblage within Lonar Lake represents a largely untapped resource for bioactive molecules with medicinal, industrial, and biotechnological potential.

MedicineBiotechEcology

References

Main Study

1) Industrial and Pharmaceutical Applications of Microbial Diversity of Hypersaline Ecology from Lonar Soda Crater.

Published 22nd January, 2024

https://doi.org/10.2174/0113892010265978231109085224

Related Studies

2) Cecembia lonarensis gen. nov., sp. nov., a haloalkalitolerant bacterium of the family Cyclobacteriaceae, isolated from a haloalkaline lake and emended descriptions of the genera Indibacter, Nitritalea and Belliella.

https://doi.org/10.1099/ijs.0.038604-0

3) Indibacter alkaliphilus gen. nov., sp. nov., an alkaliphilic bacterium isolated from a haloalkaline lake.

https://doi.org/10.1099/ijs.0.014076

4) Active methylotrophs in the sediments of Lonar Lake, a saline and alkaline ecosystem formed by meteor impact.

https://doi.org/10.1038/ismej.2010.70

5) Molecular diversity of methanogens and identification of Methanolobus sp. as active methylotrophic Archaea in Lonar crater lake sediments.

https://doi.org/10.1111/j.1574-6941.2011.01274.x


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