Culture-based and culture-independent approach for the study of the methanogens and obligate anaerobes from different landfill sites.

Autor:	Prakash O; National Centre for Microbial Resource (NCMR), National Centre for Cell Science (NCCS), Pune, India., Dewala SR; National Centre for Microbial Resource (NCMR), National Centre for Cell Science (NCCS), Pune, India., Nimonkar Y; National Centre for Microbial Resource (NCMR), National Centre for Cell Science (NCCS), Pune, India., Patil SK; National Centre for Microbial Resource (NCMR), National Centre for Cell Science (NCCS), Pune, India., Chauhan A; Environmental Biotechnology at the School of the Environment, Florida A&M University, Tallahassee, FL, United States., Yadav A; National Centre for Microbial Resource (NCMR), National Centre for Cell Science (NCCS), Pune, India., Dhotre DP; National Centre for Microbial Resource (NCMR), National Centre for Cell Science (NCCS), Pune, India., Ranade DR; National Centre for Microbial Resource (NCMR), National Centre for Cell Science (NCCS), Pune, India.
Jazyk:	angličtina
Zdroj:	Frontiers in microbiology [Front Microbiol] 2024 Jan 29; Vol. 14, pp. 1273037. Date of Electronic Publication: 2024 Jan 29 (Print Publication: 2023).
DOI:	10.3389/fmicb.2023.1273037
Abstrakt:	The landfill is a cheap way of solid waste management in developing countries. The majority of landfills are non-sanitary and work as open garbage dumping sites and pose threats to public and environmental health. Therefore, an in-depth understanding of the chemistry and microbiology of landfills is imperative to develop the right policies for landfill management. In the current study, we investigated the chemistry and microbiology of three Indian landfill sites using culture-based and culture-independent molecular approaches. Our data indicate that the nature of landfills varies from site to site in terms of chemistry, pollutants, and pathogens. We also enriched and cultivated three methanogens using an optimized medium and constructed two high-quality draft genomes from enriched microbiomes using metagenome-assembled genome approaches. The phylogenomic study of one draft genome showed the highest 93% sequence similarity with members of Methanomassiliicoccaceae and was always enriched with Acholoplasma and Anaerohalosphaera lusitana . Despite all the efforts, we did not isolate it in pure culture and hypothesized that for the cultivation of some not-yet-cultured methanogen, the presence of other organisms plays an important role, and their syntrophic interaction must be discerned for its successful cultivation in the future. Co-cultivation of amino acid-degrading organisms indicates that their co-culture can assist in boosting the growth of methanogens. In addition, our data indicated that landfill leachate contains a heavy load of pollutants and treatment is a must before discharge in nature or use in irrigation or biofertilizer. Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. The author(s) declared that they were an editorial board member of Frontiers, at the time of submission. This had no impact on the peer review process and the final decision. (Copyright © 2024 Prakash, Dewala, Nimonkar, Patil, Chauhan, Yadav, Dhotre and Ranade.)
Databáze:	MEDLINE
Externí odkaz:	Zobrazit plný text záznamu