Microbial diversity in extreme environments

Nature Reviews Microbiology, Journal Year: 2021, Volume and Issue: 20(4), P. 219 - 235

Published: Nov. 9, 2021

Language: Английский

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Two Chloroflexi classes independently evolved the ability to persist on atmospheric hydrogen and carbon monoxide

The ISME Journal, Journal Year: 2019, Volume and Issue: 13(7), P. 1801 - 1813

Published: March 14, 2019

Abstract Most aerobic bacteria exist in dormant states within natural environments. In these states, they endure adverse environmental conditions such as nutrient starvation by decreasing metabolic expenditure and using alternative energy sources. this study, we investigated the sources that support persistence of two thermophilic strains environmentally widespread but understudied phylum Chloroflexi. A transcriptome study revealed Thermomicrobium roseum (class Chloroflexia) extensively remodels its respiratory chain upon entry into stationary phase due to limitation. Whereas primary dehydrogenases associated with heterotrophic respiration were downregulated, putative operons encoding enzymes involved molecular hydrogen (H2), carbon monoxide (CO), sulfur compound oxidation significantly upregulated. Gas chromatography microsensor experiments showed T. aerobically respires H2 CO at a range relevant concentrations sub-atmospheric levels. Phylogenetic analysis suggests hydrogenases mediating processes are widely distributed Chloroflexi genomes have probably been horizontally acquired on more than one occasion. Consistently, confirmed sporulating isolate Thermogemmatispora sp. T81 Ktedonobacteria) also oxidises atmospheric during persistence, though further studies required determine if findings extend mesophilic strains. This provides axenic culture evidence supports bacterial reports third phylum, following Actinobacteria Acidobacteria, be experimentally shown mediate biogeochemically ecologically important process oxidation. adds growing body trace gases dependable for persistence.

Language: Английский

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Temperature and microbial interactions drive the deterministic assembly processes in sediments of hot springs

The Science of The Total Environment, Journal Year: 2021, Volume and Issue: 772, P. 145465 - 145465

Published: Jan. 30, 2021

Language: Английский

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Reaching unreachables: Obstacles and successes of microbial cultivation and their reasons

Frontiers in Microbiology, Journal Year: 2023, Volume and Issue: 14

Published: March 7, 2023

In terms of the number and diversity living units, prokaryotic empire is most represented form life on Earth, yet it still to a significant degree shrouded in darkness. This microbial “dark matter” hides great deal potential phylogenetically or metabolically diverse microorganisms, thus important acquire them pure culture. However, do we know what microorganisms really need for their growth, obstacles are cultivation previously unidentified taxa? Here review common sometimes unexpected requirements environmental especially soil-harbored bacteria, needed replication cultivation. These include resuscitation stimuli, physical chemical factors aiding cultivation, growth factors, co-cultivation laboratory natural neighborhood.

Language: Английский

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Island biogeography of soil bacteria and fungi: similar patterns, but different mechanisms

The ISME Journal, Journal Year: 2020, Volume and Issue: 14(7), P. 1886 - 1896

Published: April 27, 2020

Abstract Microbes, similar to plants and animals, exhibit biogeographic patterns. However, in contrast with the considerable knowledge on island biogeography of higher organisms, we know little about distribution microorganisms within among islands. Here, explored insular soil bacterial fungal underlying mechanisms, using microbiota from a group land-bridge islands as model system. Similar species-area relationships observed for many macroorganisms, both island-scale diversity increased area; neither diversity, however, was affected by isolation. By contrast, communities exhibited strikingly different assembly patterns The loss smaller driven primarily systematic decline samples, whereas homogenization community composition samples. Lower moisture limited within-sample spatial distances samples restricted among-sample These results indicate that among-island differences habitat quality generate relationship, within-island dispersal limitation generates relationship. Together, our study suggests mechanisms underlie bacteria fungi.

Language: Английский

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Effect of tectonic processes on biosphere–geosphere feedbacks across a convergent margin

Nature Geoscience, Journal Year: 2021, Volume and Issue: 14(5), P. 301 - 306

Published: April 22, 2021

Language: Английский

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Strategy improvements to minimize the drawbacks of geothermal investments by using spherical fuzzy modelling

International Journal of Energy Research, Journal Year: 2022, Volume and Issue: 46(8), P. 10796 - 10807

Published: March 25, 2022

This study aims to evaluate the significant risks in geothermal energy investments. For this purpose, a model is suggested by considering Spherical fuzzy DEMATEL technique. With help of literature examination, eight important are identified for these projects. In following step, their weights calculated so that more risk issues can be understood. Another calculation also performed triangular check consistency analysis results. The results both and techniques similar. most essential same methods demonstrate validity findings. indicate accidents because incorrect design-material use has greatest importance since it highest weight. Moreover, decreased water resources pollution them play role regard. Great attention should paid quality material used facilities. Otherwise, there explosion fire facility. These problems threaten lives many people. process, states have very duties. Some standards determined addition, compliance materials with regulations checked routine inspections. situation will minimize due using poor-quality materials.

Language: Английский

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Chemolithoautotroph distributions across the subsurface of a convergent margin

The ISME Journal, Journal Year: 2022, Volume and Issue: 17(1), P. 140 - 150

Published: Oct. 18, 2022

Language: Английский

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Building a genome-based understanding of bacterial pH preferences

Science Advances, Journal Year: 2023, Volume and Issue: 9(17)

Published: April 28, 2023

The environmental preferences of many microbes remain undetermined. This is the case for bacterial pH preferences, which can be difficult to predict a priori despite importance as factor structuring communities in systems. We compiled data on distributions from five datasets spanning gradients soil and freshwater systems (1470 samples), quantified taxa across these datasets, genomic representative taxa. While taxonomic phylogenetic information were generally poor predictors we identified genes consistently associated with preference environments. then developed validated machine learning model estimate alone, that could aid selection microbial inoculants, improve species distribution models, or help design effective cultivation strategies. More generally, demonstrate value combining biogeographic infer diverse

Language: Английский

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Extreme environments offer an unprecedented opportunity to understand microbial eukaryotic ecology, evolution, and genome biology

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: Aug. 16, 2023

Abstract Research in extreme environments has substantially expanded our understanding of the ecology and evolution life on Earth, but a major group organisms been largely overlooked: microbial eukaryotes (i.e., protists). In this Perspective, we summarize data from over 80 studies protists identify focal lineages that are significant interest for further study, including clades within Echinamoebida, Heterolobosea, Radiolaria, Haptophyta, Oomycota, Cryptophyta. We argue prime sampling targets to fill gaps eukaryotic tree increase ecology, metabolism, genome architecture, life.

Language: Английский

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