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Tamby A, Sinninghe Damsté JS, Villanueva L. Microbial membrane lipid adaptations to high hydrostatic pressure in the marine environment. Front Mol Biosci 2023; 9:1058381. [PMID: 36685280 PMCID: PMC9853057 DOI: 10.3389/fmolb.2022.1058381] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 11/29/2022] [Indexed: 01/09/2023] Open
Abstract
The deep-sea is characterized by extreme conditions, such as high hydrostatic pressure (HHP) and near-freezing temperature. Piezophiles, microorganisms adapted to high pressure, have developed key strategies to maintain the integrity of their lipid membrane at these conditions. The abundance of specific membrane lipids, such as those containing unsaturated and branched-chain fatty acids, rises with increasing HHP. Nevertheless, this strategy is not universal among piezophiles, highlighting the need to further understand the effects of HHP on microbial lipid membranes. Challenges in the study of lipid membrane adaptations by piezophiles also involve methodological developments, cross-adaptation studies, and insight into slow-growing piezophiles. Moreover, the effects of HHP on piezophiles are often difficult to disentangle from effects caused by low temperature that are often characteristic of the deep sea. Here, we review the knowledge of membrane lipid adaptation strategies of piezophiles, and put it into the perspective of marine systems, highlighting the future challenges of research studying the effects of HHP on the microbial lipid composition.
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Affiliation(s)
- Anandi Tamby
- Department of Marine Microbiology and Biogeochemistry (MMB), NIOZ Royal Netherlands Institute for Sea Research, Den Burg, Netherlands,*Correspondence: Anandi Tamby,
| | - Jaap S. Sinninghe Damsté
- Department of Marine Microbiology and Biogeochemistry (MMB), NIOZ Royal Netherlands Institute for Sea Research, Den Burg, Netherlands,Department of Earth Sciences, Faculty of Geosciences, Utrecht University, Utrecht, Netherlands
| | - Laura Villanueva
- Department of Marine Microbiology and Biogeochemistry (MMB), NIOZ Royal Netherlands Institute for Sea Research, Den Burg, Netherlands,Department of Earth Sciences, Faculty of Geosciences, Utrecht University, Utrecht, Netherlands
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2
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Pérez-Rodríguez I, Sievert SM, Fogel ML, Foustoukos DI. Physiological and metabolic responses of chemolithoautotrophic NO 3 - reducers to high hydrostatic pressure. GEOBIOLOGY 2022; 20:857-869. [PMID: 36081384 DOI: 10.1111/gbi.12522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 06/09/2022] [Accepted: 07/22/2022] [Indexed: 06/15/2023]
Abstract
We investigated the impact of pressure on thermophilic, chemolithoautotrophic NO 3 - reducing bacteria of the phyla Campylobacterota and Aquificota isolated from deep-sea hydrothermal vents. Batch incubations at 5 and 20 MPa resulted in decreased NO 3 - consumption, lower cell concentrations, and overall slower growth in Caminibacter mediatlanticus (Campylobacterota) and Thermovibrio ammonificans (Aquificota), relative to batch incubations near standard pressure (0.2 MPa) conditions. Nitrogen isotope fractionation effects from chemolithoautotrophic NO 3 - reduction by both microorganisms were, on the contrary, maintained under all pressure conditions. Comparable chemolithoautotrophic NO 3 - reducing activities between previously reported natural hydrothermal vent fluid microbial communities dominated by Campylobacterota at 25 MPa and Campylobacterota laboratory isolates at 0.2 MPa, suggest robust similarities in cell-specific NO 3 - reduction rates and doubling times between microbial populations and communities growing maximally under similar temperature conditions. Physiological and metabolic comparisons of our results with other studies of pressure effects on anaerobic chemolithoautotrophic processes (i.e., microbial S0 -oxidation coupled to Fe(III) reduction and hydrogenotrophic methanogenesis) suggest that anaerobic chemolithoautotrophs relying on oxidation-reduction (redox) reactions that yield higher Gibbs energies experience larger shifts in cell-specific respiration rates and doubling times at increased pressures. Overall, our results advance understanding of the role of pressure, its relationship with temperature and redox conditions, and their effects on seafloor chemolithoautotrophic NO 3 - reduction and other anaerobic chemolithoautotrophic processes.
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Affiliation(s)
- Ileana Pérez-Rodríguez
- Department of Earth and Environmental Science, University of Pennsylvania, Philadelphia, Pennsylvania, USA
- Earth and Planets Laboratory, Carnegie Institution of Washington, Washington, District of Columbia, USA
| | - Stefan M Sievert
- Biology Department, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts, USA
| | - Marilyn L Fogel
- Earth and Planets Laboratory, Carnegie Institution of Washington, Washington, District of Columbia, USA
- Department of Earth and Planetary Sciences, University of California, Riverside, California, USA
| | - Dionysis I Foustoukos
- Earth and Planets Laboratory, Carnegie Institution of Washington, Washington, District of Columbia, USA
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Cario A, Larzillière M, Nguyen O, Alain K, Marre S. High-Pressure Microfluidics for Ultra-Fast Microbial Phenotyping. Front Microbiol 2022; 13:866681. [PMID: 35677901 PMCID: PMC9168469 DOI: 10.3389/fmicb.2022.866681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 04/27/2022] [Indexed: 01/09/2023] Open
Abstract
Here, we present a novel methodology based on high-pressure microfluidics to rapidly perform temperature-based phenotyping of microbial strains from deep-sea environments. The main advantage concerns the multiple on-chip temperature conditions that can be achieved in a single experiment at pressures representative of the deep-sea, overcoming the conventional limitations of large-scale batch metal reactors to conduct fast screening investigations. We monitored the growth of the model strain Thermococcus barophilus over 40 temperature and pressure conditions, without any decompression, in only 1 week, whereas it takes weeks or months with conventional approaches. The results are later compared with data from the literature. An additional example is also shown for a hydrogenotrophic methanogen strain (Methanothermococcus thermolithotrophicus), demonstrating the robustness of the methodology. These microfluidic tools can be used in laboratories to accelerate characterizations of new isolated species, changing the widely accepted paradigm that high-pressure microbiology experiments are time-consuming.
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Affiliation(s)
- Anaïs Cario
- Univ. Bordeaux, CNRS, Bordeaux INP, ICMCB, UMR 5026, Pessac, France
- *Correspondence: Anaïs Cario,
| | - Marina Larzillière
- Univ. Bordeaux, CNRS, Bordeaux INP, ICMCB, UMR 5026, Pessac, France
- CNRS, Univ. Brest, Ifremer, IRP 1211 MicrobSea, Unité de Biologie et Ecologie des Ecosystèmes Marins Profonds BEEP, IUEM, Plouzané, France
| | - Olivier Nguyen
- Univ. Bordeaux, CNRS, Bordeaux INP, ICMCB, UMR 5026, Pessac, France
| | - Karine Alain
- CNRS, Univ. Brest, Ifremer, IRP 1211 MicrobSea, Unité de Biologie et Ecologie des Ecosystèmes Marins Profonds BEEP, IUEM, Plouzané, France
| | - Samuel Marre
- Univ. Bordeaux, CNRS, Bordeaux INP, ICMCB, UMR 5026, Pessac, France
- Samuel Marre,
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Cario A, Oliver GC, Rogers KL. Characterizing the Piezosphere: The Effects of Decompression on Microbial Growth Dynamics. Front Microbiol 2022; 13:867340. [PMID: 35663870 PMCID: PMC9157427 DOI: 10.3389/fmicb.2022.867340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Accepted: 04/20/2022] [Indexed: 12/04/2022] Open
Abstract
The extent to which the full diversity of the subsurface microbiome can be captured via cultivation is likely hindered by the inevitable loss of cellular viability from decompression during sampling, enrichment, and isolation. Furthermore, the pressure tolerance of previously isolated strains that span surface and subsurface ecosystems can shed light into microbial activity and pressure adaptation in these transition zones. However, assessments of the effects of elevated pressure on the physiology of piezotolerant and piezosensitive species may be biased by high-pressure enrichment techniques. Here, we compared two high-pressure cultivation techniques-one that requires decompression of the whole cultures during sampling and one that employs the previously described isobaric PUSH devices-to explore the effects of repeated decompression during incubations performed to characterize isolates from deep environments. Two model sulfate-reducing prokaryotes were used to test the effects of decompression/repressurization cycles on growth rates, cell yields, and pressure tolerance. The mesophilic bacterium Desulfovibrio salexigens was cultivated from 0.1 to 50 MPa, and the hyperthermophilic archaeon Archaeoglobus fulgidus was tested from 0.1 to 98 MPa. For both cultivation methods, D. salexigens showed exponential growth up to 20 MPa, but faster growth rates were observed for isobaric cultivation. Furthermore, at 30 MPa minor growth was observed in D. salexigens cultures only for isobaric conditions. Isobaric conditions also extended exponential growth of A. fulgidus to 60 MPa, compared to 50 MPa when cultures were decompressed during subsampling. For both strains, growth rates and cell yields decreased with increasing pressures, and the most pronounced effects of decompression were observed at the higher end of the pressure ranges. These results highlight that repeated decompression can have a significant negative impact on cell viability, suggesting that decompression tolerance may depend on habitat depth. Furthermore, sampling, enrichment, and cultivation in isobaric devices is critical not only to explore the portion of the deep biosphere that is sensitive to decompression, but also to better characterize the pressure limits and growth characteristics of piezotolerant and piezosensitive species that span surface and subsurface ecosystems.
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Affiliation(s)
- Anaïs Cario
- Department of Earth and Environmental Sciences, Rensselaer Polytechnic Institute, Troy, NY, United States
| | - Gina C. Oliver
- Department of Earth and Environmental Sciences, Rensselaer Polytechnic Institute, Troy, NY, United States
| | - Karyn L. Rogers
- Department of Earth and Environmental Sciences, Rensselaer Polytechnic Institute, Troy, NY, United States
- Rensselaer Astrobiology Research and Education Center, Rensselaer Polytechnic Institute, Troy, NY, United States
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Marietou A. Sulfate reducing microorganisms in high temperature oil reservoirs. ADVANCES IN APPLIED MICROBIOLOGY 2021; 116:99-131. [PMID: 34353505 DOI: 10.1016/bs.aambs.2021.03.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
High temperature reservoirs offer a window into the microbial life of the deep biosphere. Sulfate reducing microorganisms have been recovered from high temperature oil reservoirs around the globe and characterized using culture-dependent and culture-independent approaches. The activities of sulfate reducers contribute to reservoir souring and hydrocarbon degradation among other attracting considerable interest from the oil industry for the last 100 years. The extremes of temperature and pressure shape the activities and distribution of sulfate reducing bacteria and archaea in high temperature reservoirs. This chapter will attempt to summarize the key findings on the diversity and activities of sulfate reducing microorganisms in high temperature reservoirs.
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Affiliation(s)
- Angeliki Marietou
- Section for Microbiology, Department of Biology, Aarhus University, Aarhus, Denmark.
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