Microbial biosignatures in ancient deep‐sea hydrothermal sulfides

Geobiology, Год журнала: 2022, Номер 21(3), С. 355 - 377

Опубликована: Дек. 16, 2022

Abstract Deep‐sea hydrothermal systems provide ideal conditions for prebiotic reactions and ancient metabolic pathways and, therefore, might have played a pivotal role in the emergence of life. To understand this better, it is paramount to examine fundamental interactions between processes, non‐living matter, microbial life deep time. However, distribution diversity communities deep‐sea are still poorly constrained, so evolutionary, ecological relationships remain unclear. One important reason an insufficient understanding formation diagnostic biosignatures such settings their preservation through geological This contribution centers around Precambrian sulfide deposits. Intending valuable resource scientists from across natural sciences whose research concerned with origins life, we first introduce different types that can be preserved over timescales (rock fabrics textures, microfossils, mineral precipitates, carbonaceous trace metal, isotope geochemical signatures). We then review selected reports deposits discuss geobiological significance. Our survey highlights potentially encode information on environmental conditions, presence nature complex fluids, micro‐organisms, minerals. It further emphasizes interpretation these records challenging requires concerted application analytical experimental methods various fields, including geology, mineralogy, geochemistry, microbiology. Well‐orchestrated multidisciplinary studies allow us thus help unravel geobiology settings. This, turn, critical reconstructing life's early evolution Earth search elsewhere universe.

Язык: Английский

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Molecular mechanisms and biomineralization processes of ferromanganese nodule formation: Insights its effect on nutrient imbalance and heavy metal immobilization in native soil profiles

Earth-Science Reviews, Год журнала: 2024, Номер unknown, С. 105029 - 105029

Опубликована: Дек. 1, 2024

Язык: Английский

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Biogenic calcium carbonate as evidence for life

Biogeosciences, Год журнала: 2023, Номер 20(19), С. 4135 - 4145

Опубликована: Окт. 9, 2023

Abstract. The history of the Earth is a story co-evolution minerals and microbes: not only have numerous rocks arisen from life but also itself may formed rocks. To understand strong association between microbes inorganic substrates, we investigated moonmilk, calcium carbonate deposit possible microbial origin, occurring in Iron Age Etruscan necropolis Tarquinia, Italy. These tombs provide unique environment where hypogeal walls are covered by this speleothem. study moonmilk formation, bacterial community rock which were carved: calcarenite hybrid sandstone. We present first evidence that precipitation driven within on surfaces. describe how produced contributes to formation evolution. communities sandstone displayed, at phylum level, same pattern sampled tombs, suggesting originates metabolism an endolytic community. calcite known speleothem with undoubted biogenic thus representing robust credible biosignature life. Its presence inner parts adds its characteristics as biosignature.

Язык: Английский

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Will tomorrow's mineral materials be grown?

Microbial Biotechnology, Год журнала: 2023, Номер 16(9), С. 1713 - 1722

Опубликована: Июль 31, 2023

Biomineralization, the capacity to form minerals, has evolved in a great diversity of bacterial lineages as an adaptation different environmental conditions and biological functions. Microbial biominerals often display original properties (morphology, composition, structure, association with organics) that significantly differ from those abiotically formed counterparts, altogether defining 'mineral phenotype'. In principle, it should be possible take advantage microbial biomineralization processes design biomanufacture advanced mineral materials for range technological applications. practice, this rarely been done so far only very limited number biomineral types. This is mainly due our poor understanding underlying molecular mechanisms controlling pathways, preventing us developing bioengineering strategies aiming at improving Another important challenge difficulty upscale lab industrial production. Addressing these challenges will require combining expertise microbiologists geomicrobiologists, who have historically working forefront research on microbe-mineral interactions, alongside bioengineers material scientists. Such interdisciplinary efforts may future allow emergence biomanufacturing industry, critical tool towards development more sustainable circular bioeconomies.

Язык: Английский

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Quantitative mapping of calcium cell reservoirs in cyanobacteria at the submicrometer scale

Journal of Electron Spectroscopy and Related Phenomena, Год журнала: 2023, Номер 267, С. 147369 - 147369

Опубликована: Июль 5, 2023

Язык: Английский

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