Living at the Extremes: Extremophiles and the Limits of Life in a Planetary Context.
Nancy Merino,Heidi S. Aronson,D.P. Bojanova,Jayme Feyhl-Buska,Michael L. Wong,Shu Zhang,Donato Giovannelli +6 more
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TLDR
The current state of knowledge for the biospace in which life operates on Earth is reviewed and discussed in a planetary context, highlighting knowledge gaps and areas of opportunity.Abstract:
Prokaryotic life has dominated most of the evolutionary history of our planet, evolving to occupy virtually all available environmental niches. Extremophiles, especially those thriving under multiple extremes, represent a key area of research for multiple disciplines, spanning from the study of adaptations to harsh conditions, to the biogeochemical cycling of elements. Extremophile research also has implications for origin of life studies and the search for life on other planetary and celestial bodies. In this article, we will review the current state of knowledge for the biospace in which life operates on Earth and will discuss it in a planetary context, highlighting knowledge gaps and areas of opportunity.read more
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Global Patterns in Bacterial Diversity
Catherine A. Lozupone,Rob Knight +1 more
TL;DR: This work reports the most comprehensive analysis of the environmental distribution of bacteria to date, based on 21,752 16S rRNA sequences compiled from 111 studies of diverse physical environments, and finds that sediments are more phylogenetically diverse than any other environment type.
Journal ArticleDOI
A Review on Viral Metagenomics in Extreme Environments
Sonia Dávila-Ramos,Hugo G. Castelán-Sánchez,Liliana Martínez-Ávila,María del Rayo Sánchez-Carbente,Raúl Peralta,Armando Hernández-Mendoza,Alan D. W. Dobson,Ramón A. Gonzalez,Nina Pastor,Ramón Alberto Batista-García +9 more
TL;DR: This review critically analyze recent progress in metagenomic based approaches to explore the viromes in extreme environments and discusses the potential for new discoveries, as well as methodological challenges and perspectives.
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Subduction hides high-pressure sources of energy that may feed the deep subsurface biosphere.
A. Vitale Brovarone,A. Vitale Brovarone,Dimitri A. Sverjensky,Francesca Piccoli,F. Ressico,Donato Giovannelli,I. Daniel +6 more
TL;DR: It is suggested that subduction, worldwide, hosts large sources of deep H2 and abiotic CH4, potentially providing energy to the overlying subsurface biosphere in the forearc regions of convergent margins.
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Hyperdiverse archaea near life limits at the polyextreme geothermal Dallol area.
Jodie Belilla,David Moreira,Ludwig Jardillier,Guillaume Reboul,Karim Benzerara,José María López-García,Paola Bertolino,Ana I. López-Archilla,Purificación López-García +8 more
TL;DR: It is hypothesized that a high cytoplasmic K+-level was an original archaeal adaptation to hyperthermophily, subsequently exapted during several transitions to extreme halophily and helps circumscribing habitability and calls for cautionary interpretations of morphological biosignatures on Earth and beyond.
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The Interior and Atmosphere of the Habitable-zone Exoplanet K2-18b
TL;DR: In this article, the atmospheric and interior properties of K2-18b were investigated based on its bulk properties and its atmospheric transmission spectrum, and the authors constrain the atmosphere to be H$2$-rich with a H$_2$O volume mixing ratio of $0.02-14.8$%, consistent with previous studies.
References
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Journal ArticleDOI
The composition of the Earth
William F. McDonough,Shen-Su Sun +1 more
TL;DR: In this paper, the authors compared the relative abundances of the refractory elements in carbonaceous, ordinary, and enstatite chondritic meteorites and found that the most consistent composition of the Earth's core is derived from the seismic profile and its interpretation, compared with primitive meteorites, and chemical and petrological models of peridotite-basalt melting relationships.
Journal ArticleDOI
The composition of the continental crust
TL;DR: In this paper, a new calculation of the crustal composition is based on the proportions of upper crust (UC) to felsic lower crust (FLC) to mafic lower-crust (MLC) of about 1.6:0.4.
Journal ArticleDOI
Pyrosequencing-based assessment of soil pH as a predictor of soil bacterial community structure at the continental scale.
TL;DR: The results suggest that the structure of soil bacterial communities is predictable, to some degree, across larger spatial scales, and the effect of soil pH on bacterial community composition is evident at even relatively coarse levels of taxonomic resolution.
Journal ArticleDOI
Soil bacterial and fungal communities across a pH gradient in an arable soil.
Johannes Rousk,Erland Bååth,Philip C. Brookes,Christian L. Lauber,Catherine A. Lozupone,J. Gregory Caporaso,Rob Knight,Rob Knight,Noah Fierer,Noah Fierer +9 more
TL;DR: Soils collected across a long-term liming experiment were used to investigate the direct influence of pH on the abundance and composition of the two major soil microbial taxa, fungi and bacteria, and both the relative abundance and diversity of bacteria were positively related to pH.
Journal ArticleDOI
Composition of the Earth
TL;DR: In this article, the authors reported that the resulting densities in the lower mantle are in good agreement with shock-wave measurements on rocks having FeO contents in the range 10 ± 2% by weight.