Cellular remains in a ∼3.42-billion-year-old subseafloor hydrothermal environment

被引：44

作者：

Cavalazzi, Barbara ^{[1
,2
]}

Lemelle, Laurence ^{[3
]}

Simionovici, Alexandre ^{[4
,5
]}

Cady, Sherry L. ^{[6
,14
,15
]}

Russell, Michael J. ^{[7
]}

Bailo, Elena ^{[8
]}

Canteri, Roberto ^{[9
]}

Enrico, Emanuele ^{[10
]}

Manceau, Alain ^{[4
]}

Maris, Assimo ^{[11
]}

Salome, Murielle ^{[12
]}

Thomassot, Emilie ^{[13
]}

Bouden, Nordine ^{[13
]}

Tucoulou, Remi ^{[12
]}

Hofmann, Axel ^{[2
]}

机构：

[1] Univ Bologna, Dipartimento Sci Biol Geol & Ambientali, Bologna, Italy

[2] Univ Johannesburg, Dept Geol, Johannesburg, South Africa

[3] Univ Lyon, CNRS, ENS Lyon, LGL TPE, Lyon, France

[4] Univ Grenoble Alpes, CNRS, ISTerre, Grenoble, France

[5] Inst Univ France, Paris, France

[6] EMSL, Pacific Northwest Natl Lab, Richland, WA USA

[7] Univ Torino, Dipartimento Chim, Turin, Italy

[8] WITec GmbH, Ulm, Germany

[9] FBK Fdn Bruno Kessler, Trento, Italy

[10] Ist Nazl Ric Metrol, INRiM, Turin, Italy

[11] Univ Bologna, Dipartimento Chim Giacomo Ciamician, Bologna, Italy

[12] European Synchrotron Radiat Facil, Grenoble, France

[13] Univ Lorraine, CRPG, CNRS, Nancy, France

[14] Portland State Univ, Dept Geol, Portland, OR 97201 USA

[15] Portland State Univ, Ctr Life Extreme Environm, Portland, OR 97201 USA

来源：

SCIENCE ADVANCES | 2021年 / 7卷 / 29期

基金：

欧盟地平线“2020”;

关键词：

BARBERTON GREENSTONE-BELT; CARBONACEOUS-MATERIAL GEOTHERMOMETER; STRELLEY POOL FORMATION; X-RAY-ABSORPTION; ONVERWACHT GROUP; MOUNTAIN LAND; SOUTH-AFRICA; FILAMENTOUS MICROFOSSILS; MICROBIAL MATS; EARLY EARTH;

D O I：

10.1126/sciadv.abf3963

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Subsurface habitats on Earth host an extensive extant biosphere and likely provided one of Earth's earliest microbial habitats. Although the site of life's emergence continues to be debated, evidence of early life provides insights into its early evolution and metabolic affinity. Here, we present the discovery of exceptionally well-preserved, similar to 3.42-billion-year-old putative filamentous microfossils that inhabited a paleo-subseafloor hydrothermal vein system of the Barberton greenstone belt in South Africa. The filaments colonized the walls of conduits created by low-temperature hydrothermal fluid. Combined with their morphological and chemical characteristics as investigated over a range of scales, they can be considered the oldest methanogens and/or methanotrophs that thrived in an ultramafic volcanic substrate.

引用

页数：9

共 93 条

[1] Coupled silicon-oxygen isotope fractionation traces Archaean silicification [J].