Lightning strikes as a major facilitator of prebiotic phosphorus reduction on early Earth

Benjamin L. Hess (), Sandra Piazolo and Jason Harvey
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Benjamin L. Hess: Yale University
Sandra Piazolo: The University of Leeds
Jason Harvey: The University of Leeds

Nature Communications, 2021, vol. 12, issue 1, 1-8

Abstract: Abstract When hydrated, phosphides such as the mineral schreibersite, (Fe,Ni)3P, allow for the synthesis of important phosphorus-bearing organic compounds. Such phosphides are common accessory minerals in meteorites; consequently, meteorites are proposed to be a main source of prebiotic reactive phosphorus on early Earth. Here, we propose an alternative source for widespread phosphorus reduction, arguing that lightning strikes on early Earth potentially formed 10–1000 kg of phosphide and 100–10,000 kg of phosphite and hypophosphite annually. Therefore, lightning could have been a significant source of prebiotic, reactive phosphorus which would have been concentrated on landmasses in tropical regions. Lightning strikes could likewise provide a continual source of prebiotic reactive phosphorus independent of meteorite flux on other Earth-like planets, potentially facilitating the emergence of terrestrial life indefinitely.

Date: 2021
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DOI: 10.1038/s41467-021-21849-2

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