{"id":1086,"date":"2022-06-01T04:18:04","date_gmt":"2022-06-01T04:18:04","guid":{"rendered":"http:\/\/www.elsi.jp\/research\/research_fields_and_topics_old\/co_evolution_of_earth_life_system\/"},"modified":"2022-06-02T09:18:04","modified_gmt":"2022-06-02T09:18:04","slug":"co_evolution_of_earth_life_system","status":"publish","type":"page","link":"https:\/\/www.elsi.jp\/en\/research\/research_fields_and_topics_old\/co_evolution_of_earth_life_system\/","title":{"rendered":"Research Topic 4. Co-evolution of the Earth-Life System"},"content":{"rendered":"\r\n<p><span>Goals<\/span><\/p>\n<p style=\"margin-left: 10.5pt;\"><span>1) Determine initial\/minimal conditions for the emergence of oxygenic photosynthesis<\/span><\/p>\n<p style=\"margin-left: 10.5pt;\"><span>2) Decoding the chemistry of the early atmosphere and ocean<\/span><\/p>\n<p style=\"margin-left: 10.5pt;\"><span>* Speciation \/ metal concentration \/ redox state \/ pH<\/span><\/p>\n<p style=\"margin-left: 10.5pt;\"><span>* Redox evolution through S cycling and H cycling (H-escape)<\/span><\/p>\n<p style=\"margin-left: 10.5pt;\"><span>3) Reconstructing the history of metabolic evolution between LUCA and oxygenic photo-synthesis: Systematic microbiology<\/span><\/p>\n<p style=\"margin-left: 10.5pt;\"><span>4) Developing new isotopic proxies for testing (2) and (3) (e.g., intramolecular signatures)<\/span><\/p>\n<p style=\"margin-left: 10.5pt;\"><span>5) Coupling to thermo-chemical evolution of solid Earth (crust, mantle, and core) and the role of volcanic outgassing, hydrothermal circulation, magnetic field, etc.<\/span><\/p>\n<p><span>&nbsp;<\/span><\/p>\n<p style=\"text-align: left;\"><span>Redox evolution is a key to understand early evolution of the biosphere as well as the origin of life.<\/span><\/p>\n<p style=\"text-align: left;\"><span>&nbsp;<\/span><\/p>\n<p style=\"text-align: left;\"><span>We are trying to understand how the chemistry of the ocean and atmosphere changed through the combination of biological and geological co-evolutionary processes through interdisciplinary research based on geomicrobiology, evolutionary biology, genome analysis, geology and geochemistry.<\/span><\/p>\n<p style=\"text-align: left;\"><span>&nbsp;<\/span><\/p>\n<p style=\"text-align: left;\"><span>ELSI researchers are now developing new biogeochemical tracers for the chemistry of the early atmosphere and ocean, as well as trying to create proto-cyanobacteria artificially in the laboratory.<\/span><\/p>\n<p style=\"text-align: left;\"><span>&nbsp;<\/span><\/p>\n<p style=\"text-align: center;\"><span><img decoding=\"async\" alt=\"topic4\" src=\"\/-\/media\/Project\/Elsi-Tenants\/Elsi-Tenant\/Elsi\/site\/topic4.jpg?h=334&amp;w=500&amp;la=en&amp;hash=B3CC03F7673DCB2FAB0CAFD49107A2545EE1AFF6\" style=\"height: 334px; width: 500px;\" \/><\/span><\/p>\n<p style=\"text-align: center;\"><span>Isotope Ratio Mass Spectrometer<\/span><\/p>        ","protected":false},"excerpt":{"rendered":"Goals 1) Determine initial\/minimal conditions for the emergence of oxygenic photosynthesis 2) Decoding the chemistry of the early atmosphere and ocean * Speciation \/ metal concentration \/ redox state \/ pH * Redox evolution through S cycling and H cycling (H-escape) 3) Reconstructing the history of metabolic evolution between LUCA and oxygenic photo-synthesis: Systematic microbiology [&hellip;]","protected":false},"author":9,"featured_media":0,"parent":1083,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_locale":"en_US","_original_post":"http:\/\/www.elsi.jp\/?page_id=1085"},"acf":[],"_links":{"self":[{"href":"https:\/\/www.elsi.jp\/wp-json\/wp\/v2\/pages\/1086"}],"collection":[{"href":"https:\/\/www.elsi.jp\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.elsi.jp\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.elsi.jp\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/www.elsi.jp\/wp-json\/wp\/v2\/comments?post=1086"}],"version-history":[{"count":1,"href":"https:\/\/www.elsi.jp\/wp-json\/wp\/v2\/pages\/1086\/revisions"}],"predecessor-version":[{"id":1087,"href":"https:\/\/www.elsi.jp\/wp-json\/wp\/v2\/pages\/1086\/revisions\/1087"}],"up":[{"embeddable":true,"href":"https:\/\/www.elsi.jp\/wp-json\/wp\/v2\/pages\/1083"}],"wp:attachment":[{"href":"https:\/\/www.elsi.jp\/wp-json\/wp\/v2\/media?parent=1086"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}