CLAPO

The Coevolution of Life and Arsenic in Precambrian Oceans

Coordinatore	STOCKHOLMS UNIVERSITET    more Spiacenti, non ci sono informazioni su questo coordinatore. Contattare Fabio per maggiori infomrazioni, grazie.
Nazionalità Coordinatore	Sweden [SE]
Totale costo	1˙486˙374 €
EC contributo	1˙486˙374 €
Programma	FP7-IDEAS-ERC Specific programme: "Ideas" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013)
Code Call	ERC-2013-StG
Funding Scheme	ERC-SG
Anno di inizio	2013
Periodo (anno-mese-giorno)	2013-09-01   -   2018-08-31

 Partecipanti

#	participant	country	role	EC contrib. [€]
1	STOCKHOLMS UNIVERSITET  Organization address address: Universitetsvaegen 10 city: STOCKHOLM postcode: 10691 contact info Titolo: Dr. Nome: Ernest Cognome: Chi Fru Email: send email Telefono: +46 8 51954182 Fax: +46 8 6747897	SE (STOCKHOLM)	hostInstitution	1˙486˙374.00
2	STOCKHOLMS UNIVERSITET  Organization address address: Universitetsvaegen 10 city: STOCKHOLM postcode: 10691 contact info Titolo: Ms. Nome: Margita Cognome: Jensen Email: send email Telefono: +46 8 164732	SE (STOCKHOLM)	hostInstitution	1˙486˙374.00

Mappa

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 Obiettivo del progetto (Objective)

'The ubiquity of arsenic resistant genes across all of life’s variety suggests a close intimacy between arsenic biogeochemistry and evolution, over geological time scales. However, the behaviour of arsenic in past environments where life originated and its impact on our evolution is essentially unknown. Arsenic is of particular importance because of its toxic properties, prevalence in tight association with ubiquitous iron and sulfide minerals and as a major component of sulfide-rich waters, all common features of Precambrian oceans. Arsenic obstructs the synthesis of the building blocks of life, exhibiting both chronic and acute toxicity at very low concentrations. These properties make arsenic an agent capable of exerting strong selective pressure on the distribution, success and diversity of life. This is exemplified by when the release of arsenic into groundwater following rock-weathering processes results in widespread poisoning. Using the state of the art stable isotopes tools, coupled to biomass production, bacterial iron, arsenic and sulfur cycling under ancient oceanic conditions, this project will open a new discussion on the much debated relationship between ocean chemistry and evolution, by introducing a new arsenic framework. This will be achieved under three majors themes: 1) Does there exist a biogeochemical connection between arsenic and the timing and transition from the iron-rich to the hypothesized sulfide-rich oceans that are linked to the rise of atmospheric oxygen? 2) Does arsenic and sulfide show concomitant cyclicity during the Precambrian? 3) Could arsenic thus serve as a proxy for the calibration of key transitional steps in the timing of biological innovation?'