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DEEPADAPT SIGNED

The molecular drivers of deep-sea adaptation in brittle stars

Total Cost €

EC-Contrib. €

Partnership

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DEEPADAPT project word cloud

Explore the words cloud of the DEEPADAPT project. It provides you a very rough idea of what is the project "DEEPADAPT" about.

bathymetric life harsh scan resilience invertebrates metabolic molecular phylogenetic distantly 400 hints generation bottoms genealogical 120 taxa world shallow stress resequencing sea independently tools shifts transitions convergent adaptation genomics ongoing capture entire gt least colonized discordance underlying protein displaying examine genome intend quality spanning species decipher individuals genomes brittle positive exon keywords thirds environments dataset complexes little genes deciphering frequency 800 times evolution highlighting covers deep planet allele analytic adaptive mechanisms environmental reference adaptations analyzing abundant biodiversity purpose environment echinoderms depths group representative ocean phylogenomics ophiuroidea candidate marine stars first diversity water cryptic surprisingly

Project "DEEPADAPT" data sheet

The following table provides information about the project.

Coordinator	INSTITUT FRANCAIS DE RECHERCHE POUR L'EXPLOITATION DE LA MER Organization address address: 1625 ROUTE DE SAINTE ANNE ZONE INDUSTRIELLE DE LA POINTE DU DIABLE city: PLOUZANE postcode: 29280 website: http://www.ifremer.fr contact info title: n.a. name: n.a. surname: n.a. function: n.a. email: n.a. telephone: n.a. fax: n.a.
Coordinator Country	France [FR]
Total cost	270˙918 €
EC max contribution	270˙918 € (100%)
Programme	1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility)
Code Call	H2020-MSCA-IF-2017
Funding Scheme	MSCA-IF-GF
Starting year	2018
Duration (year-month-day)	from 2018-10-01 to 2022-01-20

Partnership

Take a look of project's partnership.

#	participants	country	role	EC contrib. [€]
1	INSTITUT FRANCAIS DE RECHERCHE POUR L'EXPLOITATION DE LA MER INSTITUT FRANCAIS DE RECHERCHE POUR L'EXPLOITATION DE LA MER Organization address address: 1625 ROUTE DE SAINTE ANNE ZONE INDUSTRIELLE DE LA POINTE DU DIABLE city: PLOUZANE postcode: 29280 website: http://www.ifremer.fr contact info title: n.a. name: n.a. surname: n.a. function: n.a. email: n.a. telephone: n.a. fax: n.a.	FR (PLOUZANE)	coordinator	270˙918.00
2	Museums Victoria Museums Victoria Organization address address: 11 Nicholson St, Carlton 3054 city: Melbourne postcode: 3001 website: n.a. contact info title: n.a. name: n.a. surname: n.a. function: n.a. email: n.a. telephone: n.a. fax: n.a.	AU (Melbourne)	partner	0.00

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Project objective

The deep-sea covers about two-thirds of the world’s ocean bottoms; yet, it is one of the least known environments of the planet. Given its harsh environmental conditions, life in high depths requires several specific metabolic adaptations. Surprisingly, little is known about the molecular mechanisms underlying adaptation to such environments. Which and how many genes are involved in adaptation? What is the extent of convergent evolution across distantly related taxa? Brittle stars (Ophiuroidea) are a useful group of marine invertebrates to study for this purpose, as they are abundant in the deep-sea and they colonized this environment several times independently, thus highlighting their strong adaptive abilities. Here, I intend to investigate deep-sea adaptation using a comparative genomics approach and state of the art analytic tools. I will first use an existing dataset to examine adaptive protein evolution (genealogical discordance and positive selection), by comparing 400 genes across 800 species of shallow- and deep-water brittle stars spanning the entire Ophiuroidea diversity. I will then focus on five cryptic species complexes representative of the major bathymetric transitions, by analyzing >10,000 genes generated from exon-capture and focusing on specific candidate genes. Finally, I will investigate allele frequency shifts among depths for two species displaying a wide bathymetric range using a genome scan approach (generation of two high-quality reference genomes; whole genome resequencing for 120 individuals). With these three approaches spanning a wide phylogenetic range, I intend to decipher the molecular mechanisms underlying deep-sea adaptation. This is of high importance because deciphering mechanisms of stress-driven adaptation may provide hints on the resilience of deep marine biodiversity to the ongoing environmental changes. Keywords: deep-sea; adaptation; phylogenomics; genome scan; positive selection; exon capture; Ophiuroidea; echinoderms

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