We have broad interest in different questions on the ecology and evolution of microbial life, from the origin of microbial diversity and its evolution since life emerged on Earth to the role of microbial communities in biogeochemical cycles. We combine complementary approaches including the exploration of extant prokaryotic and eukaryotic diversity by metabarcoding analysis, metagenomics, single cell ‘omics’ and phylogenomics to infer microbial functions and to elucidate the order of emergence of the different microbial groups and unravel their early evolutionary history. We have also broad interdisciplinary questions, in particular at the biology-geology interface.
The DEEM team, initially co-founded by Puri Lopez-Garcia and David Moreira, is one of the seven research components in the Ecology, Systematics and Evolution unit (UMR 8079, CNRS – Université Paris-Saclay – AgroParisTech) now at the IDEEV site (Gif-sur-Yvette, France).
The sequences of organellar genomes of 25 red algae reveal independent size expansions due to intron proliferation.
Why we do not detect any life in the hypersaline and hyperacid brines of Dallol despite a high level of airborne contamination? We report a surprisingly rapid destruction of cells and DNA by these brines.
A new gene family diagnostic for Ca carbonate precipitation in cyanobacteria, a long-term collaboration with K. Benzerara and colleagues.
Latest on the alphaproteobacterial origin of mitochondria, work by Sergio in the framework of a collaboration between Dalhousie University and the DEEM team
Archaea make up to 99% of microbial communities in geothermally influenced hypersaline lakes from the Danakil Depression, Ethiopia
March 2022 - North of Chile: For several weeks, we have been sampling high altitude salt flats (‘salares’) and hot springs in the North of the Chilean Altiplano.
September 2021 - Iceland: a tour to collect diverse samples from hot springs across the island.
If you are a motivated graduate or PhD student or a young postdoc interested in our research activities and wishing to develop an original research project, please do not hesitate to contact us for an internship, a prospective position or to prepare an application to funding agencies.
March 2022: six DEEM team members leave for in a field trip to the Chilean altiplano
2022 - the DEEM team moves to the new IDEEV building at the Saclay plateau, an extended area of the Université Paris-Saclay
2021-2022: Chris Lane, from the university of Rhode Island, joins the DEEM team for a sabbatical stay.
DEEM team - Unité d’Ecologie, Systématique et Evolution
Site IDEEV 12 rue 128, 91190 Gif-sur-Yvette, France
Phone: +33 (0)1 69 15 76 08