Philippe Deschamps
University of Paris-Sud
34Publications
22H-index
1,415Citations
Publications 34
Newest
Published on Feb 1, 2017in Current Biology 9.25
Rafael I. Ponce-Toledo1
Estimated H-index: 1
(University of Paris-Sud),
Philippe Deschamps22
Estimated H-index: 22
(University of Paris-Sud)
+ 3 AuthorsDavid Moreira52
Estimated H-index: 52
(University of Paris-Sud)
Summary Photosynthesis evolved in eukaryotes by the endosymbiosis of a cyanobacterium, the future plastid, within a heterotrophic host. This primary endosymbiosis occurred in the ancestor of Archaeplastida, a eukaryotic supergroup that includes glaucophytes, red algae, green algae, and land plants [1–4]. However, although the endosymbiotic origin of plastids from a single cyanobacterial ancestor is firmly established, the nature of that ancestor remains controversial: plastids have been proposed...
51 Citations Source Cite
Published on Nov 2, 2017in Journal of Experimental Botany 5.35
Justin Findinier1
Estimated H-index: 1
(Lille University of Science and Technology),
Hande Tunçay1
Estimated H-index: 1
(Lille University of Science and Technology)
+ 10 AuthorsGilles Peltier7
Estimated H-index: 7
(Commissariat à l'énergie atomique et aux énergies alternatives)
1 Citations Source Cite
Published on May 30, 2016in Frontiers in Microbiology 4.02
Marianne Simon4
Estimated H-index: 4
(Centre national de la recherche scientifique),
Purificación López-García10
Estimated H-index: 10
(Centre national de la recherche scientifique)
+ 4 AuthorsLudwig Jardillier1
Estimated H-index: 1
(Centre national de la recherche scientifique)
Small and shallow aquatic ecosystems such as ponds and streams constitute a significant proportion of continental surface waters, especially in temperate zones. In comparison with bigger lakes and rivers, they harbor higher biodiversity but they also exhibit reduced buffering capacity face to environmental shifts, such that climate global change can affect them in a more drastic way. For instance, many temperate areas are predicted to undergo droughts with increasing frequency in the near future...
9 Citations Source Cite
Published on Jan 1, 2015in Frontiers in Microbiology 4.02
Aurélien Saghaï4
Estimated H-index: 4
(University of Paris-Sud),
Yvan Zivanovic17
Estimated H-index: 17
(University of Paris-Sud)
+ 8 AuthorsAna Isabel López-Archilla11
Estimated H-index: 11
(Autonomous University of Madrid)
Cyanobacteria are thought to play a key role in carbonate formation due to their metabolic activity, but other organisms carrying out oxygenic photosynthesis (photosynthetic eukaryotes) or other metabolisms (e.g., anoxygenic photosynthesis, sulfate reduction), may also contribute to carbonate formation. To obtain more quantitative information than that provided by more classical PCR-dependent methods, we studied the microbial diversity of microbialites from the Alchichica crater lake (Mexico) by...
17 Citations Source Cite
Published on Jul 1, 2015in Nature Reviews Microbiology 31.85
Purificación López-García21
Estimated H-index: 21
,
Yvan Zivanovic17
Estimated H-index: 17
+ 1 AuthorsDavid Moreira52
Estimated H-index: 52
It is widely believed that the archaeal ancestor was hyperthermophilic, but during archaeal evolution, several lineages — including haloarchaea and their sister methanogens, the Thaumarchaeota, and the uncultured Marine Group II and Marine Group III Euryarchaeota (MGII/III) — independently adapted to lower temperatures. Recent phylogenomic studies suggest that the ancestors of these lineages were recipients of massive horizontal gene transfer from bacteria. Many of the acquired genes, which are ...
39 Citations Source Cite
Published on Oct 1, 2015in Environmental Microbiology 4.97
Marianne Simon4
Estimated H-index: 4
(University of Paris-Sud),
Ludwig Jardillier15
Estimated H-index: 15
(University of Paris-Sud)
+ 4 AuthorsPurificación López-García37
Estimated H-index: 37
(University of Paris-Sud)
Although inland water bodies are more heterogeneous and sensitive to environmental variation than oceans, the diversity of small protists in these ecosystems is much less well-known. Some molecular surveys of lakes exist, but little information is available from smaller, shallower and often ephemeral freshwater systems, despite their global distribution and ecological importance. We carried out a comparative study based on massive pyrosequencing of amplified 18S rRNA gene fragments of protists i...
28 Citations Source Cite
Published on Jan 1, 2015in Genome Biology and Evolution 3.94
Céline Petitjean3
Estimated H-index: 3
(University of Paris-Sud),
Philippe Deschamps22
Estimated H-index: 22
(University of Paris-Sud)
+ 1 AuthorsDavid Moreira52
Estimated H-index: 52
(University of Paris-Sud)
The first 16S rRNA-based phylogenies of the Archaea showed a deep division between two groups, the kingdoms Euryarchaeota and Crenarchaeota. This bipartite classification has been challenged by the recent discovery of new deeply branching lineages (e.g., Thaumarchaeota, Aigarchaeota, Nanoarchaeota, Korarchaeota, Parvarchaeota, Aenigmarchaeota, Diapherotrites, and Nanohaloarchaeota) which have also been given the same taxonomic status of kingdoms. However, the phylogenetic position of some of the...
52 Citations Source Cite
Published on Feb 27, 2015in Frontiers in Microbiology 4.02
Kamil M. Szafranski4
Estimated H-index: 4
(University of Paris),
Philippe Deschamps22
Estimated H-index: 22
(University of Paris-Sud)
+ 2 AuthorsSébastien Duperron1
Estimated H-index: 1
(Institut Universitaire de France)
Reducing conditions with elevated sulphide and methane concentrations in ecosystems such as hydrothermal vents, cold seeps or organic falls, are suitable for chemosynthetic primary production. Understanding processes driving bacterial diversity, colonization and dispersal is of prime importance for deep-sea microbial ecology. This study provides a detailed characterization of bacterial assemblages colonizing plant-derived substrates using a standardised approach over a geographic area spanning t...
5 Citations Source Cite
Published on May 1, 2015in Molecular Biology and Evolution 10.22
Céline Petitjean3
Estimated H-index: 3
(University of Paris-Sud),
Philippe Deschamps22
Estimated H-index: 22
(University of Paris-Sud)
+ 2 AuthorsCéline Brochier-Armanet33
Estimated H-index: 33
(University of Lyon)
Initial studies of the archaeal phylogeny relied mainly on the analysis of the RNA component of the small subunit of the ribosome (SSU rRNA). The resulting phylogenies have provided interesting but partial information on the evolutionary history of the third domain of life because SSU rRNA sequences do not contain enough phylogenetic signal to resolve all nodes of the archaeal tree. Thus, many relationships, and especially the most ancient ones, remained elusive. Moreover, SSU rRNA phylogenies c...
26 Citations Source Cite
Published on Sep 1, 2015in The ISME Journal 9.52
Marianne Simon4
Estimated H-index: 4
,
Purificación López-García21
Estimated H-index: 21
+ 4 AuthorsLudwig Jardillier15
Estimated H-index: 15
Marked seasonality and high spatial variability of protist communities in shallow freshwater systems
33 Citations Source Cite
1234