References of "Javaux, Emmanuelle"
     in
Bookmark and Share    
Full Text
See detailA Phylogenomic analysis of the origin of plastids
Cornet, Luc ULg; Javaux, Emmanuelle ULg; Wilmotte, Annick ULg et al

Conference (2014, June 24)

Cyanobacteria are a morphologically diverse phylum, with their first occurrence dating from the Precambrian. Oxygenic photosynthesis appeared in this group during the same geological period. Several ... [more ▼]

Cyanobacteria are a morphologically diverse phylum, with their first occurrence dating from the Precambrian. Oxygenic photosynthesis appeared in this group during the same geological period. Several publications have established, without any doubt, that plastids (both primary and complex) form a monophyletic ensemble emerging from Cyanobacteria. However, the exact position of plastids within Cyanobacteria is still uncertain, with several recent papers leading to very different hypotheses. Here we present a phylogenomic analysis of the origin of plastids. Our study takes advantage of all the available genomes and thus represents the best taxonomic sampling seen so far: 140 genomes of Cyanobacteria, 101 genomes of plastids and 27 outgroups taken in Melainabacteria and Chloroflexi. It results in an analysis using state-of-the-art methods (e.g., orthology assessment using USEARCH and OrthoMCL, phylogenetic inference using CAT and CAT-GTR models) based on more than 160 protein alignments totalizing over 20,000 unambiguously aligned amino acids. To confirm our results, we performed gene jackknife inferences and gene reconciliation analyses on the same dataset. We expect that out approach accounts for potential phylogenetic artefacts due to changes in the evolutionary process having occurred when the guest cyanobacterium became an endosymbiont and eventually a plastid. Meanwhile, we improve the phylogeny of Cyanobacteria per se, notably because of the presence of Melainabacteria in our dataset. [less ▲]

Detailed reference viewed: 42 (6 ULg)
Full Text
See detailMicrofossils’ diversity from the Proterozoic Taoudeni Basin, Mauritania
Beghin, Jérémie ULg; Javaux, Emmanuelle ULg; Houzay, Jean-Pierre et al

in European Geosciences Union General Assembly 2014 Vienna, Austria, 27 April – 02 May 2014 (abstract book) (2014, April 27)

Detailed reference viewed: 16 (1 ULg)
Full Text
Peer Reviewed
See detailMicropaleontology and chemostratigraphy of the Neoproterozoic Mbuji-Mayi Supergroup, Democratic Republic of Congo.
Kabamba Baludikay, Blaise ULg; Bekker, Andrey; Baudet, Daniel et al

in Geophysical Research Abstracts (2014), 16(EGU2014),

Detailed reference viewed: 30 (1 ULg)
Peer Reviewed
See detailThe « boring billion » : an exciting time for early eukaryotes !
Javaux, Emmanuelle ULg; Beghin, Jérémie ULg; Houzay, JP et al

Conference (2013, August)

Detailed reference viewed: 41 (10 ULg)
See detailThe first three billion years of life Evolution
Javaux, Emmanuelle ULg

Conference (2013, June)

Detailed reference viewed: 18 (3 ULg)
Full Text
Peer Reviewed
See detailPlanet TOPERS: Planets, Tracing the Transfer, Origin, Preservation, and Evolution of Their Reservoirs
Dehant, V.; Van Hoolst, T.; Breuer, D. et al

in Geophysical Research Abstracts (2013, April), 15

An overview is given of the Planet TOPERS project addressing habitability in our solar system.

Detailed reference viewed: 19 (5 ULg)
See detailL’eau dans l’univers
Jehin, Emmanuel ULg; Javaux, Emmanuelle ULg; Magain, Pierre ULg et al

Conference given outside the academic context (2013)

Detailed reference viewed: 26 (3 ULg)
Full Text
Peer Reviewed
See detailMid and late Holocene dust deposition in Western Europe: The Misten peat bog (Hautes Fagnes - Belgium)
Allan, Mouhamd ULg; Beghin, Jérémie ULg; le roux, Gael et al

in Climate of the Past (2013), 9(2889-2928,),

Dust deposition in southern Belgium is estimated from the geochemical signature of an ombrotrophic peatland. The Rare Earth Elements (REE) and lithogenic elements concentrations, as well as Nd isotopes ... [more ▼]

Dust deposition in southern Belgium is estimated from the geochemical signature of an ombrotrophic peatland. The Rare Earth Elements (REE) and lithogenic elements concentrations, as well as Nd isotopes, were determined by HR-ICP-MS and MC-ICP-MS respectively, along a  6 m peat section covering 5300 years, from 2000 to 7300 cal.BP dated by the 14C method. Changes in REE concentration in the peat correlate with those of Ti, Al, Sc and Zr that are lithogenic conservative elements, suggesting that REE are immobile in the studied peat bogs and can be used as tracers of dust deposition. Peat humification and testate amoebae were used to evaluate hydroclimatic conditions. The range of dust deposition varied from 0.03 to 4.0 g m-2 yr-1. The highest dust fluxes were observed from 2750 to 2550 cal.BP and from 5150 to 4750 cal.BP and correspond to cold periods. The Nd values show a large variability from -13 to –5, identifying three major sources of dusts: local soils, distal volcanic and desert particles. [less ▲]

Detailed reference viewed: 46 (17 ULg)
Full Text
Peer Reviewed
See detailIdentifying early Earth microfossils in unsilicified sediments
Javaux, Emmanuelle ULg; Asael, Dan; Bekker, Andrey et al

in Geophysical Research Abstracts (2013), 15

Detailed reference viewed: 39 (9 ULg)
See detailLes trois premiers miliards d’années d’évolution de la vie
Javaux, Emmanuelle ULg

Conference (2012, December 07)

Detailed reference viewed: 11 (0 ULg)
See detailHow did I become a scientist
Javaux, Emmanuelle ULg

Conference given outside the academic context (2012)

Detailed reference viewed: 10 (0 ULg)
See detailLes trois premiers miliards d’années d’évolution de la vie
Javaux, Emmanuelle ULg

Scientific conference (2012, October 06)

Detailed reference viewed: 9 (0 ULg)
Full Text
See detailA climate model from 200 AD to 1200 AD for the Hautes-Fagnes plateau (East Belgium) : based on pollen grains, testate amoebae, and humification analyses
Beghin, Jérémie ULg; Fagel, Nathalie ULg; Gerrienne, Philippe ULg et al

Poster (2012, September 12)

Several peat cores were extracted from the Misten bog, on the Hautes-Fagnes plateau (East Belgium). Analyses of pollen grains, testate amoebae and the degree of peat humification have been standardised ... [more ▼]

Several peat cores were extracted from the Misten bog, on the Hautes-Fagnes plateau (East Belgium). Analyses of pollen grains, testate amoebae and the degree of peat humification have been standardised and combined into a palaeo-hydro-climatic model from 200 AD to 1200 AD. The reconstruction shows 9 distinctive phases of near-surface water tables, which may be used to infer changes in the atmospheric water balance of eastern Belgium during the Subatlantic stage. [less ▲]

Detailed reference viewed: 65 (31 ULg)
Peer Reviewed
See detailThe diversification of early eukaryotes
Javaux, Emmanuelle ULg

Conference (2012, September)

Detailed reference viewed: 5 (0 ULg)
Full Text
See detailEn quête de signatures de vie...
Javaux, Emmanuelle ULg

Article for general public (2012)

Detailed reference viewed: 48 (5 ULg)
Full Text
Peer Reviewed
See detailThe Proterozoic record of early eukaryotes
Javaux, Emmanuelle ULg

Conference (2012, August)

Detailed reference viewed: 34 (6 ULg)
Full Text
Peer Reviewed
See detailThe end of a myth:Arpylorus antiquus Paleozoic dinoflagellate
Le Hérissé, Alain; Masure, Edwige; Javaux, Emmanuelle ULg et al

in PALAIOS (2012), 27

Detailed reference viewed: 22 (3 ULg)
Full Text
Peer Reviewed
See detailFrom meteorites to evolution and habitability of planets
Dehant, Véronique; Breuer, Doris; Claeys, Philippe et al

in Planetary and Space Science (2012)

Detailed reference viewed: 34 (6 ULg)
Full Text
See detailles débuts de la vie sur la terre et ailleurs?
Javaux, Emmanuelle ULg

Conference given outside the academic context (2012)

Detailed reference viewed: 20 (4 ULg)
See detailHabitabilité et biosignatures, de la Terre à l'espace
Javaux, Emmanuelle ULg

Scientific conference (2012, May 03)

Detailed reference viewed: 20 (4 ULg)