References of "Javaux, Emmanuelle"
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See detailChronomètres et échelles de durée.
De Wever, Patrick; Douzery, Emmanuel; Ekstrom, Sylvia et al

in Gargaud, Muriel; Lecointre, Guillaume (Eds.) l’Evolution : de l’univers aux sociétés, objets et concepts. (2015)

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See detailPlanète Terre et système Terre
Martin, Hervé; Bibring, jean-Pierre; de Wever, Patrick et al

in Gargaud, M; Lecointre, G (Eds.) l’Evolution : de l’univers aux sociétés, objets et concepts. (2015)

Detailed reference viewed: 24 (1 ULiège)
See detailLipid analysis on a putative early land plant and its matrix: Preliminary results
Versteegh, Gerath J.M.; Cascales-Miñana, Borja ULiege; Gerrienne, Philippe ULiege et al

Conference (2015, October)

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See detailRaman characterization of the UV-protective pigment gloeocapsin and its role in the survival of cyanobacteria
Storme, Jean-Yves ULiege; Golubic, Stjepko; Wilmotte, Annick ULiege et al

Conference (2015, August 21)

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See detailContribution of cyanobacteria to the building of travertines in a calcareous stream
Wilmotte, Annick ULiege; Golubic, Stjepko; Kleinteich, Julia et al

Poster (2015, August 03)

The ambient temperature travertine deposits of the calcareous Hoyoux River (Modave, Belgium) and several tributaries are organized and promoted by the filamentous cyanobacterium identified by its ... [more ▼]

The ambient temperature travertine deposits of the calcareous Hoyoux River (Modave, Belgium) and several tributaries are organized and promoted by the filamentous cyanobacterium identified by its morphotype and ecological properties as Phormidium cf. incrustatum. A combination of techniques was used to study this biotope: physico-chemical parameters and CO2 measurements, Scanning and Transmission Electron Microscopy, RAMAN microspectroscopy. A molecular diversity study with pyrosequencing of the cyanobacterial 16S rRNA is in progress. A potential candidate was isolated in culture. [less ▲]

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See detailLa vie ailleurs ?
Javaux, Emmanuelle ULiege

Conference given outside the academic context (2015)

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See detailEarly evolution of large micro-organisms with cytological complexity revealed by microanalyses of 3.4 Ga organic-walled microfossils.
Sugitani; Mimura, K; Takeuchi, M et al

in Geobiology (2015)

Detailed reference viewed: 25 (3 ULiège)
See detailqu’est-ce qu’une planète ou lune habitable ?
Javaux, Emmanuelle ULiege

Conference given outside the academic context (2015)

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See detailPaleobiology and evolution of early eukaryotes
Javaux, Emmanuelle ULiege

Scientific conference (2015, April 22)

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See detailInterpreting the record of early eukaryotes.
Javaux, Emmanuelle ULiege

Conference (2015, March)

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See detailCyanobacteria - the constructors of travertines?
Kleinteich, Julia; Stelmach Pessi, Igor ULiege; Velazquez, David et al

Conference (2015, February)

Cyanobacteria are participating in carbonate build-up and travertine formation in the Belgian river Hoyoux and its tributaries. In this study, we sampled calcareous material from travertines and oncoliths ... [more ▼]

Cyanobacteria are participating in carbonate build-up and travertine formation in the Belgian river Hoyoux and its tributaries. In this study, we sampled calcareous material from travertines and oncoliths from four sampling sites on the Hoyoux river and Triffoy brook. In addition, the water chemistry was determined. The structure of the material was analyzed by Scanning Electron Microscopy and Raman microscopy (?°. The dominant cyanobacterial species was isolated and identified on the basis of microscopic observation and amplification of the 16S-ITS fragment as Phormidium sp., likely functioning as the ‘architect’ of the travertine system. In order to describe the full diversity of the travertine system and to discriminate between the active fraction and inactive or dead organic matter, DNA as well as RNA was extracted from the travertine material, amplified using cyanobacteria specific primers and sequenced by 454 pyrosequencing. To detect seasonal changes in the biological activity, summer and winter time points were compared. This study reveals the ecology of an overlooked environment in Belgian river systems and tries to explain the build-up of travertines. [less ▲]

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See detailRaman characterization of the UV-protective pigment gloeocapsin and its role in the survival of cyanobacteria
Storme, Jean-Yves ULiege; Golubic, Stjepko; Wilmotte, Annick ULiege et al

in Astrobiology (2015), 15(10),

Extracellular UV-screening pigments gloeocapsin and scytonemin present in the EPS envelopes of extremophile cyanobacteria of freshwater and marine environments were studied by Raman spectroscopy and ... [more ▼]

Extracellular UV-screening pigments gloeocapsin and scytonemin present in the EPS envelopes of extremophile cyanobacteria of freshwater and marine environments were studied by Raman spectroscopy and compared to their intracellular photosynthetic pigments. This Raman spectral analysis of the extracellular pigment gloeocapsin showed that it shared Raman spectral signatures with parietin, a radiation-protective pigment known in lichens. The UV-light spectra also showed similarities. Gloeocapsin occurs in some cyanobacterial species, mostly with exclusion of scytonemin, indicating that these pigments have evolved in cyanobacteria as separate protective strategies. Both gloeocapsin and scytonemin are widely and species-specifically distributed in different cyanobacterial genera and families. The widespread occurrence of these pigments may suggest an early origin, while their detection by Raman Spectroscopy makes them potential biosignatures for cyanobacteria in the fossil record and demonstrates the usefulness of non-destructive Raman spectroscopy analyses for the search of complex organics, including possible photosynthetic pigments, if preservable in early Earth and extraterrestrial samples. [less ▲]

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See detailTowards a palaeoecological model of the Mesoproterozoic Taoudeni basin
Beghin, Jérémie ULiege; Poulton, Simon; Gueneli, Nur et al

Conference (2015)

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See detailSpecie-specific intracellular iron biomineralization in a 1.9 Ga microfossil assemblage
Lepot, kevin; Addad, Ahmed; Knoll, AH et al

Conference (2015)

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See detailBiostratigraphic and chemostratigraphic constraints of the Mbuji-Mayi Supergroup, Democratic Republic of Congo
Kabamba Baludikay, Blaise ULiege; Bekker, Andrey; Baudet, Daniel et al

Poster (2014, December 16)

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See detailBIODIVERSITY AND REDOX CONDITIONS THROUGH THE PROTEROZOIC TAOUDENI BASIN OF MAURITANIA
Beghin, Jérémie ULiege; Poulton, Simon; Gueneli, Nur et al

Scientific conference (2014, November 03)

Detailed reference viewed: 31 (2 ULiège)