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Université de Fribourg

The microbiome of the leaf surface of Arabidopsis protects against a fungal pathogen

Ritpitakphong, Unyarat ; Falquet, Laurent ; Vimoltust, Artit ; Berger, Antoine ; Métraux, Jean-Pierre ; L'Haridon, Floriane

In: New Phytologist, 2016, p. -

We have explored the importance of the phyllosphere microbiome in plant resistance in the cuticle mutants bdg (BODYGUARD) or lacs2.3 (LONG CHAIN FATTY ACID SYNTHASE 2) that are strongly resistant to the fungal pathogen Botrytis cinerea. The study includes infection of plants under sterile conditions, 16S ribosomal DNA sequencing of the phyllosphere microbiome, and isolation and high coverage...

Université de Fribourg

Taxonomy and phylogeny of the turtle Tropidemys langii Rütimeyer, 1873, based on new specimens from the Kimmeridgian of the Swiss Jura Mountains

Püntener, Christian ; Billon-Bruyat, Jean-Paul ; Bocat, Loïc ; Berger, Jean-Pierre ; Joyce, Walter G.

In: Journal of Vertebrate Paleontology, 2014, vol. 34, no. 2, p. 353–374

The fossil turtle Tropidemys langii is a representative of Plesiochelyidae, a traditionally recognized group of Late Jurassic turtles diagnosed by the presence of three cervical scutes and adapted to life in the sea. Tropidemys langii was previously only known from fossilized carapaces and, possibly, plastra from Europe, most notably the famous ‘Solothurn Turtle Limestone’ of Switzerland. Due...

Université de Fribourg

The position of the Rupelian/Chattian boundary in the southern Upper Rhine Graben based on new records of microfossils

Pirkenseer, Claudius ; Berger, Jean-Pierre ; Reichenbacher, Bettina

In: Swiss Journal of Geosciences, 2013, vol. 106, no. 2, p. 291–301

This study analyses the regressive phase of the marine Froidefontaine Subgroup and the subsequent fluvio-lacustrine Niederroedern formation in the southern Upper Rhine Graben during the Late Rupelian and the position of the Rupelian/Chattian boundary. The study is based on the sedimentary record and several microfossil groups from two boreholes, with a focus on new records of fish otoliths,...

Université de Fribourg

Un curieux microfossile de la Molasse oligocène de Suisse occidentale et de Haute-Savoie (France) = An enigmatic microfossil from the Oligocene Molasse deposits of Western Switzerland and Haute-Savoie (France)

Berger, Jean-Pierre ; Collinson, Margaret E. ; Weidmann, Marc

In: Swiss Journal of Geosciences, 2013, vol. 106, no. 2, p. 125–133

A re-analysis and new description of the incertae sedis Calcicarpinum? fallax is presented, and its Late Oligocene age and paleobiogeographical distribution is ascertained. It is identified as a nutlet of a Boraginaceae and is named Boraginocarpus fallax (Taugourdeau-Lantz & Rosset 1966) comb. nov.

Université de Fribourg

Large mammals from Rickenbach (Switzerland, reference locality MP29, Late Oligocene): biostratigraphic and palaeoenvironmental implications

Mennecart, Bastien ; Scherler, Laureline ; Hiard, Florent ; Becker, Damien ; Berger, Jean-Pierre

In: Swiss Journal of Palaeontology, 2012, vol. 131, no. 1, p. 161-181

Since the first exploitation of the Huppersandstones quarry of Rickenbach (Canton Solothurn, Switzerland) in 1898, many fossils of plants, molluscs, and vertebrates have been discovered. The study of the small mammals brought this locality to international recognition as the type locality for the European mammalian reference level MP29 (latest Oligocene). Our study reviews the terrestrial...

Université de Fribourg

Iberomeryx minor (Mammalia, Artiodactyla) from the Early Oligocene of Soulce (Canton Jura, NW Switzerland): systematics and palaeodiet

Mennecart, Bastien ; Becker, Damien ; Berger, Jean-Pierre

In: Swiss Journal of Geosciences, 2011, vol. 104, no. Suppl. 1, p. 115-132

The primitive ruminant genus Iberomeryx is poorly documented, as it is essentially only known from rare occurrences of dental remains. Therefore, the phylogeny and palaeobiology of Iberomeryx remain rather enigmatic. Only two species have been described: the type species I. parvus from the Benara locality in Georgia, and the Western European species I. minor reported from France, Spain, and...

Université de Fribourg

Reworked microfossils as a paleogeographic tool

Pirkenseer, Claudius ; Spezzaferri, Silvia ; Berger, Jean-Pierre

In: Geology, 2011, vol. 39, no. 9, p. 843-846

The abundant occurrence of reworked microfossils within the paleogeographically restricted Upper Rhine Graben of central Europe represents a unique opportunity to investigate their inherent information, allowing new insights into the paleogeographic framework and past sedimentary pathways. In the late Rupelian and early Chattian a transgression-regression cycle linked to the global Ru2–Ru3...