Accès public à partir du 1 mars 2019
Université de Neuchâtel

Soil chemistry changes beneath decomposing cadavers over a one-year period

Szelecz, Ildikò ; Koenig, Isabelle ; Seppey, Christophe V. W ; Le Bayon, Renée-Claire ; Mitchell, Edward A. D

In: Forensic Science International, 2018, vol. 286, p. 155-165

Decomposing vertebrate cadavers release large, localized inputs of nutrients. These temporally limited resource patches affect nutrient cycling and soil organisms. The impact of decomposing cadavers on soil chemistry is relevant to soil biology, as a natural disturbance, and forensic science, to estimate the postmortem interval. However, cadaver impacts on soils are rarely studied, making it...

Université de Neuchâtel

Parasites dominate hyperdiverse soil protist communities in Neotropical rainforests

Mahé, Frédéric ; de Vargas, Colomban ; Bass, David ; Czech, Lucas ; Stamatakis, Alexandros ; Lara, Enrique ; Singer, David ; Mayor, Jordan ; Bunge, John ; Sernaker, Sarah ; Siemensmeyer, Tobias ; Trautmann, Isabelle ; Romac, Sarah ; Berney, Cédric ; Kozlov, Alexey ; Mitchell, Edward A. D ; Seppey, Christophe V. W ; Egge, Elianne ; Lentendu, Guillaume ; Wirth, Rainer ; Trueba, Gabriel ; Dunthorn, Micah

In: NATURE ECOLOGY & EVOLUTION, 2017, vol. 1, no. art no 0091, p. 1-8

High animal and plant richness in tropical rainforest communities has long intrigued naturalists. It is unknown if similar hyperdiversity patterns are reflected at the microbial scale with unicellular eukaryotes (protists). Here we show, using environmental metabarcoding of soil samples and a phylogeny-aware cleaning step, that protist communities in Neotropical rainforests are hyperdiverse and...

Accès public à partir du 15 août 2018
Université de Neuchâtel

Mycamoeba gemmipara nov. gen., nov. sp., the First Cultured Member of the Environmental Dermamoebidae Clade LKM74 and its Unusual Life Cycle

Blandenier, Quentin ; Seppey, Christophe V. W ; Singer, David ; Vlimant, Michèle ; Simon, Anaële ; Duckert, Clément ; Lara, Enrique

In: Journal of Eukaryotic Microbiology, 2017, vol. 64, no. 2, p. 257-265

Since the first environmental DNA surveys, entire groups of sequences called “environmental clades” did not have any cultured representative. LKM74 is an amoebozoan clade affiliated to Dermamoebidae, whose presence is pervasively reported in soil and freshwater. We obtained an isolate from soil that we assigned to LKM74 by molecular phylogeny, close related to freshwater clones. We described...