Université de Neuchâtel

Testate Amoebae Like It Hot : Species Richness Decreases Along a Subalpine-Alpine Altitudinal Gradient in Both Natural Calluna vulgaris Litter and Transplanted Minuartia sedoides Cushions

Heger, Thierry J ; Derungs, Nicolas ; Theurillat, Jean-Paul ; Mitchell, Edward A. D

In: Microbial Ecology, 2016, vol. 71, no. 3, p. 725-734

Most groups of higher organisms show a decrease in species richness toward high altitude, but the existence of such a pattern is debated for micro-eukaryotes. Existing data are scarce and mostly confounded with the diversity of habitats that also decreases with elevation. In order to disentangle these two factors, one approach is to consider only similar types of habitats occurring across an...

Université de Neuchâtel

Soil protistology rebooted : 30 fundamental questions to start with

Geisen, Stefan ; Mitchell, Edward A.D ; Wilkinson, David M ; Adl, Sina ; Bonkowski, Michael ; Brown, Matthew W ; Fiore-Donno, Anna Maria ; Heger, Thierry J ; Jassey, Vincent E.J ; Krashevska, Valentyna ; Lahr, Daniel J.G ; Marcisz, Katarzyna ; Mulot, Matthieu ; Payne, Richard ; Singer, David ; Anderson, Roger O ; Charman, Dan J ; Ekelund, Flemming ; Griffiths, Bryan S ; Rønn, Regin ; Smirnov, Alexey ; Bass, David ; Belbahri, Lassaâd ; Berney, Cédric ; Blandenier, Quentin ; Chatzinotas, Antonis ; Clarholm, Marianne ; Dunthorn, Micah ; Feest, Alan ; Fernández, Leonardo D ; Foissner, Wilhelm ; Fournier, Bertrand ; Gentekaki, Eleni ; Hájek, Michal ; Helder, Johannes ; Jousset, Alexandre ; Koller, Robert ; Kumar, Santosh ; La Terza, Antonietta ; Lamentowicz, Mariusz ; Mazei, Yuri ; Santos, Susana S ; Seppey, Christophe V.W ; Spiegel, Frederick W ; Walochnik, Julia ; Winding, Anne ; Lara, Enrique

In: Soil Biology & Biochemistry, 2017, vol. 111, no. 94-103, p. 2017

Protists are the most diverse eukaryotes. These microbes are keystone organisms of soil ecosystems and regulate essential processes of soil fertility such as nutrient cycling and plant growth. Despite this, protists have received little scientific attention, especially compared to bacteria, fungi and nematodes in soil studies. Recent methodological advances, particularly in molecular biology...

Université de Neuchâtel

One Alga to Rule them All: Unrelated Mixotrophic Testate Amoebae (Amoebozoa, Rhizaria and Stramenopiles) Share the Same Symbiont (Trebouxiophyceae)

Gomaa, Fatma ; Kosakyan, Anush ; Heger, Thierry J ; Corsaro, Daniele ; Mitchell, Edward A.D ; Lara, Enrique

In: Protist, 2013, vol. 165, no. 2, p. 161-176

Endosymbiosis is a central and much studied process in the evolution of eukaryotes. While plastid evolution in eukaryotic algae has been extensively studied, much less is known about the evolution of mixotrophy in amoeboid protists, which has been found in three of the five super groups of Eukaryotes. We identified the green endosymbionts in four obligate mixotrophic testate amoeba species...