Publications de Enrique Lara | EPFL Graph Search

Soil protist function varies with elevation in the Swiss Alps

Nicolas Jean Philippe Guex, Enrique Lara, Edward Mitchell, Aline Buri

Protists are abundant and play key trophic functions in soil. Documenting how their trophic contributions vary across large environmental gradients is essential to understand and predict how biogeochemical cycles will be impacted by global changes. Here, u ...

2022

Assessing the responses of Sphagnum micro-eukaryotes to climate changes using high throughput sequencing

Alexandre Buttler, Enrique Lara, Edward Mitchell, Mariusz Lamentowicz, Vincent Eric Jules Jassey

Current projections suggest that climate warming will be accompanied by more frequent and severe drought events. Peatlands store ca. one third of the world's soil organic carbon. Warming and drought may cause peatlands to become carbon sources through stim ...

PEERJ INC2020

Greater topoclimatic control of above‐ versus below‐ground communities

Nicolas Jean Philippe Guex, Enrique Lara, Edward Mitchell, Marco Pagni, Aline Buri, Loïc Pellissier

2020

Dispersal limitations and historical factors determine the biogeography of specialized terrestrial protists

Enrique Lara, Edward Mitchell, Bertrand Fournier, Luca Bragazza, Mariusz Lamentowicz

Recent studies show that soil eukaryotic diversity is immense and dominated by micro-organisms. However, it is unclear to what extent the processes that shape the distribution of diversity in plants and animals also apply to micro-organisms. Major diversif ...

WILEY2019

Tipping point in plant-fungal interactions under severe drought causes abrupt rise in peatland ecosystem respiration

Alexandre Buttler, Enrique Lara, Edward Mitchell, Luca Bragazza, Pierre Rémi Mariotte, Mariusz Lamentowicz, Vincent Eric Jules Jassey, Bjorn Jozef Maria Robroek

2018

Soil protistology rebooted: 30 fundamental questions to start with

Enrique Lara, Alexandre Jousset, Edward Mitchell, Thierry Jean Heger, Bertrand Fournier, Mariusz Lamentowicz, Santosh Kumar, Vincent Eric Jules Jassey

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 attentio ...

Pergamon-Elsevier Science Ltd2017

Genetic Determinism vs. Phenotypic Plasticity in Protist Morphology

Enrique Lara, Edward Mitchell, Mariusz Lamentowicz, Bjorn Jozef Maria Robroek

Untangling the relationships between morphology and phylogeny is key to building a reliable taxonomy, but is especially challenging for protists, where the existence of cryptic or pseudocryptic species makes finding relevant discriminant traits difficult. ...

Wiley2017

From Environmental Sequences to Morphology: Observation and Characterisation of a Paulinellid Testate Amoeba (Micropyxidiella edaphonis gen. nov. sp. nov. Euglyphida, Paulinellidae) from Soil using Fluorescent in situ Hybridization

Enrique Lara, Sonia Estelle Tarnawski

High microbial diversity is revealed by environmental DNA surveys. However, nothing is known about the morphology and function of these potentially new organisms. In the course of an environmental soil diversity study, we found for the first time environme ...

Elsevier2015

An unexpected role for mixotrophs in the response of peatland carbon cycling to climate warming

Alexandre Buttler, Enrique Lara, Edward Mitchell, Bertrand Fournier, Luca Bragazza, Robert Thomas Edmund Mills, Constant Signarbieux, Vincent Eric Jules Jassey, Bjorn Jozef Maria Robroek

Mixotrophic protists are increasingly recognized for their significant contribution to carbon (C) cycling. As phototrophs they contribute to photosynthetic C fixation, whilst as predators of decomposers, they indirectly influence organic matter decompositi ...

Nature Publishing Group2015

Functional traits as a new approach for interpreting testate amoeba palaeo-records in peatlands and assessing the causes and consequences of past changes in species composition

Enrique Lara, Edward Mitchell, Bertrand Fournier, Vincent Eric Jules Jassey

Subfossil remains of various groups of organisms preserved in peat and sediment archives are commonly used to infer past environmental changes using transfer functions based on species composition. However, the changes in community structure can also be ex ...

Sage Publications Ltd2015

COI Barcoding of Nebelid Testate Amoebae (Amoebozoa: Arcellinida): Extensive Cryptic Diversity and Redefinition of the Hyalospheniidae Schultze

Enrique Lara, Edward Mitchell, Thierry Jean Heger

We used Cytochrome Oxidase Subunit 1 (COI) to assess the phylogenetic relationships and taxonomy of Nebela sensu stricto and similar taxa (Nebela group, Arcellinida) in order to clarify the taxonomic validity of morphological characters. The COI data not o ...

2012

COI gene reveals size-dependent high dispersal and low intra-specific diversity in free-living terrestrial protists (Euglyphida; Assulina)

Enrique Lara, Edward Mitchell, Thierry Jean Heger

Aim Propagule size and ecological requirements are believed to be major factors influencing the passive dispersal of free-living terrestrial protists. We compared the colonization potential of three closely related testate amoeba species (Assulina muscoru ...

Wiley-Blackwell2011

Highly Diverse and Seasonally Dynamic Protist Community in a Pristine Peat Bog

Enrique Lara, Edward Mitchell

Culture-independent molecular methods based on the amplification, cloning and sequencing of small-subunit ribosomal RNA genes (SSU rDNAs) are powerful tools to study the diversity of microorganisms. Despite so, the eukaryotic microbial diversity of many ec ...

2011

Comparing COI and SSU rDNA barcodes for assessing the diversity and phylogenetic relationships of cyphoderiid testate amoebae (Rhizaria: Euglyphida)

Enrique Lara, Edward Mitchell, Thierry Jean Heger

The mitochondrial Cytochrome Oxidase Subunit 1 gene (COI) has been promoted as an ideal “DNA barcode” for animal species and other groups of eukaryotes. However, the utility of the COI marker for species level discrimination and for phylogenetic analyses h ...

2011

Application of the denaturing gradient gel electrophoresis (DGGE) technique as an efficient diagnostic tool for ciliate communities in soil

Enrique Lara, Alexandre Jousset

Ciliates (or Ciliophora) are ubiquitous organisms which can be widely used as bioindicators in ecosystems exposed to anthropogenic and industrial influences. The evaluation of the environmental impact on soil ciliate communities with methods relying on mor ...

2010

Molecular phylogeny of euglyphid testate amoebae (Cercozoa: Euglyphida) suggests transitions between marine supralittoral and freshwater/terrestrial environments are infrequent

Enrique Lara, Edward Mitchell, Thierry Jean Heger

Marine and freshwater ecosystems are fundamentally different regarding many biotic and abiotic parameters. The physiological adaptations required for an organism to pass the salinity barrier are considerable. Many eukaryotic lineages are restricted to eith ...

Elsevier2010

The Environmental Clade LKM11 and Rozella Form the Deepest Branching Clade of Fungi

Enrique Lara

Previous environmental surveys of eukaryotic diversity using the small subunit ribosomal RNA (SSU rRNA) gene have revealed many clone sequences that branch near the base of Fungi. In this work, we demonstrate that many of these sequences, including those o ...

2010

Ribosomal RNA Genes Challenge the Monophyly of the Hyalospheniidae (Amoebozoa: Arcellinida)

Enrique Lara, Edward Mitchell, Thierry Jean Heger, Mariusz Lamentowicz

To date only five partial and two complete SSU rRNA gene sequences are available for the lobose testate amoebae (Arcellinida). Consequently, the phylogenetic relationships among taxa and the definition of species are still largely dependant on morphologica ...

2008

Cultivation-independent analysis reveals a shift in ciliate 18S rRNA gene diversity in a polycyclic aromatic hydrocarbon-polluted soil

Enrique Lara

Oxford, Blackwell Publishing Ltd2007

SSU rRNA reveals a sequential increase in shell complexity among the Euglyphid testate amoebae (Rhizaria: Euglyphida)

Enrique Lara, Edward Mitchell, Thierry Jean Heger

2007