Concept

Protista

Publications associées (31)

Mitochondrial stress signalling and its impacts on physiology

Mitochondria are responsible for respiration and energy harvesting across the eukaryotic kingdom. They also take part in other cellular processes like intermediary metabolism. As a result, mitochondrial function directly impacts organismal features such as ...

EPFL2018

Soil protistology rebooted: 30 fundamental questions to start with

Vincent Eric Jules Jassey, Enrique Lara

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

Sequestered Chloroplasts In The Benthic Foraminifer Haynesina Germanica: Cellular Organization, Oxygen Fluxes And Potential Ecological Implications

Emmanuelle Geslin, Charlotte Madeleine Nicole Lekieffre

Haynesina germanica is a coastal benthic foraminifer known to sequester chloroplasts from benthic pennate diatoms. This study investigates its cellular organization, as well as the oxygen consumption and production rates under dark and light conditions. Th ...

2017

Genetic Determinism vs. Phenotypic Plasticity in Protist Morphology

Bjorn Jozef Maria Robroek, Enrique Lara

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

Correlated TEM-NanoSIMS investigation of foraminiferal metabolism

Charlotte Madeleine Nicole Lekieffre

Foraminifera are ubiquitous eukaryotic protists inhabiting all types of marine environments. The chemical and isotopic compositions of their carbonate tests are commonly used as proxies for paleo-environmental conditions. However, while foraminifera repres ...

EPFL2017

Structured light enables biomimetic swimming and versatile locomotion of photoresponsive soft microrobots

Tian Qiu

Microorganisms move in challenging environments by periodic changes in body shape. In contrast, current artificial microrobots cannot actively deform, exhibiting at best passive bending under external fields. Here, by taking advantage of the wireless, scal ...

Nature Publishing Group2016

Castles fall from inside: Evidence for dominant internal photo-catalytic mechanisms during treatment of Saccharomyces cerevisiae by photo-Fenton at near-neutral pH

César Pulgarin, Sami Rtimi, Stefanos Giannakis, Cristina del Socorro Lonfat

In this work, the antimicrobial effects of the photo-Fenton process on yeast cells were tested (Saccharomyces cerevisiae), an essential eukaryotic unicellular model of living cells. Near-neutral pH was used in all studies, while iron sulfate and iron citra ...

Elsevier2016

Cell proliferation and migration during early development of a symbiotic scleractinian coral

Anders Meibom, Isabelle Domart-Coulon, Agathe Eliette Marie Lecointe

In scleractinian reef-building corals, patterns of cell self-renewal, migration and death remain virtually unknown, limiting our understanding of cellular mechanisms underlying initiation of calcification, and ontogenesis of the endosymbiotic dinoflagellat ...

Royal Soc2016

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, Vincent Eric Jules Jassey, Luca Bragazza, Bjorn Jozef Maria Robroek, Constant Signarbieux, Enrique Lara, Robert Thomas Edmund Mills

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

An intracellular replication niche for Vibrio cholerae in the amoeba Acanthamoeba castellanii

Melanie Blokesch, Catherine Maclachlan, Charles Ulric V Van der Henst

Vibrio cholerae is a human pathogen and the causative agent of cholera. The persistence of this bacterium in aquatic environments is a key epidemiological concern, as cholera is transmitted through contaminated water. Predatory protists, such as amoebae, a ...

Nature Publishing Group2015