Publications de Stéphane Laurent Escrig

Cooling rates and melt extraction timescales determined by diffusion chronometry on shallow crustal plutonic rocks

Diffusion chronometry has emerged as a valuable tool to track the timescales of magmatic processes and is now routinely applied on erupted volcanic products to infer crystal residence times and mixing-to-eruption timescales. Despite some attempts to apply ...

2025

Elemental cryo-imaging reveals SOS1-dependent vacuolar sodium accumulation

Cristina Martin Olmos, Anders Meibom, Stéphane Laurent Escrig, Priya Ramakrishna

Increasing soil salinity causes significant crop losses globally; therefore, understanding plant responses to salt (sodium) stress is of high importance. Plants avoid sodium toxicity through subcellular compartmentation by intricate processes involving a h ...

NATURE PORTFOLIO2025

Host-derived organic acids enable gut colonization of the honey bee symbiont Snodgrassella alvi

Anders Meibom, Stéphane Laurent Escrig

Diverse bacteria can colonize the animal gut using dietary nutrients or by engaging in microbial crossfeeding interactions. Less is known about the role of host-derived nutrients in enabling gut bacterial colonization. Here we examined metabolic interactio ...

Nature Portfolio2024

Fossil biocalcite remains open to isotopic exchange with seawater for tens of millions of years

Cristina Martin Olmos, Anders Meibom, Stéphane Laurent Escrig, Jaroslaw Hubert Stolarski, Arthur Adams, Deyanira Graciela Cisneros Lazaro

Fossilized remains of marine calcifiers constitute the physical basis for reconstructions of both deep ocean and sea-surface temperatures going back millions of years, but paleoclimate records derived from their isotope and trace-element chemistry can be b ...

Springer Nature2024

Host starvation and in hospite degradation of algal symbionts shape the heat stress response of the Cassiopea-Symbiodiniaceae symbiosis

Cristina Martin Olmos, Anders Meibom, Stéphane Laurent Escrig, Gaëlle Delphine Toullec, Nils Rädecker, Claudia Isabella Pogoreutz, Guilhem Maurice Louis Banc-Prandi

Background
Global warming is causing large-scale disruption of cnidarian-Symbiodiniaceae symbioses fundamental to major marine ecosystems, such as coral reefs. However, the mechanisms by which heat stress perturbs these symbiotic partnership ...

Springer Science and Business Media LLC2024

Early precipitated micropyrite in microbialites: A capsule of microbial sulfur cycling (vol 21, pg 7, 2022)

Anders Meibom, Stéphane Laurent Escrig

European Assoc Geochemistry2024

Coupled carbon and nitrogen cycling regulates the cnidarian–algal symbiosis

Anders Meibom, Stéphane Laurent Escrig, Nils Rädecker

Efficient nutrient recycling underpins the ecological success of cnidarian-algal symbioses in oligotrophic waters. In these symbioses, nitrogen limitation restricts the growth of algal endosymbionts in hospite and stimulates their release of photosynthates ...

Nature Research2023

Data for "Host starvation and in hospite degradation of algal symbionts shape the heat stress response of the Cassiopea-Symbiodiniaceae symbiosis"

Cristina Martin Olmos, Anders Meibom, Stéphane Laurent Escrig, Gaëlle Delphine Toullec, Nils Rädecker, Claudia Isabella Pogoreutz, Guilhem Maurice Louis Banc-Prandi

Raw data associated with the publication "Host starvation and in hospite degradation of algal symbionts shape the heat stress response of the Cassiopea-Symbiodiniaceae symbiosis". Temperature profile, daily measurements, physiological measurements, element ...

Zenodo2023

Stable isotope labeling and ultra-high-resolution NanoSIMS imaging reveal alpha-synuclein-induced changes in neuronal metabolism in vivo

Bernard Schneider, Graham Knott, Bohumil Maco, Anders Meibom, Stéphane Laurent Escrig, Sofia Carmen Suzanne Spataro, Louise Helene Soegaard Jensen

In Parkinson's disease, pathogenic factors such as the intraneuronal accumulation of the protein alpha-synuclein affect key metabolic processes. New approaches are required to understand how metabolic dysregulations cause degeneration of vulnerable subtype ...

2023

Correlated cryo-SEM and CryoNanoSIMS imaging of biological tissue

Arnaud Comment, Cristina Martin Olmos, Tian Cheng, Anders Meibom, Stéphane Laurent Escrig, Florent Olivier Vivien Plane, Louise Helene Soegaard Jensen, Nils Rädecker

BackgroundThe development of nanoscale secondary ion mass spectrometry (NanoSIMS) has revolutionized the study of biological tissues by enabling, e.g., the visualization and quantification of metabolic processes at subcellular length scales. However, the a ...

2023

Diffusion timescale conundrum in contact metamorphism: Oxygen isotope and trace element profiles in dolomite

Lukas Baumgartner, Anders Meibom, Stéphane Laurent Escrig, Florence Bégué

Successful application of diffusion chronometry is based on detailed knowledge of diffusion parameters obtained from laboratory experiments, which also need to be upscaled to be applied to natural samples. While generally applicable, several examples of di ...

PERGAMON-ELSEVIER SCIENCE LTD2023

Oxygen diffusion in garnet: Experimental calibration and implications for timescales of metamorphic processes and retention of primary O isotopic signatures

Anders Meibom, Stéphane Laurent Escrig

Knowledge of oxygen diffusion in garnet is crucial for a correct interpretation of oxygen isotope signatures in natural samples. A series of experiments was undertaken to determine the diffusivity of oxygen in garnet, which remains poorly constrained. The ...

MINERALOGICAL SOC AMER2022

Early precipitated micropyrite in microbialites: A time capsule of microbial sulfur cycling

Anders Meibom, Stéphane Laurent Escrig

Microbialites are organosedimentary rocks that have occurred throughout the Earth's history. The relationships between diverse microbial metabolic activities and isotopic signatures in biominerals forming within these microbialites are key to understanding ...

EUROPEAN ASSOC GEOCHEMISTRY2022

Diffusion anisotropy of Ti in zircon and implications for Ti-in-zircon thermometry

Lukas Baumgartner, Anders Meibom, Stéphane Laurent Escrig, Florent Olivier Vivien Plane, Othmar Müntener

2022

Surface Analysis by Secondary Ion Mass Spectrometry (SIMS): Principles and Applications from Swiss Laboratories

Thomas Bovay, Lukas Baumgartner, Anders Meibom, Stéphane Laurent Escrig, Florent Olivier Vivien Plane

Secondary Ion Mass Spectrometry (SIMS) extracts chemical, elemental, or isotopic information about a localized area of a solid target by performing mass spectrometry on secondary ions sputtered from its surface by the impact of a beam of charged particles. ...

SWISS CHEMICAL SOC2022

Fast and pervasive diagenetic isotope exchange in foraminifera tests is species-dependent

Anders Meibom, Stéphane Laurent Escrig, Arthur Adams, Deyanira Graciela Cisneros Lazaro, Jinming Guo

Oxygen isotope compositions of fossil foraminifera tests are commonly used proxies for ocean paleotemperatures, with reconstructions spanning the last 112 million years. However, the isotopic composition of these calcitic tests can be substantially altered ...

Nature Portfolio2022

Coalescence and directed anisotropic growth of starch granule initials in subdomains of Arabidopsis thaliana chloroplasts

Anders Meibom, Stéphane Laurent Escrig, Christophe Kopp

Starch is the major form of energy storage in plant cells and forms discrete, semi-crystalline granules within plastids. Here the authors use electron tomography and nanoSIMS to show that Arabidopsis starch granules initiate in stromal pockets between thyl ...

Nature Portfolio2021

Photosynthesis from stolen chloroplasts can support sea slug reproductive fitness

Anders Meibom, Stéphane Laurent Escrig

Some sea slugs are able to steal functional chloroplasts (kleptoplasts) from their algal food sources, but the role and relevance of photosynthesis to the animal host remain controversial. While some researchers claim that kleptoplasts are slowly digestibl ...

ROYAL SOC2021

Following spatial A beta aggregation dynamics in evolving Alzheimer's disease pathology by imaging stable isotope labeling kinetics

Anders Meibom, Stéphane Laurent Escrig, Melissa Kathleen Passarelli

beta-Amyloid (A beta) plaque formation is the major pathological hallmark of Alzheimer's disease (AD) and constitutes a potentially critical, early inducer driving AD pathogenesis as it precedes other pathological events and cognitive symptoms by decades. ...

AMER ASSOC ADVANCEMENT SCIENCE2021

Correlation of fluorescence microscopy, electron microscopy, and NanoSIMS stable isotope imaging on a single tissue section

Quentin Thomas Jeangros, Arun Aby Paraecattil, Anders Meibom, Stéphane Laurent Escrig, Gaëlle Delphine Toullec, Céline Edith Loussert-Fonta

Correlative light and electron microscopy allows localization of specific molecules at the ultrastructural level in biological tissue but does not provide information about metabolic turnover or the distribution of labile molecules, such as micronutrients. ...

NATURE PUBLISHING GROUP2020