Monday 13th October

13h30 – 13h45 — Opening of EcotoxicoMic YR 2025 webinar (Marine Suchet & Nicolas Gallois)

13h45 – 14h30 Keynote speaker: Prof. Dr. Tamara Tal

Exploring chemical-microbiome interactions in zebrafish

14h30 – 15h15 — Microbiome host interactions – Part 1
Chair: Lauris Evariste

• Marine Suchet – Impacts of chronic exposure to sodium fluoride or tebuconazole on the branchial, intestinal and epidermal microbiota of juvenile rainbow trout (Oncorhynchus mykiss)
• Chloe Wray – Chemical–Microbiome Interactions in Larval Zebrafish: Microbiome-Dependent Effects of Azoxystrobin on Neurobehavior
• Maëlann Roger – Exposure to pesticides in Magallana gigas larvae: impact to its microbiota and its susceptibility to OsHV-1 at the spat stage

15h15 – 16h15 — Poster & flash presentations

16h15 – 17h00 — Microbiome host interactions – Part 2
Chair: Marine Suchet

• Thomas Moura – Comparative ecotoxicological effects of a copper-based nanopesticide and its conventional equivalent on Xenopus laevis tadpole and its gut microbiota
• Florian Chapeau – Effects of graphene oxide on Xenopus laevis after multi-route exposure: an integrated host-microbiota approach
• Jesse Ouwehand – Microbial custody: key microbiome inhabitant Sphingomonas alleviates silver nanoparticle toxicity in Daphnia magna

Monday 20th October

13h30 – 13h35 — Introduction of the day (Maria Osipenko)

13h35 – 14h20 Keynote speaker: Dr. Clémence Thiour Mauprivez

Effects of microplastics on bacterial communities in agricultural soils

14h20 – 15h05 — Effects of contaminants on microorganisms: from species to communities – Part 1
Chair: Maria Osipenko

• Camille Touchet – Microplastics and freshwater disease ecology: impacts on microbiota, life-history traits, and transmission potential of the snail Galba truncatula
• Koffi Anderson Hongo – Assessment of microbial diversity in lake Kassembié for microplastic degradation using 16S rRNA (V3–V4) region sequencing
• Marie Winter – Laboratory to field scale: the ecological relevance of laboratory tests for environmental reliable ecotoxicity assessment of polymers

15h05 – 16h05 — Poster & flash presentations

16h05 – 16h50 — Effects of contaminants on microorganisms: from species to communities – Part 2
Chair: Roxane Dhommée

• Olivia F. Sieniawski – Surfactants in herbicide formulations influence nitrogen cycling in soil microcosms
• Maria Osipenko – Effect of plant-based products on soil microbial communities in Christmas tree plantations
• Neus Besolí-Mestres – Does urban runoff impact urban stream communities?

Monday 27th October

13h30 – 13h35 — Introduction of the day (Titouan Dionet)

13h35 – 14h20 Keynote speaker: Dr. Christopher Sweeney

Better, not just newer: A case study of soil microbial pesticide risk assessment

14h20 – 15h20 — New methods and approaches in microbial ecotoxicology
Chair: Nicolas Gallois

• Tifenn Primet – Toxic Foresight: Predicting Harmful Cyanobacterial Blooms
• Isiaka A. Adelere – Application of Bacillus safensis lau 13 metabolite for the control of growth and aflatoxin production by Aspergillus species on stored maize grains
• Camille Saint-Picq – Revealing marine plastic degraders using stable isotope tracers
• Titouan Dionet – Spore-tacular automation: deep learning analysis for aquatic hyphomycete ecotoxicological assessment

15h20 – 16h20 — Poster & flash presentations

16h20 – 16h50 — Microbial bioprocesses and bioremediation
Chair: Ioanna Gkoni

• Göksu Celik – Biodegradability of tire additives: the role of freshwater and wastewater microbiomes
• Olivia Renard – S-metolachlor degradation in agricultural soils and groundwater: isolation of native degrading strains and microbial community profiling

Monday 3rd November

13h20 – 13h25 — Introduction of the day (Sofia Agosti)

13h25 – 14h10 Keynote speaker: Dr. Edward Topp

Impacts of humans on the environmental resistome and mobilome

14h10 – 14h55 — Antimicrobial resistance
Chair: Sofia Agosti

• Ioanna Gkoni – Influence of antibiotics and microbial coalescence on sediment microbial communities' functions and diversity
• Anita Solem – Dissemination of antimicrobial resistance and potential pathogens through urban wastewater treatment plants
• Eleni Rafaila Lamprou – Plastisphere as a Hotspot for Antibiotic Resistance Gene Enrichment in Fertilized Agricultural Soils

14h55 – 15h45 — Poster & flash presentations

15h45 – 16h30 — Effects of contaminants on microorganisms: from species to communities – Part 3
Chair: Camille Touchet

• Charly Dupont – Novel insight into rare earth element mediated stress resistance in Pseudomonas putida KT2440 using adaptative laboratory experiment
• Zahrasadat Alavikakhiki – Acute toxicity evaluation of 12 pharmaceuticals on microbial functions of periphyton
• Andrea Marchetto – Responses of Gut Microbial Species and Complex Communities to Xenobiotic Exposure Reveal Mechanisms of Resilience and Vulnerability in vitro

16h30 – 16h40 — Presentation of EcotoxicoMic 2026 (Dimitrios Karpouzas)

16h40 – 16h55 — Awards & Closure of the third international webinar of young microbial ecotoxicology researchers

Poster & Flash presentations

Available during the entire webinar (all four afternoons)

• Louis Le Douarin – Development of a multi-omic approach to assess the impact of the harbour eco-exposome on juvenile fish
• Catherine Chamorro – Effects and intracellular fate of cobalt (Co) in the freshwater microalga Chlamydomonas reinhardtii
• Emeline Delcros – Elucidation of intracellular speciation and the effects of indium on the microalga Chlamydomonas reinhardtii
• Stella Köhler – Pesticide mixture effects on bioaccumulation and toxicity in biofilms
• Daphnée Caux – Prior stress exposure influences microbial community assembly and litter decomposition in headwater streams
• François Sepet – River or dendrotelmata: Does habitat of origin shape the tolerance of aquatic hyphomycetes to lead and copper?
• Zoé Arrigoni – Road Dust contaminants and periphytic microalgae: community shifts and trophic transfer to Daphnia magna
• Fadwa Khalfallah – Urban land use shapes microbial life strategies along a management intensity gradient
• Jessie-Lee Langel – New Biomarkers for Sea Turtle Conservation: Insights from Shell Biofilms and Eggshell Trace Metals
• Zeina Bourhane – Novel Bioactive Molecules in Thermal Waters: A New Frontier in Cosmetic Innovation
• Ryhane Lounas – Isolation and characterization of indigenous hydrocarbon-degrading bacteria from oil-contaminated Algerian soils using Nanopore technology
• Ana Luisa Mejia Camacho – Fitness Costs Limit MDR E. coli Invasion but Not Gene Dissemination in Freshwater Sediment