Gwenaël Piganeau

The paper models how antiviral resistance mechanisms in phytoplankton affect virus population dynamics, showing that bet-hedging strategies and intracellular resistance strongly reduce viral spread.

This study shows that adaptation to complex environments with multiple stressors leads to lower fitness gains and higher fitness reductions under benign conditions compared to single stressors.

The paper uses epidemiological models to identify molecular mechanisms of antiviral resistance in phytoplankton from experimental data.

The paper identifies hypermutable regions in the nuclear genome of Bigelowiella natans, showing extreme mutation rate variation and a distinctive mutational signature in virus-derived sequences.

This study measures mutation rate and spectrum plasticity in Ostreococcus tauri under different environmental conditions, finding significant variation in SNM rates and spectra.

The paper presents a gapless, telomere-to-telomere genome assembly of Ostreococcus tauri RCC4221 with improved annotation of noncoding RNAs and epigenomic features.

This study develops a theoretical framework linking cellular nutrient economy to genome size evolution in phytoplankton, showing that 1-bp indels can be counterselected under minimal nutrient conditions.

This study integrates metabolomic and transcriptomic analyses to identify molecular mechanisms underlying virus resistance and susceptibility in Ostreococcus mediterraneus.

The paper shows that resistance to a virus in Ostreococcus mediterraneus evolves rapidly through chromoplexy-driven structural variations on a single chromosome, without consistent SNPs or shared structural variants.

The paper assesses genetic and transcriptomic diversity in 17 Phaeodactylum tricornutum accessions, revealing increased genetic diversity and novel clades, while showing no link between sampling year and diversity loss.

The paper studies genomic variability in Bathycoccus prasinos across different oceanic temperatures, finding temperature-associated variant frequency changes and minimal mutational strategies for thermal adaptation.

The paper reports the genome of Seminavis robusta, a benthic diatom, revealing gene family expansions and adaptations related to light and oxygen sensing, and provides insights into genetic diversity and gene function in benthic diatoms.

The paper uses whole genome sequencing of ten Phaeodactylum tricornutum accessions to reveal genetic polymorphism, structure, and functional diversity across geographic and temporal scales.

This study shows that virus-host coexistence in phytoplankton is maintained through bet hedging, where susceptible and resistant phenotypes switch, allowing continuous growth of both microalga and virus.