ERP138163 PRJEB53370 20220602_DYNECO_MLG RNA sequencing of 19 strains of Alexandrium minutum, 2021 RNA sequencing of 19 monoclonal strains of Alexandrium minutum for SNP calling and population genomic analysis Alex_strains_2021 RNA sequencing of 19 monoclonal strains of Alexandrium minutum for SNP calling and population genomic analysis INSTITUTE_NAME IFREMER_ODE_DYNECO_PELAGOS CENTER_PROJECT_NAME Alex_strains_2021 STUDY_TYPE RNASeq STUDY_ABSTRACT Dinoflagellates of the genus Alexandrium are responsible for harmful algal blooms and produce paralytic shellfish toxins (PSTs). Marine microeukaryote population structures are difficult to study, and contrary to theoretical expectations of high genetic diversity and low genetic structure, they often display moderate diversity and strong genetic structure. These organisms display huge census population sizes, yet genotyping usually requires clonal strains originating from single cells, hindering proper population sampling. Estimating allelic frequency directly from population wide samples, without any isolation step, offers an interesting alternative. The goal of the study was to compare population genetic structure inferred from strains and from meta-transcriptomic samples in Western Europe. FUNDING_ACKNOWLEDGMENT The study was funded by PRIMROSE (EC Interreg Atlantic Area EAPA182/2016) and the Brittany Region as part of the project PALMIRA AUTHOR Mickael LE GAC COLLABORATOR Julien QUERE COLLABORATOR Francisco RODRIGUEZ ENA-FIRST-PUBLIC 2022-08-02 ENA-LAST-UPDATE 2022-08-02