RNA sequencing of 19 strains of Alexandrium minutum, 2021

This dataset contains RNAseq reads from 19 Alexandrium minutum strains cultivated in K medium 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.