Hypervirulence in the Rat Model Parallels Human Infection and Is Modulated by the Locus.

Toxoplasmosis is considered as an opportunistic parasitic disease. If post-natally acquired in children or adults, it may pass unnoticed, at least with strains of European origin. However, in the wild biotopes especially in South America, strains display a greater genetic diversity, which correlates to higher virulence for humans, particularly along the Amazon River and its tributaries.

Gene flow in Argentinian sunflowers as revealed by genotyping-by-sequencing data.

Gene flow can have several different applied consequences, ranging from extinction to the escape of transgenes to the evolution of weedy or invasive lineages. Here, we describe patterns of hybridization and gene flow involving domesticated and wild sunflowers in Argentina. To address the risks of introgression of variants from the cultivated sunflower into invasive wild , we used genotyping-by-sequencing (GBS) to genotype 182 samples from 11 sites in Argentina, along with previously published data from samples from the native range (North America), to determine the native source populations of the Argentinian samples and to detect admixture.