Genetic diversity of a plant species is not decreased by it maternally transmitted symbiont

  The maternally transmitted endophytic fungus Epichloe festucae did not decrease the genetic diversity of it host, the alpine grass Festuca eskia. Several authors suggested that to maintain grass-fungal co-evolutionary compatibility, selection may  favor fungal genotypes exhibiting mechanisms that decrease genetic diversity

New paper| Interplay between Endophyte Prevalence, Effects and Transmission: Insights from a Natural Grass Population , Plos One 2015

New paper| Interplay between Endophyte Prevalence, Effects and Transmission: Insights from a Natural Grass Population , Plos One 2015

The positive effect of the maternally transmitted fungal endophyte Epichloe festucae on his host grass Festuca eskia is not systematically associated with high transmission rates of the symbiont over short time scales, in particular following an environmental change. We used a demographic population