Formerly Erysiphe graminis. Since renamed Blumeria graminis.
Split below species level into 8 distinct ‘formae speceales’.
This species is common globally. It should be assessed and added to the database as a species of least concern.
Population Trend: Improving
Grows readily on both wild and cultivated grasses; a particular problem on important agricultural grasses (wheat, barley, rye etc.).
Blumeria graminis disperses by scattering conidia and ascospores. It is biotrophic, and does not grow on synthetic media. Relatively cool and humid conditions are favourable for its growth. Its relatively great genetic variability enables it often to infect previously resistant plant varieties.
Threats come from human intervention: use of fungicides and fertilisers in order to prevent host infection and development of resistant plant species.
Numerous cultures of this species are regularly maintained in labs across the globe.
Effects of newly integrated technologies for protection of economically important agricultural and horticultural host plants of phytopathogens.
Bebber, Daniel P., Mark AT Ramotowski, and Sarah J. Gurr. “Crop pests and pathogens move polewards in a warming world.” Nature climate change 3.11 (2013): 985-988.
Braun, Uwe. “Taxonomic manual of Erysiphales (powdery mildews).” CBS Biodiversity series 11 (2012).
Ellingham, Oliver, John David, and Alastair Culham. “Powdery Mildew Identification.”