One Crop Disease, How Many Pathogens? and sp. nov. Identified as the Two Species that Cause Powdery Mildew of Mungbean () and Black Gram () in Australia.

Powdery mildew is a significant threat to mungbean () and black gram () production across Australia and overseas. Although they have been present in Australia for at least six decades and are easily recognized in the field, the precise identification of the pathogens causing this disease has remained unclear. Our goal was to identify the powdery mildew species infecting mungbean, black gram, and wild mungbean ( ssp.

Fungal Planet description sheets: 1042-1111.

Novel species of fungi described in this study include those from various countries as follows: , from marine sediment sand. , (incl. gen.

Australia: A Continent Without Native Powdery Mildews? The First Comprehensive Catalog Indicates Recent Introductions and Multiple Host Range Expansion Events, and Leads to the Re-discovery of as a New Lineage of the Erysiphales.

In contrast to Eurasia and North America, powdery mildews (Ascomycota, Erysiphales) are understudied in Australia. There are over 900 species known globally, with fewer than currently 60 recorded from Australia. Some of the Australian records are doubtful as the identifications were presumptive, being based on host plant-pathogen lists from overseas.

Fungal Planet description sheets: 868-950.

Novel species of fungi described in this study include those from various countries as follows: , and on leaves, , and on leaves, and on leaves, on leaves, on litter of regenerating subtropical rainforest, (incl. gen. nov.