Development of Genomic Resources for the Powdery Mildew, .

Powdery mildews (PMs) are important plant pathogens causing widespread damage. Here, we report the first draft genome of , the causative agent of PM of flowering dogwood, . The assembled genome was 63.5 Mbp and resulted in formation of 19,442 contigs (N50 = 11,686 bp) that contained an estimated 6,860 genes with a genome coverage of 62×. We found 102 candidate secreted effector proteins (CSEPs) in similar to genes that are potentially involved in disease development. This draft genome is an initial step for understanding the evolutionary history of the PMs and will also provide insight into evolutionary strategies that led to the wide host expansion and environmental adaptations so effectively employed by the PM lineages.