New Finding of Golovinomyces salviae Powdery Mildew on Glechoma longituba (Lamiaceae), Besides Its Original Host Salvia spp.

Abstract

The Golovinomyces biocellatus complex is known to consist of powdery mildew from the Golovinomyces genus, associated with host plants from the Lamiaceae family. Recent molecular phylogenetic analyses have resolved the taxonomic composition of this complex, and Golovinomyces biocellatus sensu stricto is considered to be a pathogen of Glechoma species, globally. However, this paper presents a new finding of Golovinomyces salviae on Glechoma longituba, besides its original host species of Salvia. This information was inferred by molecular phylogenetic analyses from the multi-locus nucleotide sequence dataset of intergeneric spacer (IGS), internal transcribed spacer (ITS), large subunit (LSU) of rDNA, and glyceraldehyde-3-phosphate dehydrogenase (GAPDH) gene. Further, the asexual morphology of this fungus is described and illustrated.

Keywords

• erysiphaceae
• golovinomyces biocellatus
• gapdh (glyceraldehyde-3-phosphate dehydrogenase)
• its (internal transcribed spacer)
• lsu (large subunit)
• multigene analysis