Bremia polycephala and bremia sawadae spp. Nov. (peronosporaceae; oomycota), parasitic to northeast Asian asteraceae

Ji Hoon Park, Marco Thines, Hyang Burm Lee, Hyeon-Dong Shin, Young Joon Choi

Research output: Contribution to journalArticle

1 Citation (Scopus)


All confirmed members of the genus Bremia (Peronosporales; Oomycetes) parasitise diverse plants of the family Asteraceae. For more than one hundred years, Bremia was considered a monotypic genus, with a well-known species, B. lactucae. However, studies since the turn of the century have revealed that Bremia contains many specialised species. During an investigation of the diversity of Bremia species, we found two so far undescribed species of Bremia in Korea, each of which is parasitic to Crepidiastrum denticulatum and Ixeris polycephala, both native to Northeast Asia. Through multigene phylogenies (based on ITS, LSU D1-3 rDNA, cox1, cox2, cox2-1 spacer mtDNA, and BrRxLR11) and the morphological characteristics, we introduce them as new species, Bremia polycephala (ex Ixeris polycephala) and Bremia sawadae (ex Crepidiastrum denticulatum).

Original languageEnglish
Pages (from-to)303-314
Number of pages12
JournalNova Hedwigia
Issue number3-4
Publication statusPublished - 2018 Jan 1



  • Barcoding
  • Crepidiastrum
  • Downy mildew
  • Ixeris
  • Youngia

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Plant Science

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