Novel species of the oomycete Olpidiopsis potentially threaten European red algal cultivation

Yacine Badis, Tatyana A. Klochkova, Martina Strittmatter, Andrea Garvetto, Pedro Murúa, J. Craig Sanderson, Gwang Hoon Kim, Claire M. M. Gachon

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)
75 Downloads (Pure)


The rapid growth of marine macroalgal cultivation amplifies the potential impacts of seaweed diseases. Here, we combine microscopy and molecular analysis to describe two novel European species, Olpidiopsis palmariae and O. muelleri spp. nov., that infect the commercially important red algae Palmaria and Porphyra, respectively. A Scottish variety of Olpidiopsis porphyrae, a devastating pathogen of Pyropia previously thought to be restricted to Japanese seaweed farms, is also described as O. porphyrae var. scotiae. In the light of their destructiveness in Asian farms, together with the global expansion of algal cultivation and pertaining seed trade, Olpidiopsis pathogens should be treated as a serious threat to the sustainability of red algal aquaculture. Our findings call for the documentation of seaweed pathogens and the creation of an international biosecurity framework to limit their spread.
Original languageEnglish
Number of pages12
JournalJournal of Applied Phycology
Early online date26 Oct 2018
Publication statusE-pub ahead of print - 26 Oct 2018


  • Aquaculture
  • Algal disease
  • Algal parasite
  • Barcoding
  • Biosecurity
  • Olpidiopsis
  • Oomycete
  • Rhodophyte


Dive into the research topics of 'Novel species of the oomycete Olpidiopsis potentially threaten European red algal cultivation'. Together they form a unique fingerprint.

Cite this