Novel species of the oomycete Olpidiopsis potentially threaten European red algal cultivation - Sorbonne Université Access content directly
Journal Articles Journal of Applied Phycology Year : 2019

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

Abstract

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.
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hal-03850418 , version 1 (13-11-2022)

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Yacine Badis, Tatyana Klochkova, Martina Strittmatter, Andrea Garvetto, Pedro Murúa, et al.. Novel species of the oomycete Olpidiopsis potentially threaten European red algal cultivation. Journal of Applied Phycology, 2019, 31 (2), pp.1239-1250. ⟨10.1007/s10811-018-1641-9⟩. ⟨hal-03850418⟩
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