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Olpidiopsis antithamnionis n. sp. (Oomycetes, Olpidiopsidaceae), a parasite of Antithamnion floccosum (O. F. Müll.) Kleen from Newfoundland

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Summary

Olpidiopsis antithamnionis n. sp. (Oomycetes, Olpidiopsidaceae) parasitic on Antithamnion floccosum (O. F. Müll.) Kleen (Rhodophyta, Ceramiaceae) is described from three sites in Newfoundland, Canada, and from culture.

Axial cells of the main and determinate branches of the host are the primary sites of fungal attack, although tetrasporangia and rhizoidal cells are also susceptible. Successful re-infection of A. floccosum was achieved in the laboratory although A. boreale and the trailliella-phase of Bonnemaisonia hamifera, both occurring with A. floccosum in the field, were immune. Regeneration of the host cells was observed, a phenomenon not previously reported in the fungal parasitism of other filamentous benthic marine algae.

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Studies in Biology from Memorial University of Newfoundland No. 256.

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Whittick, A., South, G.R. Olpidiopsis antithamnionis n. sp. (Oomycetes, Olpidiopsidaceae), a parasite of Antithamnion floccosum (O. F. Müll.) Kleen from Newfoundland. Archiv. Mikrobiol. 82, 353–360 (1972). https://doi.org/10.1007/BF00424938

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  • DOI: https://doi.org/10.1007/BF00424938

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