Hyaloraphidium curvatum is not a green alga but a lower fungus; Amoebidium parasiticum is not a fungus, but a member of the DRIPs

Ustinova I, Krienitz L, Huß V (2000)

Publication Language: English

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2000

Journal

Protist Elsevier

Publisher: Elsevier GmbH

Book Volume: 151

Pages Range: 253-262

Journal Issue: 3

DOI: 10.1078/1434-4610-00023

Abstract

The unicellular heterotrophic protist Hyaloraphidium is classified with a family of green algae, the Ankistrodesmaceae. The only species that exists in pure culture and that is available for taxonomic studies is H. curvature. Comparative18S ribosomal RNA sequence analyses showed that H. curvature belongs to the fungi rather than to the algae. Within the fungi, H. curvatrum preferentially clustered with Chytridiomycetes. Unlike Chytridiomycetes, H. curvature propagates by autosporulation, and the presence of flagella has never been reported. Transmission electron microscopy indicated that H. curvature in some respects resembles Chytridiomycetes, but no elements of a flagetlar apparatus were detected. The habitus of H. curvature is unlike that of other fungi except the trichomycete Amoebidium parasiticum. The cell wall sugar composition of H. curvature was unique, but to some extent resembled that of A. parasiticum. However, H. curvature and A. parasiticum are not closely related to each other according to 18S rRNA sequence data. Moreover, A. parasiticum clustered with protistan animals, the Mesomycetozoa (DRIPs). Combined molecular, ultrastructural and chemical data do not allow assignment of H. curvature to any recognized clade of fungi. This suggests that H. curvature may represent an independent evolutionary lineage within the fungi.

Authors with CRIS profile

Volker Huß Lehrstuhl für Molekulare Pflanzenphysiologie

Involved external institutions

Leibniz-Institut für Gewässerökologie und Binnenfischerei (IGB) im Forschungsverbund Berlin e.V. / Leibniz Institute of Freshwater Ecology and Inland Fisheries DE Germany (DE)

How to cite

APA:

Ustinova, I., Krienitz, L., & Huß, V. (2000). Hyaloraphidium curvatum is not a green alga but a lower fungus; Amoebidium parasiticum is not a fungus, but a member of the DRIPs. Protist, 151(3), 253-262. https://doi.org/10.1078/1434-4610-00023

MLA:

Ustinova, Iana, Lothar Krienitz, and Volker Huß. "Hyaloraphidium curvatum is not a green alga but a lower fungus; Amoebidium parasiticum is not a fungus, but a member of the DRIPs." Protist 151.3 (2000): 253-262.

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