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1 May 2001 The Nucleariid Amoebae: More Protists at the Animal-Fungal Boundary
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Abstract

Nucleariid amoebae are naked amoebae, generally characterized by a spherical or sometimes flattened body with radiating filopodia. Most species preferentially consume algal prey or cyanobacteria. Phylogenetic analyses of the small-subunit rRNA coding regions from four nucleariid amoebae place these species near the origin of the animal-fungal divergence, together with the choanoflagellate-Corallochytrium and the ichthyosporean clades. The species Nuclearia delicatula, N. moebiusi, and N. simplex form a monophyletic group, while ATCC 30864, tentatively but possibly incorrectly assigned to Nuclearia sp., represents a separate line of descent. These nucleariids are unrelated to the lineage containing the testate filose amoebae (Testaceafilosia). Our findings expand the morphological and phylogenetic diversity of protists at the animal-fungal divergence.

LINDA A. AMARAL ZETTLER, THOMAS A. NERAD, CHARLES J. O'KELLY, and MITCHELL L. SOGIN "The Nucleariid Amoebae: More Protists at the Animal-Fungal Boundary," The Journal of Eukaryotic Microbiology 48(3), 293-297, (1 May 2001). https://doi.org/10.1111/j.1550-7408.2001.tb00317.x
Received: 15 May 2000; Accepted: 9 January 2001; Published: 1 May 2001
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