期刊
JOURNAL OF EUKARYOTIC MICROBIOLOGY
卷 48, 期 3, 页码 293-297出版社
WILEY
DOI: 10.1111/j.1550-7408.2001.tb00317.x
关键词
Aconchulinia; Cristidiscoidida; filopodia; Filosea; mitochondrial cristae; Nuclearia; Nucleariidae; phylogeny; SSU rRNA; Vampyrellidium
类别
资金
- NIGMS NIH HHS [GM32964] Funding Source: Medline
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.
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