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Small subunit ribosomal DNA suggests that the xenophyophorean Syringammina corbicula is a foraminiferan.
Journal article

Small subunit ribosomal DNA suggests that the xenophyophorean Syringammina corbicula is a foraminiferan.

  • 2004-01-22
Published in:
  • The Journal of eukaryotic microbiology. - 2003
Animals
Base Sequence
Cloning, Molecular
DNA Primers
DNA, Protozoan
DNA, Ribosomal
Eukaryota
Gene Amplification
Molecular Sequence Data
Phylogeny
English Xenophyophorea are giant deep-sea rhizopodial protists of enigmatic origins. Although species were described as Foraminifera or sponges in the early literature, the xenophyophoreans are currently classified either as a class of Rhizopoda or an independent phylum. To establish the phylogenetic position of Xenophyophorea, we analysed the small subunit (SSU) rRNA gene sequence of Syringammina corbicula Richardson, a newly described xenophyophorean species from the Cape Verde Plateau. The SSUrDNA analyses showed that S. corbicula is closely related to Rhizammina algaeformis, a tubular deep-sea foraminiferan. Both species branch within a group of monothalamous (single-chambered) Foraminifera, which include also such agglutinated genera as Toxisarcon, Rhabdammina, and Saccammina, and the organic-walled genera Gloiogullmia and Cylindrogullmia. Our results are congruent with observations of similar cytoplasmic organisation in Rhizammina and Syringammina. Thus, the Xenophyophorea appear to be a highly specialised group of deep-sea Foraminifera.
Language
  • English
Open access status
closed
Identifiers
Persistent URL
https://sonar.ch/global/documents/195678
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