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Scientific article
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Small Subunit Ribosomal DNA Suggests that the Xenophyophorean Syringammina corbicula is a Foraminiferan

Published inThe Journal of eukaryotic microbiology, vol. 50, no. 6, p. 483-487
Publication date2005-07-11
First online date2005-07-11
Abstract

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.

eng
Keywords
  • Deep-sea
  • Foraminifera
  • Phylogeny
  • Ribosomal RNA
  • Protista Xenophyophorea
Citation (ISO format)
PAWLOWSKI, Jan Wojciech et al. Small Subunit Ribosomal DNA Suggests that the Xenophyophorean <i>Syringammina corbicula</i> is a Foraminiferan. In: The Journal of eukaryotic microbiology, 2005, vol. 50, n° 6, p. 483–487. doi: 10.1111/j.1550-7408.2003.tb00275.x
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ISSN of the journal1066-5234
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