Phylogeny of six naviculoid diatoms based on 18S rDNA sequences

B. Beszteri, É Ács, J. Makk, G. Kovács, K. Márialigeti, K. T. Kiss

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

18S rDNA sequences of six Naviculaceae species [Amphora montana, Gomphonema parvulum, Eolimna minima (syn. Navicula minima), Eolimna subminuscula (syn. Navicula subminuscula), Navicula veneta and Phaeodactylum tricornutum] were determined in order to assess the monophyly of this important group of diatoms, to date not included in 18S rDNA databases, and also that of the recently described genus Eolimna. Phylogenetic trees were constructed using other known diatom 18S rDNA sequences, and best tree topologies obtained were tested against alternative trees for their reliability. The analyses do not reject the monophyly of Naviculaceae and strongly support the separation of the genus Eolimna from Navicula sensu lato. The two species of Eolimna, however, do not appear to be each other's closest relatives among the species investigated: rather, E. subminuscula shows affinities to A. montana, and E. minima to P. tricornutum. A. montana, a species which it has been proposed should be transferred into a separate taxon from the other five species, was found to have grouped well within them in all analyses.

Original languageEnglish
Pages (from-to)1581-1586
Number of pages6
JournalInternational journal of systematic and evolutionary microbiology
Volume51
Issue number4
DOIs
Publication statusPublished - Jan 1 2001

Keywords

  • 18S rDNA
  • Bacillariophyceae
  • Naviculaceae
  • Phylogeny

ASJC Scopus subject areas

  • Microbiology
  • Ecology, Evolution, Behavior and Systematics

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