Phylogeny of six naviculoid diatoms based on 18S rDNA sequences

Beszteri, B. and Ács, Éva and Makk, Judit and Kovács, G. and Márialigeti, Károly and Kiss, Keve Tihamér (2001) Phylogeny of six naviculoid diatoms based on 18S rDNA sequences. International Journal of Systematic and Evolutionary Microbiology, 51 (4). pp. 1581-1586. ISSN 1466-5026


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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 late. 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.

Item Type: Article
Uncontrolled Keywords: Bacillariophyceae; Naviculaceae; 18S rDNA; phylogeny
Subjects: Q Science / természettudomány > QE Geology / földtudományok > QE08 Hydrosphere. Hydrology / hidroszféra, hidrológia
Q Science / természettudomány > QH Natural history / természetrajz > QH301 Biology / biológia
Depositing User: Erika Bilicsi
Date Deposited: 20 Feb 2013 09:49
Last Modified: 20 Feb 2013 09:51

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