Phylogenetic position of Attheya longicornis and Attheya septentrionalis (Bacillariophyta)

Sebastiaan W. Rampen; Stefan Schouten; F. Elda Panoto; Maaike Brink; Robert A. Andersen; Gerard Muyzer; Ben Abbas; Jaap S.  Sinninghe Damsté

doi:10.1111/j.1529-8817.2009.00657.x

Phylogenetic position of Attheya longicornis and Attheya septentrionalis (Bacillariophyta)

Sebastiaan W. Rampen, Stefan Schouten, F. Elda Panoto, Maaike Brink, Robert A. Andersen, Gerard Muyzer, Ben Abbas, Jaap S. Sinninghe Damsté

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Abstract

The phylogenetic position of diatoms belonging to the genus Attheya is presently under debate. Species belonging to this genus have been placed in the subclasses Chaetocerotophycidae and Biddulphiophycidae, but published phylogenetic trees based on 18S rDNA, morphology, and sexual reproduction indicate that this group of diatoms may be a sister group of the pennates. To clarify the position of Attheya, we studied the morphology, 18S rDNA, 16S rDNA of the chloroplasts, the rbcL large subunit (LSU) sequences of the chloroplasts, and the sterol composition of three different strains of Attheya septentrionalis (Ostrup) R. M. Crawford and one strain of Attheya longicornis R. M. Crawford et C. Gardner. These data were compared with data from more than 100 other diatom species, covering the whole phylogenetic tree, with special emphasis on species belonging to the genera that have been suggested to be related to the genus Attheya. All data suggest that the investigated Attheya species form a separate group of diatoms, and there is no indication that they belong to either the Chaetocerotophycidae or the Biddulphiophycidae. Despite applying these various approaches, we were unable to determine the exact phylogenetic position of the investigated Attheya species within the diatoms.

Original language	English
Pages (from-to)	444-453
Number of pages	10
Journal	Journal of Phycology
Volume	45
Issue number	2
DOIs	https://doi.org/10.1111/j.1529-8817.2009.00657.x
Publication status	Published - Apr 2009

Funding

This work was supported by the Dutch Technology Foundation (STW) grant BAR-5275, by Grant 853.00.020 from the ALW coupled Biosphere-Geosphere programme of the Netherlands Organisation for Scientific Research (NWO), and by U.S. National Science Foundation grants 0444418 and 0629564. We thank Dr. Wetherbee and two anonymous reviewers for their comments, which significantly improved the quality of this paper.

Funders	Funder number
Dutch Technology Foundation	BAR-5275, 853.00.020
Nederlandse Organisatie voor Wetenschappelijke Onderzoek (NWO)
U.S. National Science Foundation	0444418, 0629564
Division Of Environmental Biology; Direct For Biological Sciences	0629564, 0949211
Div Of Biological Infrastructure; Direct For Biological Sciences	0444418

Keywords

16S rDNA
18S rDNA
Attheya
Bacillariophyta
Biddulphiophycidae
Chaetocerotophycidae
Morphology
rbcL
Sterols

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10.1111/j.1529-8817.2009.00657.x

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title = "Phylogenetic position of Attheya longicornis and Attheya septentrionalis (Bacillariophyta)",

abstract = "The phylogenetic position of diatoms belonging to the genus Attheya is presently under debate. Species belonging to this genus have been placed in the subclasses Chaetocerotophycidae and Biddulphiophycidae, but published phylogenetic trees based on 18S rDNA, morphology, and sexual reproduction indicate that this group of diatoms may be a sister group of the pennates. To clarify the position of Attheya, we studied the morphology, 18S rDNA, 16S rDNA of the chloroplasts, the rbcL large subunit (LSU) sequences of the chloroplasts, and the sterol composition of three different strains of Attheya septentrionalis (Ostrup) R. M. Crawford and one strain of Attheya longicornis R. M. Crawford et C. Gardner. These data were compared with data from more than 100 other diatom species, covering the whole phylogenetic tree, with special emphasis on species belonging to the genera that have been suggested to be related to the genus Attheya. All data suggest that the investigated Attheya species form a separate group of diatoms, and there is no indication that they belong to either the Chaetocerotophycidae or the Biddulphiophycidae. Despite applying these various approaches, we were unable to determine the exact phylogenetic position of the investigated Attheya species within the diatoms.",

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author = "Rampen, {Sebastiaan W.} and Stefan Schouten and Panoto, {F. Elda} and Maaike Brink and Andersen, {Robert A.} and Gerard Muyzer and Ben Abbas and {Sinninghe Damst{\'e}}, {Jaap S.}",

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Phylogenetic position of Attheya longicornis and Attheya septentrionalis (Bacillariophyta)

Abstract

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Keywords

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