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Citation for Study 19961

Citation title: "Molecular and morphological characterization of the Achnanthidium minutissimum complex (Bacillariophyta) in Petuniabukta (Spitsbergen, High Arctic) including the description of A. digitatum sp. nov.".

Study name: "Molecular and morphological characterization of the Achnanthidium minutissimum complex (Bacillariophyta) in Petuniabukta (Spitsbergen, High Arctic) including the description of A. digitatum sp. nov.".

This study is part of submission 19961 (Status: Published).

Citation

Pinseel E., Vanormelingen P., Hamilton P.B., Vyverman W., Van de vijver B., & Kopalov? K. 2017. Molecular and morphological characterization of the Achnanthidium minutissimum complex (Bacillariophyta) in Petuniabukta (Spitsbergen, High Arctic) including the description of A. digitatum sp. nov. European Journal of Phycology, .

Authors

• Pinseel E. (submitter)
• Vanormelingen P.
• Hamilton P.B.
• Vyverman W.
• Van de vijver B.
• Kopalov? K.

Abstract

Recent morphology-based investigations of freshwater Arctic diatoms suggest that many species remain to be discovered, reflecting a unique polar flora. During a survey of the freshwater diatom flora of Petuniabukta (Spitsbergen), several morphodemes belonging to the Achnanthidium minutissimum species complex were recorded. Molecular phylogenies based on rbcL, 28S and 18S sequences, including single cells from Canada and strains from Marion Island (sub-Antarctica) and GenBank revealed the presence of twelve distinct A. minutissimum complex lineages, of which three contained strains from Petuniabukta. One Arctic lineage is described as a new species. Achnanthidium digitatum sp. nov. is morphologically characterized by narrow, linear to only slightly lanceolate valves and usually two areolae per stria. The two remaining Arctic lineages are in need of a more complete morphological and molecular comparison with other representatives of the A. minutissimum complex to clarify their taxonomic identity. It is argued that implementation of molecular data in the taxonomy of Achnanthidium will be essential to solve the taxonomic problems associated with this group, eventually resulting in a better understanding of the biogeography and niche differentiation of different species belonging to the A. minutissimum complex. Ideally, this should be based on more variable genes than the currently widely 18S, which does not seem to have a species level resolution in the A. minutissimum complex.

Keywords

Achnanthidium, Arctic Region, 28S, molecular phylogeny, new species, rbcL, Spitsbergen, taxonomy, 18S, valve morphology

External links

• DOI: 10.1080/09670262.2017.1283540

About this resource

• Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S19961
• Other versions: Nexus NeXML
• Show BibTeX reference

  		@ARTICLE{TreeBASE2Ref26391,
  	 author = {Eveline  Pinseel and Pieter  Vanormelingen and Paul B. Hamilton and Wim  Vyverman and Bart  Van de Vijver and Kateřina  Kopalov?},
  	 title = {Molecular and morphological characterization of the Achnanthidium minutissimum complex (Bacillariophyta) in Petuniabukta (Spitsbergen, High Arctic) including the description of A. digitatum sp. nov.},
  	 year = {2017},
  	 keywords = {Achnanthidium, Arctic Region, 28S, molecular phylogeny, new species, rbcL, Spitsbergen, taxonomy, 18S, valve morphology},
  	 doi = {10.1080/09670262.2017.1283540},
  	 url = {http://},
  	 pmid = {},
  	 journal = {European Journal of Phycology},
  	 volume = {},
  	 number = {},
  	 pages = {},
  	 abstract = {Recent morphology-based investigations of freshwater Arctic diatoms suggest that many species remain to be discovered, reflecting a unique polar flora. During a survey of the freshwater diatom flora of Petuniabukta (Spitsbergen), several morphodemes belonging to the Achnanthidium minutissimum species complex were recorded. Molecular phylogenies based on rbcL, 28S and 18S sequences, including single cells from Canada and strains from Marion Island (sub-Antarctica) and GenBank revealed the presence of twelve distinct A. minutissimum complex lineages, of which three contained strains from Petuniabukta. One Arctic lineage is described as a new species. Achnanthidium digitatum sp. nov. is morphologically characterized by narrow, linear to only slightly lanceolate valves and usually two areolae per stria. The two remaining Arctic lineages are in need of a more complete morphological and molecular comparison with other representatives of the A. minutissimum complex to clarify their taxonomic identity. It is argued that implementation of molecular data in the taxonomy of Achnanthidium will be essential to solve the taxonomic problems associated with this group, eventually resulting in a better understanding of the biogeography and niche differentiation of different species belonging to the A. minutissimum complex. Ideally, this should be based on more variable genes than the currently widely 18S, which does not seem to have a species level resolution in the A. minutissimum complex. }
  }
  		

• Show RIS reference

  		TY  - JOUR
  ID  - 26391
  AU  - Pinseel,Eveline 
  AU  - Vanormelingen,Pieter 
  AU  - Hamilton,Paul B.
  AU  - Vyverman,Wim 
  AU  - Van de Vijver,Bart 
  AU  - Kopalov?,Kateřina 
  T1  - Molecular and morphological characterization of the Achnanthidium minutissimum complex (Bacillariophyta) in Petuniabukta (Spitsbergen, High Arctic) including the description of A. digitatum sp. nov.
  PY  - 2017
  KW  - Achnanthidium
  KW  - Arctic Region
  KW  - 28S
  KW  - molecular phylogeny
  KW  - new species
  KW  - rbcL
  KW  - Spitsbergen
  KW  - taxonomy
  KW  - 18S
  KW  - valve morphology
  UR  - http://dx.doi.org/10.1080/09670262.2017.1283540
  N2  - Recent morphology-based investigations of freshwater Arctic diatoms suggest that many species remain to be discovered, reflecting a unique polar flora. During a survey of the freshwater diatom flora of Petuniabukta (Spitsbergen), several morphodemes belonging to the Achnanthidium minutissimum species complex were recorded. Molecular phylogenies based on rbcL, 28S and 18S sequences, including single cells from Canada and strains from Marion Island (sub-Antarctica) and GenBank revealed the presence of twelve distinct A. minutissimum complex lineages, of which three contained strains from Petuniabukta. One Arctic lineage is described as a new species. Achnanthidium digitatum sp. nov. is morphologically characterized by narrow, linear to only slightly lanceolate valves and usually two areolae per stria. The two remaining Arctic lineages are in need of a more complete morphological and molecular comparison with other representatives of the A. minutissimum complex to clarify their taxonomic identity. It is argued that implementation of molecular data in the taxonomy of Achnanthidium will be essential to solve the taxonomic problems associated with this group, eventually resulting in a better understanding of the biogeography and niche differentiation of different species belonging to the A. minutissimum complex. Ideally, this should be based on more variable genes than the currently widely 18S, which does not seem to have a species level resolution in the A. minutissimum complex. 
  L3  - 10.1080/09670262.2017.1283540
  JF  - European Journal of Phycology
  VL  - 
  IS  - 
  ER  -