Ligulate Desmarestia (Desmarestiales, Phaeophyceae) revisited: D. japonica sp. nov. and D. dudresnayi differ from D. ligulata

Eun Chan Yang, Akira F. Peters, Hiroshi Kawai, Rowena Stern, Takeaki Hanyuda, Ignacio Barbara, Dieter Gerhard Mueller, Martina Strittmatter, Willem F. Prud'Homme van Reine, Frithjof C. Kuepper*

*Corresponding author for this work

Research output: Contribution to journalArticle

13 Citations (Scopus)
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Abstract

The phylogeny of ligulate and sulfuric-acid containing species of Desmarestia, occurring worldwide from polar to temperate regions, was revised using a multigenic and polyphasic approach. Sequence data, gametophyte characteristics, and sporophyte morphology support reducing a total of 16 taxa to four different species. (1) D.herbacea, containing broad-bladed and highly branched forms, has dioecious gametophytes. The three other species have monoecious gametophytes: (2) D.ligulata which is profusely branched and, except for one subspecies, narrow-bladed, (3) Japanese ligulate Desmarestia, here described as D.japonica sp. nov., which is morphologically similar to D.ligulata but genetically distant from all other ligulate taxa. This species may have conserved the morphology of original ligulate Desmarestia. (4) D.dudresnayi, including unbranched or little branched broad-bladed taxa. A figure of the holotype of D.dudresnayi, which was lost for decades, was relocated. The taxonomy is complemented by a comparison of internal transcribed spacer and cytochrome c oxidase subunit I (cox1) as potential barcode loci, with cox1 offering good resolution, reflecting species delimitations within the genus Desmarestia.

Original languageEnglish
Pages (from-to)149-166
Number of pages18
JournalJournal of Phycology
Volume50
Issue number1
Early online date27 Jan 2014
DOIs
Publication statusPublished - Feb 2014

Keywords

  • brown algae
  • cox1
  • desmarestia
  • DNA barcoding
  • multigene phylogeny
  • phaeophyceae
  • psaA
  • rbcL
  • SSU-ITS
  • sulfuric acid
  • life-history
  • brown-algae
  • temperature tolerance
  • maximum-likelihood
  • sulfuric-acid
  • morphology
  • phylogeny
  • taxonomy
  • seaweeds
  • origin

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