Phylogenetic relationships ofPelvetia andPelvetiopsis (Phaeophyceae) based on small subunit ribosomal DNA sequences |
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Authors: | Wook Jae Lee Hwan Su Yoon Sung Min Boo |
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Affiliation: | (1) Department of Biology, Chungnam National University, 305-764 Daejon, Korea |
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Abstract: | Nucleotide sequences of the small-subunit (SSU) ribosomal DNA were determined forPelvetia babingtonii, P. canaliculate, Pelvetiopsis limitata, andAscophyllum nodosum in the family Fucaceae. A total of 1755 positions were aligned for the whole sequence. The positional differences in the primary structure among the taxa ranged from 16 to 30 nucleotide changes in pairwise comparisons. There was a minimum divergence betweenPs. limitata andP. babingtonii while a maximum betweenPs. limitata andP. canaliculata. The SSU rDNA trees showed that the genusPelvetia was not monophyletic and the genusPelvetiopsis was not closely related toPelvetia. Our results suggest that the taxonomic revision of the genusPelvetia as well as the family Fucaceae is needed based on detailed morphological observations. |
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Keywords: | Pelvetia Pelvetiopsis Phaeophyceae phylogeny SSU rDNA |
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