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KMID : 0613820090190030311
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Journal of Life Science
2009 Volume.19 No. 3 p.311 ~ p.316
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Phylogeny Study of Genus Pelvetia in Korea by Internal Transcribed Spacer Sequence (ITS)
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Lee Bok-Kyu
Huh Man-Kyu
Choi Joo-Soo
Cho Sung-Hyun
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Abstract
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The brown algae, or phaeophytes, are a large group of multicellular algae, including many notable types of seaweed. We analysed intra- and interspecific phylogenic studies within the genus Pelvetia in Korea and compared them with results of both same and different species in GenBank. The sequences for P. babingtonii in Korea were generally similar to those for P. babingtonii AF102957, and the sequences of P. siliquosa in Korea were also similar to those of P. siliquosa AF102958. Sequence variation within the Pelvetia is mostly due to nucleotide substitutions, although several small indels and some large indels can be found. Another source of sequence divergence is length variation due to stretches of short repeats that occur at the ITS1 or ITS2 in all the Pelvetia. NJ analysis consists mainly of two clades. One of them contains P. canaliculata and P. limitata, and is sister to the rest of the genus (P. siliquosa, P. compressa, and P. babingtonii). P. babingtonii is not grouped one clade. In the MP analysis, ten accessions or populations were fully resolved and all accessions from the same species formed with 99% or 100% bootstrap supports.
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KEYWORD
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ITS, phylogenic analyses, Pelvetia babingtonii, P. siliquosa
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