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Algae > Volume 24(2); 2009 > Article
Algae 2009;24(2): 79-83. doi: https://doi.org/10.4490/algae.2009.24.2.079
First Record of Cladosiphon umezakii (Ectocarpales, Phaeophyceae) in Korea
Ga Youn Cho1* and Sung Min Boo2

1Division of Non-vascular Plants, National Institute of Biological Resources, Incheon 404-708, Korea
2Department of Biology, Chungnam National University, Daejeon 305-764, Korea
*Corresponding Author  Email: gycho@nibr.go.kr
Recently described new species, Cladosiphon umezakii Ajisaka (Ectocarpales, Phaeophyceae) is reported in Korea based on morphology and plastid rbcL sequences. Cladosiphon umezakii occurred on low intertidal to subtidal zone along the south and southeast coasts in Korea. Thalli are gold to dark brown, erect, cylindrical, irregularly branched, and very mucoid. Unilocular zoidangium is developed at the base of assimilatory filaments. Assimilatory filaments are very long. Eight specimens of the species collected from Korea clustered with those of C. umezakii in Japan in rbcL tree. The species showed a sister relationship with C. okamuranus. The occurrence of this warm water species is thought an example of northward migration of marine algae caused by global warming. Because C. umezakii is of the economical importance of the genus as foods and medicines, the study on mass culture of the species is necessary in Korea.
Key words: Chordariaceae, Cladosiphon, C. umezakii, morphology, rbcL

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