Division of the Natural/Applied Sciences, Graduate School of Humanities and Sciences, Ochanomizu University
Faculty of Science, Ochanomizu University
Usa Marine Biological Institute, Kochi University
Department of Natural History Sciences, Graduate School of Science, Hokkaido University
School of Biological Sciences, Queen's University of Belfast
Xiangshan Xuwen development of seaweed co., ltd
抄録
In June 2008, news agencies worldwide reported a 'green tide'phenomenon that was threatening the upcoming Olympic sailing events in Qingdao, China. This was caused by the green macroalgal genus Ulva. Previous work showed that the species involved in this phenomenon belongs to a complex of tubular species called the LPP complex clade (i.e. including the species U. linza Linnaeus, U. prolifera O.F. Müller and U. procera (K. Ahlner) Hayden et al.). To understand the relationship between the bloom formed in open water and the attached populations of Ulva found on the shorelines surrounding Qingdao, we performed some phylogenetic analyses based on the Internal Transcribed Spacer (ITS) region of the nuclear rDNA, on a larger set of samples. Due to a lack of resolution of this marker at the intraspecific level, we performed some new analyses based on the spacer region between tandemly repeated 5S rDNA. Samples were divided into two groups: the U. linza group, which includes unbranched foliose thalli collected from marine environment; and the U. prolifera group, which includes unbranched folious and well-branched tubular thalli from both seas (including Qingdao samples) and rivers. The bloom samples and a part of the attached samples had identical sequences for the 5S rDNA spacer region. ML tree and statistical parsimony network (SPN) tree indicated that they were closely related with populations from the Sea of Japan. Other attached samples of the Qingdao area possessed identical sequence to samples widely distributed on the Pacific coast of Japan, from Okinawa to the Kanto area.
内容記述
Proceedings of 4th JSPS-VAST Joint Seminar on 'Coastal Marine Science', Hai Phong, Viet Nam, 26-28 October 2009
Oceanography
雑誌名
Coastal marine science
巻
34
号
1
ページ
117 - 122
発行年
2010-08-20
ISSN
13493000
書誌レコードID
AA11957899
日本十進分類法
452
出版者
International Coastal Research Center, Atmosphere and Ocean Research Institute, the University of Tokyo
出版者別名
東京大学大気海洋研究所国際沿岸海洋研究センター
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Phylogeographic analysis of the genus Ulva (Ulvales, Chlorophyta), including bloom sample in Qingdao, China
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