Ulva and Enteromorpha (Ulvaceae, Chlorophyta) from two sides of the Yellow Sea: analysis of nuclear rDNA ITS and plastid rbcL sequence data |
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| Authors: | Jinfeng Wang Nan Li Peng Jiang Sung Min Boo Wook Jae Lee Yulin Cui Hanzhi Lin Jin Zhao Zhengyi Liu Song Qin |
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| Institution: | (1) Ningbo Entry–Exit Inspection and Quarantine Bureau, No. 9, Mayuan Road, Haishu District, Ningbo, Zhejiang Province, 315012, People’s Republic of China;(2) Ningbo Academy of Inspection and Quarantine, No. 9, Mayuan Road, Haishu District, Ningbo, Zhejiang Province, 315012, People’s Republic of China;(3) Xuzhou Normal University, No. 29, Shanghai Road, Tongshan New Borough, Xuzhou, Jiangsu Province, 221116, People’s Republic of China;(4) Institute of Animal and Plant Quarantine, Chinese Academy of Inspection and Quarantine, No. 241, Huixin West Road, Chaoyang District, Beijing, 100121, People’s Republic of China;(5) Xiangshan Xuwen Seaweed Development Co., Ltd., No. 150, Ningzhou Road, Jiangdong District, Ningbo, Zhejiang Province, 315040, People’s Republic of China;(6) Qingdao Entry–Exit Inspection and Quarantine Bureau, No.2, Zhongshan Road, Shinan District, Qingdao, Shangdong Province, 266001, People’s Republic of China; |
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| Abstract: | Ulvacean green seaweeds are common worldwide; they formed massive green tides in the Yellow Sea in recent years, which caused
marine ecological problems as well as a social issue. We investigated two major genera of the Ulvaceae, Ulva and Enteromorpha, and collected the plastid rbcL and nuclear ITS sequences of specimens of the genera in two sides of the Yellow Sea and analyzed them. Phylogenetic trees
of rbcL data show the occurrence of five species of Enteromorpha (E. compressa, E. flexuosa, E. intestinalis, E. linza and E. prolifera) and three species of Ulva (U. pertusa, U. rigida and U. ohnoi). However, we found U. ohnoi, which is known as a subtropical to tropical species, at two sites on Jeju Island, Korea. Four ribotypes in partial sequences
of 5.8S rDNA and ITS2 from E. compressa were also found. Ribotype network analysis revealed that the common ribotype, occurring in China, Korea and Europe, is connected
with ribotypes from Europe and China/Japan. Although samples of the same species were collected from both sides of the Yellow
Sea, intraspecific genetic polymorphism of each species was low among samples collected worldwide. |
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