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      A New Molecular Label Applied to the Study of the Yellow Sea Green Tide

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          Abstract

          From 2007 to 2017, large-scale green tides occurred every year in the Yellow Sea of China, and Ulva prolifera was the main species leading to the green tide. In this study, we used the Polymerase chain reaction and 3’ Rapid-amplification of cDNA ends technique to amplify the nrDNA-LSU and IGS sequences in U. prolifera and one species of Blidingia. These techniques showed 3259 bp of nrDNA-LSU and 3388 bp of IGS in U. prolifera and 3282 bp nrDNA-LSU and 3059 bp IGS in Blidingia sp. At the same time, tandem repeats, short dyads, palindromic and multiple simple repeat sequences in the IGS sequence were found by analyzing the structure of the IGS sequence in U. prolifera and Blidingia sp. G + C contents of the IGS sequence in U. prolifera and Blidingia sp. were 52.42% and 53.09%, respectively. We divided the U. prolifera into two types according to the morphological characteristics. Although the specimens of U. prolifera from the Qingdao coastal area, Jiangsu coastal area and the Yellow Sea have different morphologies, their ITS and IGS sequences are almost identical. Therefore, the main species of the green tides in the Qingdao coastal area, Jiangsu coastal area and the Yellow Sea are the same and have the same origin.

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          Author and article information

          Journal
          JOUC
          Journal of Ocean University of China
          Science Press and Springer (China )
          1672-5182
          12 November 2019
          01 December 2019
          : 18
          : 6
          : 1507-1514
          Affiliations
          1Department of Cell Biology, College of Biology and Basic Medical Sciences, Soochow University, Suzhou 215123, China
          Author notes
          *Corresponding author: SHEN Songdong
          Article
          s11802-019-3988-1
          10.1007/s11802-019-3988-1
          Copyright © Ocean University of China, Science Press and Springer-Verlag GmbH Germany 2019.

          The copyright to this article, including any graphic elements therein (e.g. illustrations, charts, moving images), is hereby assigned for good and valuable consideration to the editorial office of Journal of Ocean University of China, Science Press and Springer effective if and when the article is accepted for publication and to the extent assignable if assignability is restricted for by applicable law or regulations (e.g. for U.S. government or crown employees).

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          Self URI (journal-page): https://www.springer.com/journal/11802

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