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Journal of Ocean University of China

, Volume 18, Issue 6, pp 1507–1514 | Cite as

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

  • Weijie Shen
  • Yuan He
  • Songdong ShenEmail author
Article
  • 14 Downloads

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.

Key words

LSU IGS Ulva prolifera green tide morphological characteristics 

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Notes

Acknowledgements

This work was supported by the National Key R&D Program of China (Nos. 2016YFC1402102 and 2016YFC 1402104) and the National Natural Science Foundation of China (No. 41276134). Thank Captain Lin Wei in the collection of experimental samples.

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Copyright information

© Ocean University of China, Science Press and Springer-Verlag GmbH Germany 2019

Authors and Affiliations

  1. 1.Department of Cell Biology, College of Biology and Basic Medical SciencesSoochow UniversitySuzhouChina

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