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. 2014 Dec 15;89(1-2):209-219.
doi: 10.1016/j.marpolbul.2014.09.056. Epub 2014 Oct 25.

Molecular phylogeny and PSP toxin profile of the Alexandrium tamarense species complex along the coast of China

Cheng Zou  1 , Rui-Min Ye  1 , Jian-Wei Zheng  1 , Zhao-He Luo  2 , Hai-Feng Gu  3 , Wei-Dong Yang  4 , Hong-Ye Li  1 , Jie-Sheng Liu  1
Affiliations

Molecular phylogeny and PSP toxin profile of the Alexandrium tamarense species complex along the coast of China

Cheng Zou et al. Mar Pollut Bull. .

Abstract

To explore the genetic diversity and paralytic shellfish poisoning (PSP) toxin profile of the Alexandrium tamarense species complex along the coast of China, 67 strains of A. tamarense from the China Sea were collected and genetic diversity were analyzed based on the rDNA sequences. In addition, PSP toxin compositions and contents were detected by HPLC. According to the 5.8S rDNA and ITS, and LSU rDNA D1-D2 sequence, A. tamarense in the China Sea comprises at least Group IV and Group I ribotypes. In these Chinese strains, the toxins with the highest concentration in the profile were C1/2, gonyautoxins 1/4 (GTX1/4) and neosaxitoxin (NEO). However, the toxin profiles were atypical and C1/2 toxins were not detected in some strains. No strict correlation was observed between the PSP toxins profile and the geographical distribution.

Keywords: ITS; LSU; PSP toxins; The Alexandrium tamarense species complex.

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