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首页> 外文期刊>Environmental Science & Technology >Identifying the Source Organisms Producing Paralytic Shellfish Toxins in a Subtropical Bay in the South China Sea
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Identifying the Source Organisms Producing Paralytic Shellfish Toxins in a Subtropical Bay in the South China Sea

机译：鉴定在南海亚热带湾的源生物体产生瘫痪贝类毒素的源生物

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摘要

Identifying the exact phytoplanktonic sources of paralytic shellfish toxins (PSTs) is crucial for monitoring and preventing the buildup of toxin pollution, especially for causative species occurring at low levels. Phytoplankton and shellfish samples were simultaneously collected from representative mariculture zones in Daya Bay, China. Low concentration/low toxicity PSTs predominated with N-sulfocarbamoyl toxins 1, 2 (C1/2) being detected in phytoplankton (≤6.25 pmol L~(-1)) and shellfish (≤0.21 μg STX_(eq) g~(-1)), which pose a potential risk of seafood poisoning. High-throughput sequencing of the phytoplankton samples based on 18S rDNA V4 regions identified 93 genera in 445 operational taxonomic units (OTUs). Five OTUs were assigned to Alexandrium hiranoi, Ambicodatnus leei, Alexandrium pacificum, Alexandrium minutum, and an uncertain Alexandrium sp. A pacificum and A, tninutum are candidate PST producers and observed under the light microscope with densities of 66-972 cells L~(-1). Three strains of toxigenic species were successfully isolated and identified as A. pacificum and A. minutum based on their 18S rDNA V4 regions. The predominant toxins in A. pacificum were C1/2 (43.9-53.6 fmol ceir~(-1)) and resembled the toxins found in field samples predominated with C1/2. A. minutum produced only gonyautoxins 2/3 (8.03 fmol cell~(-1)). Therefore, A. pacificum was identified as the predominant PST contributor in this area. This research makes a valuable contribution to the understanding of the traceability of phycotoxins in marine waters.
机译：鉴定麻痹性贝类毒素（PSTS）的精确浮游植物来源对于监测和预防毒素污染的累积至关重要，特别是对于低水平发生的致病物种。同时从Daya Bay的代表性养水区同时收集植物植物和贝壳样品。低浓度/低毒性Psts占据在浮游植物（≤6.25pm​​oll〜（-1））和贝类（≤0.21μgstx_（eq）g〜（-1）中检测在浮游植物（≤6.25pm​​oll〜（-1））中检测到（c1 / 2）。 ）），它构成了海鲜中毒的潜在风险。基于18S rDNA V4区域的植物植物样品的高通量测序鉴定了445个运营分类单位（OTUS）中的93个属。将五个Otus分配给Alexandrium Hiranoi，Ambicodatnus Leei，Alexandrium Pacififum，亚历山大省小植物，以及一个不确定的亚历山大SP。 Pacificum和A，TNinutum是候选PST生产商，并在光学显微镜下观察，密度为66-972个细胞L〜（-1）。基于其18秒的RDNA V4区域成功分离出三种毒素种类的毒素物种和鉴定为A. pacificum和A.小植物。 A. pacificum中的主要毒素是C1 / 2（43.9-53.6 FMOL CEIR〜（-1）），并且类似于田间样品中发现的毒素，其占由C1 / 2的田间。 A. Minutum仅制作Gonyautoxins 2/3（8.03 Fmol细胞〜（-1））。因此，A.Pacificum被确定为该区域的主要PST贡献者。这项研究对对海水中的植物毒素的可追溯性的可追溯性进行了有价值的贡献。

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  • 来源
    《Environmental Science & Technology》 |2021年第5期|3124-3135|共12页
  • 作者

    Yang Liu; Zhenfan Chen; Yue Gao; Jian Zou; Songhui Lu; Li Zhang;

  • 作者单位

    Key Laboratory of Tropical Marine Bio-resources and Ecology Guangdong Provincial Key Laboratory of Applied Marine Biology South China Sea Institute of Oceanology Chinese Academy of Sciences Guangzhou 510301 China Institution of South China Sea Ecology and Environmental Engineering Chinese Academy of Sciences Guangzhou 510301 China;

    Shenzhen Key Laboratory of Marine Bioresource and Eco-environmental Science Shenzhen Engineering Laboratory jor Marine Algal Biotechnology Guangdong Provincial Key Laboratory for Plant Epigenetics College of Life Sciences and Oceanography Shenzhen University Shenzhen 518060 China;

    State Key Laboratory of Marine Environmental Science Xiamen University Xiamen 361005 China;

    Research Center of Harmful Algae and Marine Biology Jinan University Guangzhou 510632 China;

    Research Center of Harmful Algae and Marine Biology Jinan University Guangzhou 510632 China;

    Key Laboratory of Tropical Marine Bio-resources and Ecology Guangdong Provincial Key Laboratory of Applied Marine Biology South China Sea Institute of Oceanology Chinese Academy of Sciences Guangzhou 510301 China Institution of South China Sea Ecology and Environmental Engineering Chinese Academy of Sciences Guangzhou 510301 China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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