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新西兰沿海水域浮游硅藻属的更新：遗传多样性和毒素产生。

Update of the Planktonic Diatom Genus in Aotearoa New Zealand Coastal Waters: Genetic Diversity and Toxin Production.

机构信息

Cawthron Institute, Nelson 7010, New Zealand.

Biology Department, Faculty of Science, Istanbul University, Istanbul 34134, Turkey.

出版信息

Toxins (Basel). 2021 Sep 10;13(9):637. doi: 10.3390/toxins13090637.

DOI:10.3390/toxins13090637
PMID:34564641
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8473122/
Abstract

Domoic acid (DA) is produced by almost half of the species belonging to the diatom genus and causes amnesic shellfish poisoning (ASP). It is, therefore, important to investigate the diversity and toxin production of species for ASP risk assessments. Between 2018 and 2020, seawater samples were collected from various sites around Aotearoa New Zealand, and 130 clonal isolates of were established. Molecular phylogenetic analysis of partial large subunit ribosomal DNA and/or internal transcribed spacer regions revealed that the isolates were divided into 14 species (, , , , , , , , , , , , , and cf. ). The and strains were further divided into two clades/subclades (I and II). Liquid chromatography-tandem mass spectrometry was used to assess the production of DA and DA isomers by 73 representative strains. The analyses revealed that two ( and ) of the 14 species produced DA as a primary analogue, along with several DA isomers. This study is the first geographical distribution record of , , , and in New Zealand coastal waters.

摘要

软骨藻酸（DA）是由属的近一半物种产生的，可引起记忆丧失性贝类中毒（ASP）。因此，为了进行 ASP 风险评估，研究物种的多样性和毒素产生情况非常重要。在 2018 年至 2020 年期间，从新西兰奥塔哥各地的不同地点采集了海水样本，并建立了 130 个克隆分离株。对部分大亚基核糖体 DNA 和/或内部转录间隔区的分子系统发育分析表明，这些分离株分为 14 个种（，，，，，，，，，，，，和 cf.）。和 株进一步分为两个分支/亚分支（I 和 II）。采用液相色谱-串联质谱法评估了 73 个代表性菌株产生 DA 和 DA 异构体的情况。分析表明，14 个种中的两个（和）作为主要类似物产生了 DA，以及几种 DA 异构体。本研究是新西兰沿海水域软骨藻酸、、、和 的首次地理分布记录。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aef9/8473122/67fe0bc10eca/toxins-13-00637-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aef9/8473122/09100d52bdfb/toxins-13-00637-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aef9/8473122/c4566337b59a/toxins-13-00637-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aef9/8473122/d20e1767e4b8/toxins-13-00637-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aef9/8473122/083e1029b709/toxins-13-00637-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aef9/8473122/72203d442237/toxins-13-00637-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aef9/8473122/ea221b1370ca/toxins-13-00637-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aef9/8473122/bd2ccb0fb731/toxins-13-00637-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aef9/8473122/67fe0bc10eca/toxins-13-00637-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aef9/8473122/09100d52bdfb/toxins-13-00637-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aef9/8473122/c4566337b59a/toxins-13-00637-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aef9/8473122/d20e1767e4b8/toxins-13-00637-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aef9/8473122/083e1029b709/toxins-13-00637-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aef9/8473122/72203d442237/toxins-13-00637-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aef9/8473122/ea221b1370ca/toxins-13-00637-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aef9/8473122/bd2ccb0fb731/toxins-13-00637-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aef9/8473122/67fe0bc10eca/toxins-13-00637-g008.jpg

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