Meta-Omics Analysis Reveals Global Distribution of Toxic Pseudo-nitzschia and Enhanced Neurotoxin Production Under Climate Warming

文献类型： 外文期刊

第一作者： Xu, Dong

作者： Xu, Dong;Wei, Yuqiu;Zheng, Guanchao;Luan, Qingshan;Huang, Xintong;Sun, Yanmin;Zhang, Xiaowen;Sun, Ke;Fan, Xiao;Wang, Yitao;Tan, Zhijun;Ye, Naihao;Xu, Dong;Ye, Naihao;Wang, Zhuonan;Brennan, Georgina L.;Yang, Jia;Bowler, Chris;Pierella Karlusich, Juan J.;Fu, Fei-Xue;Hutchins, David A.;Gao, Guang;Gao, Guang

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关键词： global distribution; global model; global warming; meta-omics analysis; neurotoxin production; Pseudo-nitzschia

期刊名称：GLOBAL CHANGE BIOLOGY （ 影响因子：12.0； 五年影响因子：14.0 ）

ISSN： 1354-1013

年卷期： 2025 年 31 卷 7 期

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收录情况： SCI

摘要： The harmful diatom Pseudo-nitzschia produces the neurotoxin domoic acid (DA), threatening human health and seafood safety in a changing climate. However, global patterns of Pseudo-nitzschia abundance and the responses of DA production to underlying environmental drivers remain poorly understood, hindering accurate projections of their responses to environmental change. Using global meta-omics data from Tara Oceans, alongside field survey data from the Chinese coasts and the Southern Ocean, we present the first evidence that four of the most toxic species-Pseudo-nitzschia multiseries, Pseudo-nitzschia multistriata, Pseudo-nitzschia delicatissima, and Pseudo-nitzschia pungens-are prevalent not only in coastal ecosystems but also in open ocean environments, spanning from pole to pole. We identify rising temperatures are recognized as a key driver of Pseudo-nitzschia's spatial distribution, DA production, and biosynthetic metabolism. Global models suggest that by 2100, under the SSP2-4.5 climate scenario, the abundance of P. multiseries will increase by approximately 75.4%, while toxin production will be even more significantly enhanced, rising by up to 200.4%. This study significantly expands the known global distribution of these neurotoxin-producing diatoms and predicts their increasing prevalence and toxicity under future global changes.

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