Toxicological response of Pacific white shrimp Litopenaeus vannamei to a hazardous cyanotoxin nodularin exposure
文献类型： 外文期刊
作者： Duan, Yafei 1 ; Xing, Yifu 1 ; Huang, Jianhua 1 ; Nan, Yuxiu 1 ; Li, Hua 1 ; Dong, Hongbiao 1 ;
作者机构： 1.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Key Lab South China Sea Fishery Resources Exploita, Guangdong Prov Key Lab Fishery Ecol & Environm,Min, Guangzhou 510300, Peoples R China
2.Sanya Trop Fisheries Res Inst, Key Lab Efficient Utilizat & Proc Marine Fishery R, Sanya 572018, Peoples R China
3.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, 231 Xingangxi Rd, Guangzhou 510300, Peoples R China
关键词： Shrimp; Cyanotoxins; Oxidative stress; Intestinal microbiota; Gene transcription; Metabolites
期刊名称：ENVIRONMENTAL POLLUTION （ 影响因子：8.9； 五年影响因子：9.5 ）
ISSN： 0269-7491
年卷期： 2023 年 318 卷
页码：
收录情况： SCI
摘要： Nodularin (NOD) is a harmful cyanotoxin that affects shrimp farming. The hepatopancreas and intestine of shrimp are the main target organs of cyanotoxins. In this study, we exposed Litopenaeus vannamei to NOD at 0.1 and 1 mu g/L for 72 h, respectively, and changes in histology, oxidative stress, gene transcription, metabolism, and intestinal microbiota were investigated. After NOD exposure, the hepatopancreas and intestine showed obvious histopathological damage and elevated oxidative stress response. Transcription patterns of immune genes related to detoxification, prophenoloxidase and coagulation system were altered in the hepatopancreas. Furthermore, metabolic patterns, especially amino acid metabolism and arachidonic acid related metabolites, were also disturbed. The integration of differential genes and metabolites revealed that the functions of "alanine, aspartic acid and glutamate metabolism" and "aminoacyl-tRNA biosynthesis" were highly affected. Alternatively, NOD exposure induced the variation of the diversity and composition of intestinal microbiota, especially the abun-dance of potentially beneficial bacteria (Demequina, Phyllobacterium and Pseudoalteromonas) and pathogenic bacteria (Photobacterium and Vibrio). Several intestinal bacteria were correlated with the changes of host the metabolic function and immune factors. These results revealed the toxic effects of NOD on shrimp, and identified some biomarkers.
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