Transcriptome sequencing of the spleen of the Yangtze sturgeon (Acipenser dabryanus) under Edwardsiella tarda and poly(I:C) treatments
文献类型: 外文期刊
作者: Gong, Quan 1 ; Chen, Yeyu 1 ; Wu, Xiaoyun 1 ; Lai, Jiansheng 1 ; Liu, Ya 1 ; Song, Mingjiang 1 ; Li, Feiyang 1 ;
作者机构: 1.Sichuan Acad Agr Sci, Fishery Inst, Chengdu 611730, Peoples R China
关键词: Acipenser dabryanus; SMRT sequencing; Illumina sequencing; Immunity -related genes; Metabolism
期刊名称:AQUACULTURE REPORTS ( 影响因子:3.7; 五年影响因子:3.8 )
ISSN: 2352-5134
年卷期: 2023 年 28 卷
页码:
收录情况: SCI
摘要: Acipenser dabryanus is an ancient living fossil and a flagship species of the Yangtze River. However, A. dabryanus was listed as a critically endangered species due to the dramatic decrease in its population, and disease outbreaks occurring during captive breeding have hindered the protection of this species. Here, we investigated the effect of the pathogenic bacterium Edwardsiella tarda and poly(I:C) on A. dabryanus at the histopathological and transcriptomic levels. After 48 h of infection with E. tarda, A. dabryanus exhibited marked pathological changes in the intestine and liver. We then conducted full-length transcriptome sequencing of the spleen by SMRT sequencing technology. Using the full-length transcriptome data as a reference, transcriptomic results obtained through Illumina sequencing technology revealed that a total of 894 and 963 unigenes were differentially expressed between the PBS and bacterial infection groups and between the PBS and poly(I:C) challenge groups, respectively. E3 ubiquitin ligases family members, T-cell receptor and clusters of differentiation were significantly upregulated by bacteria or poly(I:C) treatment, while the complement was significantly downregulated, suggesting that they might participate in multiple immune pathways in the response to pathogen invasion. Pathogen infection also induced changes in some key rate-limiting enzymes involved in energy metabolism. Our study can provide important information on the molecular mechanisms underlying the immune response of fish to pathogenic microbial infections and help explore the antibacterial and antiviral immunity of A. dabryanus.
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