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Integrated transcriptome and microRNA analysis reveals molecular responses to high-temperature stress in the liver of American shad (Alosa sapidissima)

文献类型： 外文期刊

作者： Liu, Ying 1 ; Liang, Zhengyuan 1 ; Li, Yulin 1 ; Zhu, Wenbin 2 ; Feng, Bingbing 3 ; Xu, Wei 3 ; Fu, Jianjun 2 ; Wei, Panpan 4 ; Luo, Mingkun 1 ; Dong, Zaijie 1 ;

作者机构： 1.Nanjing Agr Univ, Wuxi Fisheries Coll, Wuxi, Jiangsu, Peoples R China

2.Chinese Acad Fishery Sci, Freshwater Fisheries Res Ctr, Key Lab Freshwater Fisheries & Germplasm Resources, Minist Agr & Rural Affairs, Wuxi, Jiangsu, Peoples R China

3.Fisheries Technol Extens Ctr Jiangsu Prov, Nanjing, Jiangsu, Peoples R China

4.Rescue Ctr Qinghai Lake Naked Carp, Qinghai Prov Key Lab Breeding & Protect Gymnocypri, Xining, Qinghai, Peoples R China

关键词： Alosa sapidissima; Heat stress; Liver; Genes; miRNAs

期刊名称：BMC GENOMICS （ 影响因子：3.5； 五年影响因子：4.1 ）

ISSN： 1471-2164

年卷期： 2024 年 25 卷 1 期

页码：

收录情况： SCI

摘要： BackgroundFish reproduction, development and growth are directly affected by temperature, investigating the regulatory mechanisms behind high temperature stress is helpful to construct a finer molecular network. In this study, we systematically analyzed the transcriptome and miRNA information of American shad (Alosa sapidissima) liver tissues at different cultivation temperatures of 24 degree celsius (Low), 27 degree celsius (Mid) and 30 degree celsius (High) based on a high-throughput sequencing platform. ResultsThe results showed that there were 1594 differentially expressed genes (DEGs) and 660 differentially expressed miRNAs (DEMs) in the LowLi vs. MidLi comparison group, 473 DEGs and 84 DEMs in the MidLi vs. HighLi group, 914 DEGs and 442 DEMs in the LowLi vs. HighLi group. These included some important genes and miRNAs such as calr, hsp90b1, hsp70, ssa-miR-125a-3p, ssa-miR-92b-5p, dre-miR-15a-3p and novel-m1018-5p. The DEGs were mainly enriched in the protein folding, processing and export pathways of the endoplasmic reticulum; the target genes of the DEMs were mainly enriched in the focal adhesion pathway. Furthermore, the association analysis revealed that the key genes were mainly enriched in the metabolic pathway. Interestingly, we found a significant increase in the number of genes and miRNAs involved in the regulation of heat stress during the temperature change from 24 degrees C to 27 degrees C. In addition, we examined the tissue expression characteristics of some key genes and miRNAs by qPCR, and found that calr, hsp90b1 and dre-miR-125b-2-3p were significantly highly expressed in the liver at 27 degree celsius, while novel-m0481-5p, ssa-miR-125a-3p, ssa-miR-92b-5p, dre-miR-15a-3p and novel-m1018-5p had the highest expression in the heart at 30degree celsius. Finally, the quantitative expression trends of 10 randomly selected DEGs and 10 DEMs were consistent with the sequencing data, indicating the reliability of the results. ConclusionsIn summary, this study provides some fundamental data for subsequent in-depth research into the molecular regulatory mechanisms of A. sapidissima response to heat stress, and for the selective breeding of high temperature tolerant varieties.

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