Stress response of rainbow trout fry after exposure to an elevated concentration of carbon dioxide based on transcriptome analysis
文献类型： 外文期刊
作者： Chen, Yan 1 ; Bai, Yucen 3 ; Hu, Xiaolu 3 ; Yang, Xiaofei 2 ; Xu, Shaogang 2 ; Cheng, Bo 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Minist Agr & Rural Affairs, Key Lab Aquat Prod Proc, Beijing, Peoples R China
2.Beijing Acad Agr & Forestry Sci, Beijing Key Lab Fishery Biotechnol, Inst Fisheries Res, Natl Engn Res Ctr Freshwater Fisheries, Beijing, Peoples R China
3.China Rural Technol Dev Ctr, 54 Sanlihe Rd, Beijing 100045, Peoples R China
关键词： Carbon dioxide; Transcriptome; HSPs; Ubiquitin-proteasome
期刊名称：ICHTHYOLOGICAL RESEARCH （ 影响因子：1.223； 五年影响因子：1.162 ）
ISSN： 1341-8998
年卷期：
页码：
收录情况： SCI
摘要： To investigate the mechanism of future predicted increases in carbon dioxide (CO2)-induced gill remolding in early life stages of fish, we evaluated physiological responses and performed transcriptome sequencing analysis of rainbow trout Oncorhynchus mykiss fry after 60 days of 1,000 ppm CO2 exposure. The malondialdehyde (MDA) content increased and key antioxidant enzymes were significantly inhibited, indicating that exposure to high CO2 may disrupt cellular redox homeostasis in the gill. The transcriptome sequencing analysis provided a list of possible stress responses of rainbow trout fry exposed to 1,000 ppm CO2. The upregulated uncoupling protein 2 and downregulated differentially expressed genes (DEGs) enriched in oxidative phosphorylation pathway tried to reduce oxidative stress. The upregulated DEGs enriched in ribosome biogenesis in eukaryotes pathway together with the induced heat shock proteins (HSPs) and ubiquitin-conjugated proteins occurred in treated fish to prevent the accumulation of aggregated proteins in gill tissue of the rainbow trout fry after the exposure of 1,000 ppm CO2.
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