Abstract:
:Water temperature affects the survival, growth, immunity, reproduction, and productivity of farmed fish. The temperature beyond suitable range will disrupt the normal physiological activity. Common carp (Cyprinus carpio L.) is a representative eurythermic fish; they are able to sense and respond to changes in water temperature by adjusting their physiology. To investigate the miRNAs in common carp at different temperatures, nine liver small-RNA libraries (5 °C, 17 °C, and 30 °C, each group have three biological repetitions) were constructed and sequenced using high-throughput sequencing. A total of 110 known miRNAs were identified. Twenty-nine known miRNAs were differentially expressed compared with in control group. GO and KEGG analysis indicated that the miRNAs may play important roles in metabolism and environment information processing. Specifically, we considered the insulin-signaling and glycerophospholipid metabolism pathway, and the results show that in 30 °C, miR-301a, miR-203b-5p, and miR-210-3p were upregulated; their target genes which are the mechanistic targets of the rapamycin kinase (mtor) gene and the protein kinase AMP-activated catalytic subunit alpha 1 (prkaa1) gene in the insulin-signaling pathway were downregulated. And miR-9-5p, miR-27d, miR-92b-3p, and miR-155 were upregulated; their target genes, 1-acylglycerol-3-phosphate O-acyltransferase 3 (agpat3), CDP-diacylglycerol-inositol 3-phosphatidyltransferase (cdipt), glycerol-3-phosphate acyltransferase mitochondrial (gpam), and phosphatidylglycerophosphate synthase 1 (pgs1), in glycerophospholipid metabolism pathway were downregulated. But in 5 °C, the situation was opposite. These findings suggest that significant changes occur in energy metabolism and metabolic processes with components of the cell membrane in different temperatures, which significantly advance our understanding of the regulatory mechanisms underlying the physiological change of temperature stress-induced in liver, specifically with regard to miRNAs. These data provide a foundation for further studies of the role of miRNAs in environmental adaptation in fish.
journal_name
Funct Integr Genomicsjournal_title
Functional & integrative genomicsauthors
Sun J,Zhao L,Wu H,Lian W,Cui C,Du Z,Luo W,Li M,Yang Sdoi
10.1007/s10142-018-0643-7subject
Has Abstractpub_date
2019-03-01 00:00:00pages
265-280issue
2eissn
1438-793Xissn
1438-7948pii
10.1007/s10142-018-0643-7journal_volume
19pub_type
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