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Transcriptomics Reveal the Effects of Breeding Temperature on Growth and Metabolism in the Early Developmental Stage of Platax teira

文献类型： 外文期刊

作者： Liu, Ming-Jian 1 ; Gao, Jie 2 ; Guo, Hua-Yang 2 ; Zhu, Ke-Cheng 2 ; Liu, Bao-Suo 2 ; Zhang, Nan 2 ; Sun, Jin-Hui 1 ; Zhang, Dian-Chang 2 ;

作者机构： 1.Tianjin Agr Univ, Coll Fisheries, Tianjin 300384, Peoples R China

2.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Key Lab South China Sea Fishery Resources Exploita, Minist Agr & Rural Affairs, Guangzhou 510300, Peoples R China

3.Southern Marine Sci & Engn Guangdong Lab, Guangzhou 511458, Peoples R China

4.Sanya Trop Fisheries Res Inst, Sanya 572018, Peoples R China

5.Guangdong Prov Engineer Technol Res Ctr Marine Bio, Guangzhou 510300, Peoples R China

关键词： Platax teira; temperature; high-throughput sequencing; metabolism; TCA cycle; PPAR pathway

期刊名称：BIOLOGY-BASEL （ 影响因子：4.2； 五年影响因子：4.4 ）

ISSN：

年卷期： 2023 年 12 卷 9 期

页码：

收录情况： SCI

摘要： The growth, development, and survival of fish, especially in the early stages of development, is influenced by a complex of environmental factors, among which temperature is one of the most important. Although the physiological effects of environmental stress in fish have been extensively studied, the molecular mechanisms are poorly understood. However, recent advances in transcriptomic techniques have facilitated the study of the molecular mechanisms of environmental stress responses in aquatic species. Here, we aimed to elucidate the effects of breeding temperatures (21, 24, 27, and 30 degrees C) on the growth and nutrient metabolism in the early developmental stage of Platax teira, using transcriptomic techniques. Transcriptomic analysis identified 5492, 6937, and 4246 differentially expressed genes (DEGs) in the 21 vs. 24 degrees C, 27 vs. 24 degrees C, and 30 vs. 24 degrees C comparisons, respectively, most of which were involved in cell processes, single organism, metabolism, catalytic activity, and cell part, based on gene ontology (GO) functional annotations. Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis showed that the DEGs were mainly enriched in pathways related to metabolism of matter and energy, protein digestion and absorption, and glucose and lipid metabolism. Additionally, the expression of genes related to energy, lipid, and glucose metabolism in the fish liver was upregulated under a low-temperature condition (21 degrees C), although increasing the temperature within the acceptable threshold improved nutrient metabolism and growth in the fish. Meanwhile, nutrient metabolism and growth were suppressed by an extremely high temperature (30 degrees C) owing to oxidative stress. Overall, it was shown that nutrient metabolism pathways were involved in thermal stress responses in P. teira, and the optimal breeding temperature range was 24-27 degrees C. Through transcriptomics, the regulatory mechanism of larval development in P. teira under different growth temperatures was elucidated, with the goal of establishing a theoretical basis for industrial breeding.

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