Integrated Transcriptomic and Metabolomic Analyses Reveal Low-Temperature Tolerance Mechanism in Giant Freshwater Prawn Macrobrachium rosenbergii
文献类型： 外文期刊
作者： Tu, Haihui 1 ; Peng, Xin 1 ; Yao, Xinyi 1 ; Tang, Qiongying 1 ; Xia, Zhenglong 2 ; Li, Jingfen 1 ; Yang, Guoliang 1 ; Yi, Shaokui 1 ;
作者机构： 1.Huzhou Univ, Chinese Acad Fishery Sci, Zhejiang Prov Key Lab Aquat Resources Conservat &, Coll Life Sci,Key Lab Aquat Anim Genet Breeding &, Huzhou 313000, Peoples R China
2.Jiangsu Shufeng Prawn Breeding Co Ltd, Gaoyou 225654, Peoples R China
关键词： low-temperature tolerance; gene regulation; metabolite; lipid metabolism; energy metabolism
期刊名称：ANIMALS （ 影响因子：3.0； 五年影响因子：3.2 ）
ISSN： 2076-2615
年卷期： 2023 年 13 卷 10 期
页码：
收录情况： SCI
摘要： Water temperature, as an important environmental factor, affects the growth and metabolism of aquatic animals and even their survival. The giant freshwater prawn (GFP) Macrobrachium rosenbergii is a kind of warm-water species, and its survival temperature ranges from 18 ? to 34 ?. In this study, we performed transcriptomic and metabolomic analyses to clarify the potential molecular mechanism of responding to low-temperature stress in adult GFP. The treatments with low-temperature stress showed that the lowest lethal temperature of the GFP was 12.3 ?. KEGG enrichment analyses revealed that the differentially expressed genes and metabolites were both enriched in lipid and energy metabolism pathways. Some key genes, such as phosphoenolpyruvate carboxykinase and fatty acid synthase, as well as the content of the metabolites dodecanoic acid and alpha-linolenic acid, were altered under low-temperature stress. Importantly, the levels of unsaturated fatty acids were decreased in LS (low-temperature sensitive group) vs. Con (control group). In LT (low-temperature tolerant group) vs. Con, the genes related to fatty acid synthesis and degradation were upregulated to cope with low-temperature stress. It suggested that the genes and metabolites associated with lipid metabolism and energy metabolism play vital roles in responding to low-temperature stress. This study provided a molecular basis for the selection of a low-temperature tolerant strain.
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