数字农科院2.0

Characteristics of Transcriptome and Metabolome Concerning Intramuscular Fat Content in Beijing Black Pigs

文献类型: 外文期刊

作者: Xinhua Hou;Run Zhang;Man Yang;Naiqi Niu;Wencheng Zong;Liyu Yang;Huihui Li;Renda Hou;Xiaoqing Wang;Ligang Wang;Xin Liu;Lijun Shi;Fuping Zhao;Lixian Wang;Longchao Zhang

作者机构:

关键词: IMF;meat quality;metabolomics;pig;skeletal muscle;transcriptomics

期刊名称: Journal of agricultural and food chemistry

ISSN: 1520-5118

年卷期: 2023 年 71 卷 42 期

页码:

收录情况: SCIE(2023版) ; ; EI(2023版)

摘要: To study the characteristics of genes and metabolites related to intramuscular fat (IMF) content with less influence by breed background and individual differences, the skeletal muscle samples from 40 Beijing black pigs with either high or low IMF content were used to perform transcriptome and metabolome analyses. About 99 genes (twofold-change) were differentially expressed. Up-regulated genes in the high IMF pigs were mainly related to fat metabolism. The key genes in charge of IMF deposition are ADIPOQ, CIDEC, CYP4B1, DGAT2, LEP, OPRL1, PLIN1, SCD, and THRSP. KLHL40, TRAFD1, and HSPA6 were novel candidate genes for the IMF trait due to their high abundances. In the low IMF pigs, the differentially expressed genes involved in virus resistance were up-regulated. About 16 and 18 differential metabolites (1.5 fold-change) were obtained in the positive and negative modes, respectively. Pigs with low IMF had weaker fatty acid oxidation due to the down-regulation of various carnitines. Differentially expressed genes were more important in determining IMF deposition than differential metabolites because relatively few differential metabolites were obtained, and they were merely the products under the physiological status of diverged IMF content. This study provided valuable information for further studies on IMF deposition.

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