低温胁迫对军曹鱼幼鱼脂代谢相关基因表达的影响

蔡润佳; 张静; 黄建盛; 施钢; 潘传豪; 谢瑞涛; 陈刚; 张健东; 王忠良; 汤保贵

doi:10.12284/hyxb2021122

低温胁迫对军曹鱼幼鱼脂代谢相关基因表达的影响

doi: 10.12284/hyxb2021122

蔡润佳^{1, 2,},
张静^{1, 2},
黄建盛¹,
施钢¹,
潘传豪¹,
谢瑞涛¹,
陈刚¹,
张健东¹,
王忠良¹,
汤保贵^{1, 2, 3, ,}

1.
广东海洋大学水产学院，广东湛江 524088
2.
南方海洋科学与工程广东省实验室(湛江)，广东湛江 524025
3.
广东省水产经济动物病原生物学及流行病学重点实验室，广东湛江 524088

基金项目: 南方海洋科学与工程广东省实验室(湛江)项目(ZJW-2019-06)；湛江市海洋经济创新发展示范市项目(XM-202008-03)；国家海水鱼产业技术体系项目(CARS-47-G08)

详细信息

作者简介:
蔡润佳(1995- )，男，广东省汕头市人，研究方向为水产经济动物生物学。E-mail：906636294@qq.com

通讯作者:
汤保贵(1975- )，博士，副教授，主要研究方向为鱼类养殖与遗传育种。E-mail：zjtbg@163.com

中图分类号: S965.399
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出版历程
- 收稿日期: 2021-01-01
- 修回日期: 2021-03-30
- 网络出版日期: 2021-05-08
- 刊出日期: 2021-12-31

Effects of low temperature stress on the expression of genes related to lipid metabolism of juvenile cobia, Rachycentron canadum

1.
Fishery College, Guangdong Ocean University, Zhanjiang 524088, China
2.
Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang 524025, China
3.
Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animals, Zhanjiang 524088, China

摘要

摘要: 将两组军曹鱼(Rachycentron canadum)幼鱼分别在常温(30.5±1.0)℃和低温(20.0±0.5)℃环境下饲养7 d，并于第1天、第4天、第7天3个时间点采集肝脏、肌肉和腹腔脂肪，利用实时荧光定量PCR(qRT-PCR)技术分析5个脂代谢相关基因的表达变化情况，以探究低温胁迫对军曹鱼脂质合成与分解代谢的影响。结果显示，第1天时，肝脏的肉碱脂酰基转移酶-1基因(cpt-1)、脂肪激素敏感脂肪酶基因(hsl)以及肌肉的cpt-1、hsl、单酰基甘油酯酶基因(mgl)等显著上调(p<0.05)，肝脏、肌肉的乙酰辅酶A羧化酶基因(acc)和脂肪酸合成酶基因(fas)以及腹腔脂肪(IPF)5个脂代谢相关基因表达均显著下调(p<0.05)；第4天时，肝脏的cpt-1、hsl、mgl和肌肉的hsl、mgl、acc、fas以及IPF的cpt-1、hsl、mgl、acc等表达上调(p<0.05)，肝脏的acc、fas表达显著下调(p<0.05)；第7天时，肝脏和IPF的cpt-1、hsl、mgl、acc和肌肉的hsl、mgl、acc等表达上调(p<0.05)，肌肉cpt-1和肝脏fas表达显著下调(p<0.05)。结果表明，军曹鱼幼鱼在低温胁迫前期通过抑制脂合成代谢，促进肝脏和肌肉中的脂质水解，通过抑制腹腔脂肪的脂质分解来响应低温胁迫；在低温胁迫后期，军曹鱼幼鱼脂合成和分解代谢均显著提高，且利用脂肪酸提供能量的主要组织由前期的肝脏和肌肉转变为肝脏和腹腔脂肪。
- 低温胁迫 /
- 脂代谢 /
- 基因表达 /
- 军曹鱼 /
- 实时荧光定量PCR
Abstract: In order to explore the effects of low temperature stress on the expression of genes related to lipid synthesis and catabolism in cobia (Rachycentron canadum), the experiment set up a normal temperature group (30.5±1.0)°C and a low temperature group (20.0±0.5)°C, and used real-time fluorescent quantitative PCR (qRT-PCR) to analyze the expression levels of 5 target genes in liver, muscle and intraperitoneal fat (IPF). The results showed that at 1 d, the expression of carnitine palmitoyl transferase-1 and hormone-sensitive lipase genes of liver, carnitine palmitoyl transferase-1, hormone-sensitive lipase and monoacylglycerol lipase genes of muscle were up-regulated (p<0.05), acetyl-CoA carboxylase and fatty acid synthase genes of liver, muscle and 5 lipid metabolism related genes of IPF were significantly down-regulated (p<0.05); at 4 d, the expression of carnitine palmitoyl transferase-1, hormone-sensitive lipase and monoacylglycerol lipase genes of liver, and hormone-sensitive lipase, monoacylglycerol lipase, acetyl-CoA carboxylase, fatty acid synthase genes of muscle and carnitine palmitoyl transferase-1, hormone-sensitive lipase, monoacylglycerol lipase, acetyl-CoA carboxylase genes of IPF were up-regulated (p<0.05), acetyl-CoA carboxylase and fatty acid synthase gene of liver were down-regulated (p<0.05); at 7 d, the expressions of carnitine palmitoyl transferase-1, hormone-sensitive lipase, monoacylglycerol lipase, acetyl-CoA carboxylase genes of liver and IPF, and hormone-sensitive lipase, monoacylglycerol lipase, acetyl-CoA carboxylase genes of muscle were up-regulated (p<0.05), carnitine palmitoyl transferase-1 gene of muscle and fatty acid synthase genes of liver were down-regulated (p<0.05). The results showed that cobia responded to low temperature stress by inhibiting lipid synthesis and metabolism, promoting lipid hydrolysis in the liver and muscle, and inhibiting the lipid hydrolysis of IPF in the early stage of low temperature stress; in the late period of low temperature stress, cobia lipid synthesis and catabolism were significantly increased, and the main tissue that used fatty acids to provide energy was transformed from the liver and muscle to liver and IPF.
- low temperature stress /
- lipid metabolism /
- gene expression /
- Rachycentron canadum /
- real-time qRT-PCR

HTML全文

图 1 低温胁迫下军曹鱼幼鱼3个脂分解相关基因表达量

*表示低温组与同期对照组之间差异显著(p<0.05)；**表示差异极显著(p<0.01)

Fig. 1 Expression of three lipolysis-related genes in juvenile cobia under low temperature stress

* indicates a significant difference (p<0.05); ** indicates extremely significant difference (p<0.01) compared with the control group in the same period

下载: 全尺寸图片幻灯片

图 2 低温胁迫下军曹鱼幼鱼3个脂合成相关基因表达量

*表示低温组与同期对照组之间差异显著(p<0.05)；**表示差异极显著(p<0.01)

Fig. 2 Expression of three lipid synthesis-related genes in juvenile cobia under low temperature stress

* indicates a significant difference (p<0.05) ; ** indicates extremely significant difference (p<0.01) compared with the control group in the same period

下载: 全尺寸图片幻灯片

表 1 本实验引物序列

Tab. 1 The primers used in the experiment

引物名称	序列(5′-3′)	用途
acc-F	TCGCCAGTCTCCCAACTCCTAT	acc荧光定量引物
acc-R	ACCTGTCCACCTCCTCCTTCAT	acc荧光定量引物
fas-F	AGCATCCTGTATCGCCCGTTTGA	fas荧光定量引物
fas-R	GTCGGTCCTGTGGGTCTCCTTGT	fas荧光定量引物
hsl-F	AGCAGTCTGGTTTGGGTTTGGC	hsl荧光定量引物
hsl-R	AGGTTCTGGGTAATGCGTTCA	hsl荧光定量引物
cpt-1-F	TACCGCTTGGCTATGACTGGAC	cpt-1荧光定量引物
cpt-1-R	TTGCTGGAGATGTGGAAGTTGATG	cpt-1荧光定量引物
mgl-F	CACTGCGACCTTTGACCTCTTTG	mgl荧光定量引物
mgl-R	AACCATCCTTCTGGGCGTAATC	mgl荧光定量引物
β-actin-F	AGGGAAATTGTGCGTGAC	内参基因荧光定量引物
β-actin-R	AGGCAGCTCGTAGCTCTT	内参基因荧光定量引物
注：acc为乙酰辅酶A羧化酶基因；fas为脂肪酸合成酶基因；hsl为脂肪激素敏感脂肪酶基因；cpt-1为肉碱脂酰基转移酶-1基因；mgl为单酰基甘油酯酶基因； β-actin为β-肌动蛋白基因。

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