ZHANG Dong-jie,WANG Liang,LI Zhong-qiu,et al.Effect of Low Temperature on Mitochondria of ?Different Muscle in Pig[J].HEILONGJIANG AGRICULTURAL SCIENCES,2017,(05):62-66.[doi:10.11942/j.issn1002-2767.2017.05.0062]
低温环境对猪不同肌肉组织线粒体的影响
- Title:
- Effect of Low Temperature on Mitochondria of ?Different Muscle in Pig
- 文章编号:
- 1002-2767(2017)05-0062-05
- Keywords:
- Min pig; large white pig; muscle tissue; mtDNA; real-time PCR
- 分类号:
- S828
- 文献标志码:
- A
- 摘要:
- 猪是对外界环境温度较为敏感的一种恒温动物。为了探讨低温环境对猪肌肉组织线粒体的影响以及民猪与大白猪间的代谢差异,以民猪(耐寒品种)和大白猪(非耐寒品种)为试验材料,采用Real-time PCR的相对定量方法,检测了轻度和重度冷处理下两个猪种的腓肠肌、比目鱼肌及趾长伸肌线粒体DNA变化情况。结果表明:轻度冷处理下,民猪腓肠肌、比目鱼肌和趾长伸肌的mtDNA表达量均出现了明显的下降,而大白猪则表现为不变或略有上升。重度冷处理下,民猪的腓肠肌显著下降,民猪和大白猪其余的肌肉组织均表现为显著上升,而且比目鱼肌的上升倍数最大。据此认为,轻度冷处理下,民猪各肌肉组织的代谢模式不同于大白猪的;重度冷处理下,以红肌为主的比目鱼肌是颤栗性产热的主要肌肉组织,推测低温环境会诱导肌纤维类型的转化。
- Abstract:
- Pig is one of a warm blooded animal,which is sensitive to the ambient temperature.In order to investigate the low temperature impact of the mitochondria in pig skeletal muscle and difference of metabolism between Min pig and large white pig,Min pig (cold tolerance breed) and large white pig (non-cold tolerance breed) were disposed as experimental materials.The relative quantitative method of real-time PCR was used.The change of mitochondrial DNA in gastrocnemius,soleus muscle and extensor longus digitorum under mild and severe cold treatment were detected.The results showed that under the mild cold treatment,the expression of Min pig gastrocnemius,soleus and extensor longus digitorum mtDNA were all declined,while the large white pig was unchanged or slightly increased.Under severe cold treatment,in addition to Min pig gastrocnemius was still declined,the rest were all significantly increased.The increased ratio of soleus muscle was maximal.Accordingly,it was believed that under mild cold treatment,the metabolism style of Min pig muscle tissue was different from large white pig; under severe cold treatment,the soleus muscle mainly dominated by red muscle was the main muscle of shivering thermogenesis.It was speculated that low temperature could induce the transformation of muscle fiber type.
参考文献/References:
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备注/Memo
收稿日期:2017-03-18基金项目:“十二五”农村领域国家科技计划资助项目(2015BAD03B02-5);国家生猪产业体系岗位科学家资助项目(CARS-36);黑龙江省科研机构创新能力提升专项资助项目(YC2016D001)