中国江西省原住民的肠道微生物多样性
Jiawei Li1, Yuping Li1, Huiyuan Xiao1
1College of Life Science, Jiangxi Science and Technology Normal University, Nanchang, China.
Poultry science
|November 28, 2023
概括
这项研究揭示了江西基因组与其肠道微生物群之间的联系. 了解这种联系有助于保护原住民的遗传资源.
科学领域:
- 动物基因组学 动物基因组学
- 微生物组研究 微生物组研究
- 禽畜科学 禽畜科学 禽畜科学
背景情况:
- 肠道微生物群在宿主生理学和共生关系中起着至关重要的作用.
- 肠道菌群对江西原住民的具体影响尚不清楚.
- 研究宿主-微生物相互作用对于了解动物健康和遗传学至关重要.
研究的目的:
- 探索江西当地的肠道微生物群和宿主基因组之间的关联.
- 确定影响肠微生物组成的遗传区域和候选基因.
- 了解江西的肠道微生物的多样性及其基因组基础.
主要方法:
- 采用16S rRNA测序来分析肠道微生物社区结构.
- 进行全基因组关联研究 (GWAS),以确定宿主遗传关联.
- 进行了统计分析,以将微生物丰富度与基因组变异相关联.
主要成果:
- 的品种和性别显著影响肠道微生物群的组成.
- 在14个基因组区域的28个单核酸多态 (SNP) 与特定的微生物属有关 (例如,Clostridium,Enterococcus,Gallibacterium,Turicibacter,Rikenellaceae_RC9_gut_group).
- 确定了17个候选基因,突出显示了宿主基因组与肠道微生物组之间的显著关联.
结论:
- 宿主基因组与江西的肠道微生物群之间存在明显的关联.
- 这项研究为肠微生物群落的遗传基础提供了新的见解.
- 这些发现为保护中国原住民的遗传资源提供了新的视角.
相关概念视频
01:23Anatomy of the Intestines
Although digestion of proteins, carbohydrates, and lipids may begin in the stomach, it is completed in the intestine. The absorption of nutrients, water, and electrolytes from food and drink also occurs in the intestine. The intestines can be divided into two structurally distinct organs—the small and large intestines.
Small Intestines
The small intestine is an ~7 meter-long tube with an inner diameter of just 2.5 cm. Since most nutrients are absorbed here, the inner lining of the small...
Small Intestines
The small intestine is an ~7 meter-long tube with an inner diameter of just 2.5 cm. Since most nutrients are absorbed here, the inner lining of the small...
01:29Bacterial Flora of the Large Intestine
The gut microbiome is formed by a vast and diverse community of bacteria that colonizes our large intestine. These bacteria start residing in the gut from birth and continue diversifying throughout life, influenced by factors such as diet, lifestyle, and stress. The gut bacterial community also includes bacteria from food and those that enter the colon through the anus.
The normal gut flora of the colon plays a critical role in generating essential vitamins such as vitamins K, B5, and B7.
The normal gut flora of the colon plays a critical role in generating essential vitamins such as vitamins K, B5, and B7.
01:30Development of Human Microbiota
The human microbiota begins developing at birth and undergoes continual change as we age. Infancy marks a critical period of microbial sensitivity, offering a “window of opportunity” during which beneficial microbes help mature the immune system. By age three, children typically develop a more stable and diverse microbial community. Newborns acquire microbes from their immediate environment; vaginal delivery favors maternal vaginal microbes, while cesarean births favor microbes from the skin...
01:27Microbiota of the Stomach and Small Intestine
The human gastrointestinal (GI) tract is characterized by distinct physicochemical conditions that shape its microbial communities. Among these, the stomach presents a particularly challenging environment for microbial colonization due to its highly acidic pH, ranging from 1 to 3. This extreme acidity effectively limits microbial density. However, certain acid-tolerant microorganisms are capable of surviving in this niche. Notably, Helicobacter pylori can colonize the gastric mucosa,...
01:27Microbiota of the Large Intestine
The large intestine hosts the most densely populated microbial ecosystem in the human body. This complex community primarily consists of anaerobic bacteria, with Bacillota (formerly Firmicutes) and Bacteroidota (formerly Bacteroidetes) as the predominant groups. The distribution of these microbes varies along different sections of the large intestine, influenced by local environmental factors such as oxygen availability and nutrient composition.The cecum, located at the beginning of the large...