Diversity and Biogeography of Human Oral Saliva Microbial Communities Revealed by the Earth Microbiome Project

被引:7
|
作者
Wang, Jinlan [1 ]
Feng, Jianqing [2 ]
Zhu, Yongbao [1 ]
Li, Dandan [3 ]
Wang, Jianing [3 ]
Chi, Weiwei [1 ]
机构
[1] Natl Adm Hlth Data, Jinan, Peoples R China
[2] 96608 Army Hosp Chinese Peoples Liberat Army, Hanzhong, Peoples R China
[3] Shandong Univ, Inst Microbial Technol, State Key Lab Microbial Technol, Qingdao, Peoples R China
基金
中国博士后科学基金;
关键词
oral cavity; saliva; microbiome; earth microbiome project; microbial diversity; environmental microbiome; BODY HABITATS; ACQUISITION;
D O I
10.3389/fmicb.2022.931065
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
The oral cavity is an important window for microbial communication between the environment and the human body. The oral microbiome plays an important role in human health. However, compared to the gut microbiome, the oral microbiome has been poorly explored. Here, we analyzed 404 datasets from human oral saliva samples published by the Earth Microbiome Project (EMP) and compared them with 815 samples from the human gut, nose/pharynx, and skin. The diversity of the human saliva microbiome varied significantly among individuals, and the community compositions were complex and diverse. The saliva microbiome showed the lowest species diversity among the four environment types. Human oral habitats shared a small core bacterial community containing only 14 operational taxonomic units (OTUs) under 5 phyla, which occupied over 75% of the sequence abundance. For the four habitats, the core taxa of the saliva microbiome had the greatest impact on saliva habitats than other habitats and were mostly unique. In addition, the saliva microbiome showed significant differences in the populations of different regions, which may be determined by the living environment and lifestyle/dietary habits. Finally, the correlation analysis showed high similarity between the saliva microbiome and the microbiomes of Aerosol (non-saline) and Surface (non-saline), i.e., two environment types closely related to human, suggesting that contact and shared environment being the driving factors of microbial transmission. Together, these findings expand our understanding of human oral diversity and biogeography.
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页数:9
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