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《Chinese Science Bulletin》 2014-22
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Ecological analysis of human milk microbiome

GUAN Qiong;MA ZhanShan;Computational Biology and Medical Ecology Laboratory, State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology,Chinese Academy of Sciences;College of Life Science, Anhui University;  
Human milk is considered the most ideal source of nutrition for infants and it plays a critical role in the evolution and civilizations of humans. Unlike our intuitive perception, human milk contains a large number of bacterial species, including some opportunistic pathogens of humans. This phenomenon comes as no surprise to scientists and physicians. Indeed, the existence of milk microbiome is considered to be the result of co-evolutionary and co-adaptive interactions between the microbiome and human host. Furthermore, the dynamic balance in human milk microbiome ecosystem could be fundamental for suppressing the opportunistic pathogens in the breast milk. Nevertheless, there has been little study on milk microbiome from ecological perspectives. In this article, the neutral theory and Taylor's power law from macro ecology were applied to investigate the mechanisms of community assembly and species diversity maintenance, as well as the population and species abundance distribution patterns in human milk bacterial communities. Our study reveals the non-random and heterogeneous nature of both population abundance and species abundance distributions in milk bacterial communities. Furthermore, all milk bacterial communities failed to fit to the neutral community model, indicating the possibility of niche differentiation and the presence of dominant species.
【Fund】: 国家自然科学基金(61175071);; 云南省高端科技人才项目;; 云南省海外高层次人才项目;; 中国科学院昆明动物研究所“计算进化―自然进化”协同研究省创新团队资助
【CateGory Index】: R174.4
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