期刊
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
卷 106, 期 19-20, 页码 6701-6711出版社
SPRINGER
DOI: 10.1007/s00253-022-12171-y
关键词
High-altitude environment; Gut microbiota; Highland bird; Microbiota diversity; Microbiota function; Adaptation
资金
- Fundamental Research Fund for the Central Non-profit Research of Chinese Academy of Forestry [CAFYBB2020ZA004-4]
- Fundamental Research Funds for the Central Non-profit Research Institution of CAF [CAFYBB2018QB010]
By comparing the gut microbiota of crane species, researchers found that black-necked crane developed unique bacteria to adapt to high-altitude environments. There are significant differences in microbial composition and function between low- and high-altitude black-necked cranes.
Highland birds evolve multiple adaptive abilities to cope with the harsh environments; however, how they adapt to the high-altitude habitats via the gut microbiota remains understudied. Here we integrated evidences from comparative analysis of gut microbiota to explore the adaptive mechanism of black-necked crane, a typical highland bird in the Qinghai-Tibet Plateau. Firstly, the gut microbiota diversity and function was compared among seven crane species (one high-altitude species and six low-altitude species), and then among three populations of contrasting altitudes for the black-necked crane. Microbiota community diversity in black-necked crane was significantly lower than its low-altitude relatives, but higher microbiota functional diversity was observed in black-necked crane, suggesting that unique bacteria are developed and acquired due to the selection pressure of high-altitude environments. The functional microbial genes differed significantly between the low- and high-altitude black-necked cranes, indicating that altitude significantly impacted microbial communities' composition and structure. Adaptive changes in microbiota diversity and function are observed in response to high-altitude environments. These findings provide us a new insight into the adaptation mechanism to the high-altitude environment for birds via the gut microbiota.
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