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| Shifts in soil bacterial community and their response mechanism during freeze-thaw period in Bayinbuluk alpine wetland |
| Received:August 28, 2019 |
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| KeyWord:freeze-thaw period;bacterial community;high-throughput sequencing;function prediction |
| Author Name | Affiliation | E-mail | | CHEN Mo | College of Grassland and Environment Sciences, Xinjiang Agricultural University, Urumqi 830052, China | | | ZHU Xin-ping | College of Grassland and Environment Sciences, Xinjiang Agricultural University, Urumqi 830052, China | | | JIANG Jing-bai-lun | College of Grassland and Environment Sciences, Xinjiang Agricultural University, Urumqi 830052, China | | | Maidinuer·ABULAIZI | College of Grassland and Environment Sciences, Xinjiang Agricultural University, Urumqi 830052, China | | | SUN Tao | College of Grassland and Environment Sciences, Xinjiang Agricultural University, Urumqi 830052, China | | | JIA Hong-tao | College of Grassland and Environment Sciences, Xinjiang Agricultural University, Urumqi 830052, China
Key Laboratory of Soil and Plant Ecological Process in Xinjiang, Urumqi 830052, China | jht@xjau.edu.cn |
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| Abstract: |
| To explore the response mechanism of a soil bacterial community to environmental changes during a freeze-thaw period, variations in the soil bacterial community structure and function during this period in the Bayinbuluk alpine wetland were studied using highthroughput sequencing technology. Results showed that:The species diversity of the bacterial community was significantly reduced during the freeze period; The ecological adaptability of the bacterial community structure changed because of the influences of changes in the soil temperature, soil humidity, snow depth(explained 84.74% of the changes of bacterial community structure), soil total carbon, soil total nitrogen, and carbon-nitrogen ratio(explained 73.91% of the changes of bacterial community structure); The functional roles of soil bacterial communities were significantly different during the three periods. These differences mainly focused on the differences in three functional genes, namely "metabolism" "signal transduction" and "survival". The structure and function of the soil bacterial community in the alpine wetland changed during the freeze-thaw period, which enhanced the stress resistance of the community and thus, evolved a relatively complete cold-resistant mechanism to adapt to the freeze-thaw pattern changes. |
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