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DOI | 10.3389/fmicb.2022.844432 |
Variation of High and Low Nucleic Acid-Content Bacteria in Tibetan Ice Cores and Their Relationship to Black Carbon | |
Mao, Guannan; Ji, Mukan; Xu, Baiqing; Liu, Yongqin; Jiao, Nianzhi | |
通讯作者 | Liu, YQ (通讯作者) |
发表日期 | 2022 |
EISSN | 1664-302X |
卷号 | 13 |
英文摘要 | Nutrient enrichment caused by black carbon (BC) is a major ecological crisis in glacial ecosystems. The microbiological effects of BC were assessed in this study by using fluorescent fingerprinting assay based on flow cytometry (FCM) of bacterial communities with low (LNA) and high (HNA) nucleic acid-content bacteria. Here, we investigated a high-resolution temporal variation of bacterial abundance and LNA/HNA ratio in Tibetan ice cores. Our results revealed that bacterial abundance was proportional to the atmospheric BC on the glaciers. The shift of LNA functional groups to HNA functional groups in glaciers suggested BC emissions increased the proportion of highly active cells. In addition, distinct number of LNA and HNA functional groups was identified between the monsoon and non-monsoon seasons. Westerly winds with high amounts of BC accounted for high ratio of HNA functional groups during the non-monsoon season. In comparison, high moisture during the monsoon season decreased atmospheric BC loading, which increases the ratio of LNA functional groups. Correlations between BC and functional groups were very strong, showing that two functional groups may serve as early-warning indicators of microbiological effects of BC at low trophic level. Our approach provides a potential early-warning framework to study the influences of atmospheric BC on the glaciological community. |
关键词 | FLOW-CYTOMETRYGLACIAL ICEDNA-CONTENTBACTERIOPLANKTONABUNDANCEMONSOONPLATEAUWATERSSIZEMICROORGANISMS |
英文关键词 | black carbon; bacteria functional groups; early-warning indicators; Tibetan Plateau; temporal variation; ice cores |
语种 | 英语 |
WOS研究方向 | Microbiology |
WOS类目 | Microbiology |
WOS记录号 | WOS:000761694400001 |
来源期刊 | FRONTIERS IN MICROBIOLOGY |
来源机构 | 中国科学院青藏高原研究所 |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/260651 |
推荐引用方式 GB/T 7714 | Mao, Guannan,Ji, Mukan,Xu, Baiqing,et al. Variation of High and Low Nucleic Acid-Content Bacteria in Tibetan Ice Cores and Their Relationship to Black Carbon[J]. 中国科学院青藏高原研究所,2022,13. |
APA | Mao, Guannan,Ji, Mukan,Xu, Baiqing,Liu, Yongqin,&Jiao, Nianzhi.(2022).Variation of High and Low Nucleic Acid-Content Bacteria in Tibetan Ice Cores and Their Relationship to Black Carbon.FRONTIERS IN MICROBIOLOGY,13. |
MLA | Mao, Guannan,et al."Variation of High and Low Nucleic Acid-Content Bacteria in Tibetan Ice Cores and Their Relationship to Black Carbon".FRONTIERS IN MICROBIOLOGY 13(2022). |
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