气候变化领域集成服务门户(CCPortal): Variation of High and Low Nucleic Acid-Content Bacteria in Tibetan Ice Cores and Their Relationship to Black Carbon

CCPortal

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-CYTOMETRY GLACIAL ICE DNA-CONTENT BACTERIOPLANKTON ABUNDANCE MONSOON PLATEAU WATERS SIZE MICROORGANISMS
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).