气候变化领域集成服务门户(CCPortal): High levels of primary biogenic organic aerosols are driven by only a few plant-associated microbial taxa

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DOI	10.5194/acp-20-5609-2020
	High levels of primary biogenic organic aerosols are driven by only a few plant-associated microbial taxa
	Samaké A.; Bonin A.; Jaffrezo J.-L.; Taberlet P.; Weber S.; Uzu G.; Jacob V.; Conil S.; Martins J.M.F.
发表日期	2020
ISSN	16807316
起始页码	5609
结束页码	5628
卷号	20 期号:9
英文摘要	pPrimary biogenic organic aerosols (PBOAs) represent a major fraction of coarse organic matter (OM) in air. Despite their implication in many atmospheric processes and human health problems, we surprisingly know little about PBOA characteristics (i.e., composition, dominant sources, and contribution to airborne particles). In addition, specific primary sugar compounds (SCs) are generally used as markers of PBOAs associated with bacteria and fungi, but our knowledge of microbial communities associated with atmospheric particulate matter (PM) remains incomplete. This work aimed at providing a comprehensive understanding of the microbial fingerprints associated with SCs in PMspan classCombining double low line"inline-formula"10/span (particles smaller than 10 span classCombining double low line"inline-formula"μ/spanm) and their main sources in the surrounding environment (soils and vegetation). An intensive study was conducted on PMspan classCombining double low line"inline-formula"10/span collected at a rural background site located in an agricultural area in France. We combined high-throughput sequencing of bacteria and fungi with detailed physicochemical characterizations of PMspan classCombining double low line"inline-formula"10/span, soil, and plant samples and monitored meteorological and agricultural activities throughout the sampling period. Results show that in summer SCs in PMspan classCombining double low line"inline-formula"10/span are a major contributor of OM in air, representing 0.8 % to 13.5 % of OM mass. SC concentrations are clearly determined by the abundance of only a few specific airborne fungal and bacterial taxa. The temporal fluctuations in the abundance of only four predominant fungal genera, namely iCladosporium/i, iAlternaria/i, iSporobolomyces/i, and iDioszegia/i, reflect the temporal dynamics in SC concentrations. Among bacterial taxa, the abundance of only iMassilia/i, iPseudomonas/i, iFrigoribacterium/i, and iSphingomonas/i is positively correlated with SC species. These microbes are significantly enhanced in leaf over soil samples. Interestingly, the overall community structure of bacteria and fungi are similar within PMspan classCombining double low line"inline-formula"10/span and leaf samples and significantly distinct between PMspan classCombining double low line"inline-formula"10/span and soil samples, indicating that surrounding vegetation is the major source of SC-associated microbial taxa in PMspan classCombining double low line"inline-formula"10/span in this rural area of France. © Author(s) 2020.
关键词	aerosol bacterium biogenic emission community structure concentration (composition)fungus particulate organic matter sugar vegetation France Bacteria (microorganisms)Fungi
语种	英语
来源机构	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/132039
推荐引用方式 GB/T 7714	Samaké A.,Bonin A.,Jaffrezo J.-L.,et al. High levels of primary biogenic organic aerosols are driven by only a few plant-associated microbial taxa[J]. Atmospheric Chemistry and Physics,2020,20(9).
APA	Samaké A..,Bonin A..,Jaffrezo J.-L..,Taberlet P..,Weber S..,...&Martins J.M.F..(2020).High levels of primary biogenic organic aerosols are driven by only a few plant-associated microbial taxa.,20(9).
MLA	Samaké A.,et al."High levels of primary biogenic organic aerosols are driven by only a few plant-associated microbial taxa".20.9(2020).