干旱区生态环境知识资源中心(Arid): A long-term atmospheric baseline for intercontinental exchange of airborne pathogens

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DOI	10.1016/j.envint.2021.106916
	A long-term atmospheric baseline for intercontinental exchange of airborne pathogens
	Triado-Margarit, Xavier; Caliz, Joan; Casamayor, Emilio O.
通讯作者	Casamayor, EO (corresponding author), CEAB CSIC, Acces Cala St Francesc 14, E-17300 Blanes, Spain.
来源期刊	ENVIRONMENT INTERNATIONAL
ISSN	0160-4120
EISSN	1873-6750
出版年	2022
卷号	158
英文摘要	The atmosphere is a potential pathway for global-scale and long-range dispersal of viable microorganisms, promoting biological interconnections among the total environment. We aimed to provide relevant baseline information for long-range long-term intercontinental exchange of potentially infectious airborne microorganisms of major interest in environmental and health-related disciplines. We used an interannual survey (7-y) with wet depositions fortnightly collected above the boundary layer (free troposphere) at a remote high-elevation LTER (Long-Term-Ecological-Research) site, analyzed by 16S and 18S rRNA genes, and compared to a database of 475 well-known pathogens. We applied a conservative approach on close relatives of pathogenic species (>98% identity) standing their theoretical upper limit for atmospheric baseline relative abundances. We identified c. 2-3% of the total airborne microbiota as potential pathogens. Their most frequent environmental origins were soil, aquatic, and anthropogenic sources. Phytopathogens (mostly fungi) were the potential infectious agents most widely present. We uncovered consistent interannual dynamics with taxa foreseeable over time (i.e., predictable seasonal behavior) and under recurrent environmental scenarios (e.g., Saharan dust intrusions), respectively, being highly valuable microbial forensic environmental indicators. Up to 8 bacterial and 21 fungal genera consistently showed temporal abundances and recurrences unevenly distributed. Incidence of allergenic fungi was lower in summer, and significantly higher in spring. Close relatives to Coccidioides posadasii consistently showed higher signals (i.e., high specificity and high fidelity) in winter, whereas Cryptococcus neoformans had a significant signal in spring. Along Saharan dust intrusions, the bacterial phytopathogens Acidovorax avenae and Agrobacterium tumefaciens and the fungal phytopathogens Pseudozyma hubeiensis and Peniophora sp. consistently showed higher signals. Potential human pathogens showed low proportion, being mostly fungal allergens. Microorganisms related to obligated human, amphibian and fish pathogens were commonly found in winter. More studies in remote field sites above the boundary layer will unveil whether or not a similar trend is found globally.
英文关键词	Airborne pathogen Bioaerosol Long-range transport Environmental health Environmental forensics signature
类型	Article
语种	英语
开放获取类型	Green Published, hybrid
收录类别	SCI-E
WOS记录号	WOS:000709996200003
WOS关键词	COCCIDIOIDES-IMMITIS ; BACTERIAL PATHOGENS ; DESERT DUST ; ENVIRONMENT ; AFRICA ; MICROORGANISMS ; TROPOSPHERE ; DISPERSAL ; TRANSPORT ; POSADASII
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/374478
作者单位	Spanish Council Res CEAB CSIC, Ctr Adv Studies Blanes, Integrat Freshwater Ecol Grp, E-17300 Blanes, Spain; Spanish Council Res CEAB CSIC, Ctr Adv Studies Blanes, LTER AT Res Grp, E-17300 Blanes, Spain
推荐引用方式 GB/T 7714	Triado-Margarit, Xavier,Caliz, Joan,Casamayor, Emilio O.. A long-term atmospheric baseline for intercontinental exchange of airborne pathogens[J],2022,158.
APA	Triado-Margarit, Xavier,Caliz, Joan,&Casamayor, Emilio O..(2022).A long-term atmospheric baseline for intercontinental exchange of airborne pathogens.ENVIRONMENT INTERNATIONAL,158.
MLA	Triado-Margarit, Xavier,et al."A long-term atmospheric baseline for intercontinental exchange of airborne pathogens".ENVIRONMENT INTERNATIONAL 158(2022).