干旱区生态环境知识资源中心(Arid): Aggregated Cell Masses Provide Protection against Space Extremes and a Microhabitat for Hitchhiking Co-Inhabitants

Arid

DOI	10.1089/ast.2018.1924
	Aggregated Cell Masses Provide Protection against Space Extremes and a Microhabitat for Hitchhiking Co-Inhabitants
	Wadsworth, Jennifer 1; Rettberg, Petra 2; Cockell, Charles S.1
通讯作者	Wadsworth, Jennifer
来源期刊	ASTROBIOLOGY
ISSN	1531-1074
EISSN	1557-8070
出版年	2019
卷号	19 期号:8 页码:995-1007
英文摘要	The European Space Agency's EXPOSE facility, located on the outside of the International Space Station, was used to investigate the survival of cell aggregates of a cyanobacterium, Gloeocapsa sp., in space and simulated martian conditions for 531 days in low Earth orbit as part of the Biofilm Organisms Surfing Space (BOSS) experiments. Postflight analysis showed that the cell aggregates of the organism conferred protection against space conditions compared to planktonic cells. These cell aggregates, which consisted of groups of metabolically inactive cells that do not form structured layered biofilms, demonstrated that disordered primitive aggregates of sheathed cells can provide protection against environmental stress such as UV radiation. Furthermore, the experiment demonstrated that the cyanobacterial cell aggregates provided a microhabitat for a smaller bacterial co-cultured species that also survived in space. This observation shows that viable cells can hitchhike through space within the confines of larger protecting cells or cell aggregates, with implications for planetary protection, human health, and other space microbiology applications.
英文关键词	Space radiation Biofilms Radiation protection Cyanobacteria Mars EXPOSE
类型	Article
语种	英语
国家	Scotland ; Germany
收录类别	SCI-E
WOS记录号	WOS:000471638000001
WOS关键词	DESERT CYANOBACTERIUM CHROOCOCCIDIOPSIS ; EXPOSE-R2 MISSION ; SIMULATED SPACE ; RADIATION ; BIOFILMS ; DESICCATION ; RESISTANCE ; DOSIMETRY ; EXPOSURE ; ISS
WOS类目	Astronomy & Astrophysics ; Biology ; Geosciences, Multidisciplinary
WOS研究方向	Astronomy & Astrophysics ; Life Sciences & Biomedicine - Other Topics ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/214421
作者单位	1.Univ Edinburgh, Sch Phys & Astron, UK Ctr Astrobiol, Edinburgh, Midlothian, Scotland; 2.DLR, Inst Aerosp Med, Cologne, Germany
推荐引用方式 GB/T 7714	Wadsworth, Jennifer,Rettberg, Petra,Cockell, Charles S.. Aggregated Cell Masses Provide Protection against Space Extremes and a Microhabitat for Hitchhiking Co-Inhabitants[J],2019,19(8):995-1007.
APA	Wadsworth, Jennifer,Rettberg, Petra,&Cockell, Charles S..(2019).Aggregated Cell Masses Provide Protection against Space Extremes and a Microhabitat for Hitchhiking Co-Inhabitants.ASTROBIOLOGY,19(8),995-1007.
MLA	Wadsworth, Jennifer,et al."Aggregated Cell Masses Provide Protection against Space Extremes and a Microhabitat for Hitchhiking Co-Inhabitants".ASTROBIOLOGY 19.8(2019):995-1007.