Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1089/ast.2009.0430 |
Damage Escape and Repair in Dried Chroococcidiopsis spp. from Hot and Cold Deserts Exposed to Simulated Space and Martian Conditions | |
Billi, Daniela1; Viaggiu, Emanuela1; Cockell, Charles S.2; Rabbow, Elke3; Horneck, Gerda3; Onofri, Silvano4 | |
通讯作者 | Billi, Daniela |
来源期刊 | ASTROBIOLOGY
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ISSN | 1531-1074 |
EISSN | 1557-8070 |
出版年 | 2011 |
卷号 | 11期号:1页码:65-73 |
英文摘要 | The cyanobacterium Chroococcidiopsis, overlain by 3mm of Antarctic sandstone, was exposed as dried multi-layers to simulated space and martian conditions. Ground-based experiments were conducted in the context of Lichens and Fungi Experiments (EXPOSE-E mission, European Space Agency), which were performed to evaluate, after 1.5 years on the International Space Station, the survival of cyanobacteria (Chroococcidiopsis), lichens, and fungi colonized on Antarctic rock. The survival potential and the role played by protection and repair mechanisms in the response of dried Chroococcidiopsis cells to ground-based experiments were both investigated. Different methods were employed, including evaluation of the colony-forming ability, single-cell analysis of subcellular integrities based on membrane integrity molecular and redox probes, evaluation of the photosynthetic pigment autofluorescence, and assessment of the genomic DNA integrity with a PCR-based assay. Desiccation survivors of strain CCMEE 123 (coastal desert, Chile) were better suited than CCMEE 134 (Beacon Valley, Antarctica) to withstand cellular damage imposed by simulated space and martian conditions. Exposed dried cells of strain CCMEE 123 formed colonies, maintained subcellular integrities, and, depending on the exposure conditions, also escaped DNA damage or repaired the induced damage upon rewetting. |
英文关键词 | Astrobiology Endolithic cyanobacteria Chroococcidiopsis Ground-based experiments |
类型 | Article |
语种 | 英语 |
国家 | Italy ; England ; Germany |
收录类别 | SCI-E |
WOS记录号 | WOS:000287689200007 |
WOS关键词 | CYANOBACTERIUM CHROOCOCCIDIOPSIS ; BACILLUS-SUBTILIS ; DESICCATION ; LIFE ; MICROORGANISMS ; TARDIGRADES ; ENVIRONMENT ; RESISTANCE ; TOLERANCE ; VIABILITY |
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/2XILL650/167188 |
作者单位 | 1.Univ Roma Tor Vergata, Dipartimento Biol, I-00133 Rome, Italy; 2.Open Univ, Milton Keynes MK7 6AA, Bucks, England; 3.DLR, Inst Aerosp Med, Cologne, Germany; 4.Univ Tuscia, Dipartimento Ecol & Sviluppo Econ Sostenibile, Viterbo, Italy |
推荐引用方式 GB/T 7714 | Billi, Daniela,Viaggiu, Emanuela,Cockell, Charles S.,et al. Damage Escape and Repair in Dried Chroococcidiopsis spp. from Hot and Cold Deserts Exposed to Simulated Space and Martian Conditions[J],2011,11(1):65-73. |
APA | Billi, Daniela,Viaggiu, Emanuela,Cockell, Charles S.,Rabbow, Elke,Horneck, Gerda,&Onofri, Silvano.(2011).Damage Escape and Repair in Dried Chroococcidiopsis spp. from Hot and Cold Deserts Exposed to Simulated Space and Martian Conditions.ASTROBIOLOGY,11(1),65-73. |
MLA | Billi, Daniela,et al."Damage Escape and Repair in Dried Chroococcidiopsis spp. from Hot and Cold Deserts Exposed to Simulated Space and Martian Conditions".ASTROBIOLOGY 11.1(2011):65-73. |
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