Survival of lichens on the ISS-II: ultrastructural and morphological changes of Circinaria gyrosa after space and Mars-like conditions
Lichens are extremophile organisms, they live in the most extreme conditions, colonizing areas with extreme temperatures, high aridity condition and high UV-radiation. Therefore they have been by far the most successful settlers of the Antarctic continent. Also in the laboratory they survive tempera...
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ftdlr:oai:elib.dlr.de:114343 2024-05-19T07:32:31+00:00 Survival of lichens on the ISS-II: ultrastructural and morphological changes of Circinaria gyrosa after space and Mars-like conditions de la Torre Noetzel, R. Miller, B. Cubero, A.Z. Sancho, L. G. Jordão, L. Rabbow, Elke Meessen, J. de Vera, J. P. 2017 application/pdf https://elib.dlr.de/114343/ https://elib.dlr.de/114343/1/ME-SBA-2017-delaTorre-EANA-2017.pdf de ger https://elib.dlr.de/114343/1/ME-SBA-2017-delaTorre-EANA-2017.pdf de la Torre Noetzel, R. und Miller, B. und Cubero, A.Z. und Sancho, L. G. und Jordão, L. und Rabbow, Elke und Meessen, J. und de Vera, J. P. (2017) Survival of lichens on the ISS-II: ultrastructural and morphological changes of Circinaria gyrosa after space and Mars-like conditions. EANA 2017, 2017-08-14 - 2017-08-17, Aarhus, Denmark. Strahlenbiologie Leitungsbereich PF Konferenzbeitrag PeerReviewed 2017 ftdlr 2024-04-25T00:42:56Z Lichens are extremophile organisms, they live in the most extreme conditions, colonizing areas with extreme temperatures, high aridity condition and high UV-radiation. Therefore they have been by far the most successful settlers of the Antarctic continent. Also in the laboratory they survive temperatures near the absolute cero and absolute dryness without difficulty. Lichen species have distinct likes and dislikes when it come to the physico-chemical properties of the substrate while the group of lichens as a whole is pretty adaptable to vari- ous substrata (from rocks to glass). The main feature/aspect of their evolutionary/ecological success of this capacity is the close symbiotic relation between two organisms, a fungi and a cyanobacteria or an algae [1], allowing them to survive at real space [2] and at Mars con- ditions [3, 4, 5], such as that on the ISS. At the exposure platform EXPOSE-R2 on ISS (2014-2016), samples of the lichen species Circinaria gyrosa belonging to the BIOMEX ex- periment (Biology and Mars Experiment, ESA) [5], were exposed during 18 months to real space and to a Mars simulated environment to study Mars habitability and resistance to real space conditions. Also the identification of biomarkers was done to include them as reference for future space missions to Mars (Exo Mars). After the return of the mission at June 2016, the first preliminary analysis were performed, showing the metabolic activity a quick and complete recovery of the dark space control samples exposed to space vacuum and Mars-like atmosphere. In contrast, the samples directly exposed to space radiation showed slow recovery in reference to their observed original activity. Electron and fluores- cence microscopy techniques also revealed that the viability of C. gyrosa exposed to space conditions decreased in comparison to those exposed to Mars-like environment. Moreover, differences were observed between samples positioned at level 1 and level 2. In general, TEM and FESEM observations showed that samples at level 2 (basal ... Conference Object Antarc* Antarctic German Aerospace Center: elib - DLR electronic library |
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Open Polar |
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German Aerospace Center: elib - DLR electronic library |
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ftdlr |
language |
German |
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Strahlenbiologie Leitungsbereich PF |
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Strahlenbiologie Leitungsbereich PF de la Torre Noetzel, R. Miller, B. Cubero, A.Z. Sancho, L. G. Jordão, L. Rabbow, Elke Meessen, J. de Vera, J. P. Survival of lichens on the ISS-II: ultrastructural and morphological changes of Circinaria gyrosa after space and Mars-like conditions |
topic_facet |
Strahlenbiologie Leitungsbereich PF |
description |
Lichens are extremophile organisms, they live in the most extreme conditions, colonizing areas with extreme temperatures, high aridity condition and high UV-radiation. Therefore they have been by far the most successful settlers of the Antarctic continent. Also in the laboratory they survive temperatures near the absolute cero and absolute dryness without difficulty. Lichen species have distinct likes and dislikes when it come to the physico-chemical properties of the substrate while the group of lichens as a whole is pretty adaptable to vari- ous substrata (from rocks to glass). The main feature/aspect of their evolutionary/ecological success of this capacity is the close symbiotic relation between two organisms, a fungi and a cyanobacteria or an algae [1], allowing them to survive at real space [2] and at Mars con- ditions [3, 4, 5], such as that on the ISS. At the exposure platform EXPOSE-R2 on ISS (2014-2016), samples of the lichen species Circinaria gyrosa belonging to the BIOMEX ex- periment (Biology and Mars Experiment, ESA) [5], were exposed during 18 months to real space and to a Mars simulated environment to study Mars habitability and resistance to real space conditions. Also the identification of biomarkers was done to include them as reference for future space missions to Mars (Exo Mars). After the return of the mission at June 2016, the first preliminary analysis were performed, showing the metabolic activity a quick and complete recovery of the dark space control samples exposed to space vacuum and Mars-like atmosphere. In contrast, the samples directly exposed to space radiation showed slow recovery in reference to their observed original activity. Electron and fluores- cence microscopy techniques also revealed that the viability of C. gyrosa exposed to space conditions decreased in comparison to those exposed to Mars-like environment. Moreover, differences were observed between samples positioned at level 1 and level 2. In general, TEM and FESEM observations showed that samples at level 2 (basal ... |
format |
Conference Object |
author |
de la Torre Noetzel, R. Miller, B. Cubero, A.Z. Sancho, L. G. Jordão, L. Rabbow, Elke Meessen, J. de Vera, J. P. |
author_facet |
de la Torre Noetzel, R. Miller, B. Cubero, A.Z. Sancho, L. G. Jordão, L. Rabbow, Elke Meessen, J. de Vera, J. P. |
author_sort |
de la Torre Noetzel, R. |
title |
Survival of lichens on the ISS-II: ultrastructural and morphological changes of Circinaria gyrosa after space and Mars-like conditions |
title_short |
Survival of lichens on the ISS-II: ultrastructural and morphological changes of Circinaria gyrosa after space and Mars-like conditions |
title_full |
Survival of lichens on the ISS-II: ultrastructural and morphological changes of Circinaria gyrosa after space and Mars-like conditions |
title_fullStr |
Survival of lichens on the ISS-II: ultrastructural and morphological changes of Circinaria gyrosa after space and Mars-like conditions |
title_full_unstemmed |
Survival of lichens on the ISS-II: ultrastructural and morphological changes of Circinaria gyrosa after space and Mars-like conditions |
title_sort |
survival of lichens on the iss-ii: ultrastructural and morphological changes of circinaria gyrosa after space and mars-like conditions |
publishDate |
2017 |
url |
https://elib.dlr.de/114343/ https://elib.dlr.de/114343/1/ME-SBA-2017-delaTorre-EANA-2017.pdf |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
https://elib.dlr.de/114343/1/ME-SBA-2017-delaTorre-EANA-2017.pdf de la Torre Noetzel, R. und Miller, B. und Cubero, A.Z. und Sancho, L. G. und Jordão, L. und Rabbow, Elke und Meessen, J. und de Vera, J. P. (2017) Survival of lichens on the ISS-II: ultrastructural and morphological changes of Circinaria gyrosa after space and Mars-like conditions. EANA 2017, 2017-08-14 - 2017-08-17, Aarhus, Denmark. |
_version_ |
1799470602857218048 |