干旱区生态环境知识资源中心(Arid): Carotenoid Raman Signatures are Better Preserved in Dried Cells of the Desert Cyanobacterium Chroococcidiopsis than in Hydrated Counterparts after High-Dose Gamma Irradiation

Arid

DOI	10.3390/life10060083
	Carotenoid Raman Signatures are Better Preserved in Dried Cells of the Desert Cyanobacterium Chroococcidiopsis than in Hydrated Counterparts after High-Dose Gamma Irradiation
	Baque, Mickael 1; Napoli, Alessandro 2; Claudia, Fagliarone 2; Moeller, Ralf 3; de Vera, Jean-Pierre 1; Billi, Daniela 2
通讯作者	Billi, Daniela
来源期刊	LIFE-BASEL
EISSN	2075-1729
出版年	2020
卷号	10 期号:6
英文摘要	Carotenoids are promising targets in our quest to search for life on Mars due to their biogenic origin and easy detection by Raman spectroscopy, especially with a 532 nm excitation thanks to resonance effects. Ionizing radiations reaching the surface and subsurface of Mars are however detrimental for the long-term preservation of biomolecules. We show here that desiccation can protect carotenoid Raman signatures in the desert cyanobacteriumChroococcidiopsissp. CCMEE 029 even after high-dose gamma irradiation. Indeed, while the height of the carotenoids Raman peaks was considerably reduced in hydrated cells exposed to gamma irradiation, it remained stable in dried cells irradiated with the highest tested dose of 113 kGy of gamma rays, losing only 15-20% of its non-irradiated intensity. Interestingly, even though the carotenoid Raman signal of hydrated cells lost 90% of its non-irradiated intensity, it was still detectable after exposure to 113 kGy of gamma rays. These results add insights into the preservation potential and detectability limit of carotenoid-like molecules on Mars over a prolonged period of time and are crucial in supporting future missions carrying Raman spectrometers to Mars' surface.
英文关键词	biosignatures extremophiles ionizing radiation Raman spectroscopy cyanobacteria Mars exploration
类型	Article
语种	英语
国家	Germany ; Italy
开放获取类型	Green Published, Green Accepted, gold
收录类别	SCI-E
WOS记录号	WOS:000551223300016
WOS关键词	IONIZING-RADIATION ; MARS ; SPACE ; EARTH ; LIFE ; BIOSIGNATURES ; HABITABILITY ; RESISTANCE ; IDENTIFICATION ; SPECTROSCOPY
WOS类目	Biology ; Microbiology
WOS研究方向	Life Sciences & Biomedicine - Other Topics ; Microbiology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/319690
作者单位	1.German Aerosp Ctr DLR, Inst Planetary Res, Dept Planetary Labs, Astrobiol Labs, D-12489 Berlin, Germany; 2.Univ Roma Tor Vergata, Dept Biol, Lab Astrobiol & Mol Biol Cyanobacteria, I-00133 Rome, Italy; 3.German Aerosp Ctr DLR, Inst Aerosp Med, Radiat Biol Dept, Space Microbiol Res Grp, D-51147 Cologne, Germany
推荐引用方式 GB/T 7714	Baque, Mickael,Napoli, Alessandro,Claudia, Fagliarone,et al. Carotenoid Raman Signatures are Better Preserved in Dried Cells of the Desert Cyanobacterium Chroococcidiopsis than in Hydrated Counterparts after High-Dose Gamma Irradiation[J],2020,10(6).
APA	Baque, Mickael,Napoli, Alessandro,Claudia, Fagliarone,Moeller, Ralf,de Vera, Jean-Pierre,&Billi, Daniela.(2020).Carotenoid Raman Signatures are Better Preserved in Dried Cells of the Desert Cyanobacterium Chroococcidiopsis than in Hydrated Counterparts after High-Dose Gamma Irradiation.LIFE-BASEL,10(6).
MLA	Baque, Mickael,et al."Carotenoid Raman Signatures are Better Preserved in Dried Cells of the Desert Cyanobacterium Chroococcidiopsis than in Hydrated Counterparts after High-Dose Gamma Irradiation".LIFE-BASEL 10.6(2020).