干旱区生态环境知识资源中心(Arid): Raman spectroscopic search for scytonemin and gloeocapsin in endolithic colonizations in large gypsum crystals

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DOI	10.1002/jrs.6186
	Raman spectroscopic search for scytonemin and gloeocapsin in endolithic colonizations in large gypsum crystals
	Nemeckova, Katerina; Culka, Adam; Nemec, Ivan; Edwards, Howell G. M.; Mares, Jan; Jehlicka, Jan
通讯作者	Nemeckova, K (corresponding author), Charles Univ Prague, Inst Geochem Mineral & Mineral Resourc, Fac Sci, Albertov 6, Prague 12843, Czech Republic.
来源期刊	JOURNAL OF RAMAN SPECTROSCOPY
ISSN	0377-0486
EISSN	1097-4555
出版年	2021-07
英文摘要	Rock-dwelling microorganisms are frequently exposed to intense UV-radiation, and thus, they synthesize specialized UV-protective pigments. In this study, Raman microspectrometry was used for analysis of noncarotenoid UV-protective pigments of dark-pigmented endolithic colonization found in gypsum outcrops from three areas (Sicily, Poland and Israel). Samples were investigated using 445-, 532- and 780-nm excitation lasers. Two noncarotenoid UV-protective pigments scytonemin and gloeocapsin were detected in all studied sites. Major Raman bands of scytonemin were found at around 1593, 1552, 1438 and 1173 cm(-1). Gloeocapsin shows characteristic Raman bands similar to anthraquinone-based parietin of lichens: at 1665, 1575, 1378, 1310 and 465 cm(-1). Scytonemin and gloeocapsin are highly specific for cyanobacteria and therefore can be used as biomarkers of certain taxa of cyanobacteria. Detection of such pigments by Raman spectroscopy using three excitation wavelengths allows to gather more information about the composition of endolithic consortia using relatively fast and noninvasive methods and in their natural habitats.
英文关键词	endoliths gypsum Raman microspectrometry UV-protective pigments
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000673570300001
WOS关键词	ATACAMA DESERT ; MICROBIAL COLONIZATION ; UV PROTECTANTS ; SULFATE DEPOSITS ; CYANOBACTERIA ; COMMUNITIES ; HALITE ; SANDSTONE ; DIVERSITY ; RELEVANCE
WOS类目	Spectroscopy
WOS研究方向	Spectroscopy
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/364013
作者单位	[Nemeckova, Katerina; Culka, Adam; Jehlicka, Jan] Charles Univ Prague, Inst Geochem Mineral & Mineral Resourc, Fac Sci, Albertov 6, Prague 12843, Czech Republic; [Nemec, Ivan] Charles Univ Prague, Dept Inorgan Chem, Fac Sci, Prague, Czech Republic; [Edwards, Howell G. M.] Univ Bradford, Ctr Astrobiol & Extremophiles Res, Fac Life Sci, Bradford, England; [Mares, Jan] Czech Acad Sci, Inst Hydrobiol, Biol Ctr, Ceske Budejovice, Czech Republic
推荐引用方式 GB/T 7714	Nemeckova, Katerina,Culka, Adam,Nemec, Ivan,et al. Raman spectroscopic search for scytonemin and gloeocapsin in endolithic colonizations in large gypsum crystals[J],2021.
APA	Nemeckova, Katerina,Culka, Adam,Nemec, Ivan,Edwards, Howell G. M.,Mares, Jan,&Jehlicka, Jan.(2021).Raman spectroscopic search for scytonemin and gloeocapsin in endolithic colonizations in large gypsum crystals.JOURNAL OF RAMAN SPECTROSCOPY.
MLA	Nemeckova, Katerina,et al."Raman spectroscopic search for scytonemin and gloeocapsin in endolithic colonizations in large gypsum crystals".JOURNAL OF RAMAN SPECTROSCOPY (2021).