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dc.contributor.authorBenzerara, K.
dc.contributor.authorChapon, V.
dc.contributor.authorMoreira, D.
dc.contributor.authorLópez-García, P.
dc.date.accessioned2021-02-12T21:40:47Z
dc.date.available2021-02-12T21:40:47Z
dc.date.issued2006-01-01
dc.identifier.citationBenzerara, K., Chapon, V., Moreira, D., López-García, P., Guyot, F., & Heulin, T. (2006). Microbial diversity on the Tatahouine meteorite. Meteoritics & Planetary Science, 41(8), 1249-1265.
dc.identifier.issn1945-5100
dc.identifier.doi10.1111/j.1945-5100.2006.tb00519.x
dc.identifier.urihttp://hdl.handle.net/10150/656167
dc.description.abstractBiological processes can alter the chemistry and mineralogy of meteorites in a very short time, even in cold or hot deserts. It is thus important to assess the diversity of microorganisms that colonize meteorites in order to better understand their physiological capabilities. Microscopy observations of Tatahouine meteorite fragments that were exposed for 70 years in the Sahara desert showed that they were colonized by morphologically diverse biomorphs. A molecular diversity study based on 16S rRNA gene amplification of DNA supported the conclusion that a huge taxonomic diversity of prokaryotes colonized the Tatahouine meteorite in less than 70 years in the Tatahouine sand. Eleven different bacterial divisions were evidenced, among which Cytophaga-Flexibacter- Bacteroides (CFB), Cyanobacteria, and Alpha-Proteobacteria were dominantly represented. Crenarcheota were also detected. Most of the Tatahouine meteorite phylotypes were related to sequences identified in the surrounding Tatahouine more generally to sequences detected in soils. Some of them, in particular many of the archaeal phylotypes, were detected in arid regions in association with desert varnish. The results suggest that the diversity of the clone library generated from the meteorite fraction was reduced compared with that of the Tatahouine sand clone library, which can be explained as the result of partial colonization of the meteorite and/or a specific selection of colonizing bacteria by the substrate. We discuss the possibility that several groups detected in this study may play a prominent role in the various alteration processes detected at the surface of the Tatahouine meteorite.
dc.language.isoen
dc.publisherThe Meteoritical Society
dc.relation.urlhttps://meteoritical.org/
dc.rightsCopyright © The Meteoritical Society
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectBiological activity
dc.subjectBiological contamination
dc.subjectBiological signature
dc.titleMicrobial diversity on the Tatahouine meteorite
dc.typeArticle
dc.typetext
dc.identifier.journalMeteoritics & Planetary Science
dc.description.collectioninformationThe Meteoritics & Planetary Science archives are made available by the Meteoritical Society and the University of Arizona Libraries. Contact lbry-journals@email.arizona.edu for further information.
dc.eprint.versionFinal published version
dc.description.admin-noteMigrated from OJS platform February 2021
dc.source.volume41
dc.source.issue8
dc.source.beginpage1249
dc.source.endpage1265
refterms.dateFOA2021-02-12T21:40:47Z


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