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Article: Cyanobacteria and chloroflexi-dominated hypolithic colonization of quartz at the hyper-arid core of the Atacama Desert, Chile

TitleCyanobacteria and chloroflexi-dominated hypolithic colonization of quartz at the hyper-arid core of the Atacama Desert, Chile
Authors
KeywordsAtacama
Chloroflexi
Chroococcidiopsis
Desert
Hyper-arid
Hypolith
Issue Date2011
PublisherSpringer Japan. The Journal's web site is located at http://link.springer-ny.com/link/service/journals/00792/index.htm
Citation
Extremophiles, 2011, v. 15 n. 1, p. 31-38 How to Cite?
AbstractQuartz stones are ubiquitous in deserts and are a substrate for hypoliths, microbial colonists of the underside of such stones. These hypoliths thrive where extreme temperature and moisture stress limit the occurrence of higher plant and animal life. Several studies have reported the occurrence of green hypolithic colonization dominated by cyanobacteria. Here, we describe a novel red hypolithic colonization from Yungay, at the hyper-arid core of the Atacama Desert in Chile. Comparative analysis of green and red hypoliths from this site revealed markedly different microbial community structure as revealed by 16S rRNA gene clone libraries. Green hypoliths were dominated by cyanobacteria (Chroococcidiopsis and Nostocales phylotypes), whilst the red hypolith was dominated by a taxonomically diverse group of chloroflexi. Heterotrophic phylotypes common to all hypoliths were affiliated largely to desiccation-tolerant taxa within the Actinobacteria and Deinococci. Alphaproteobacterial phylotypes that affiliated with nitrogen-fixing taxa were unique to green hypoliths, whilst Gemmatimonadetes phylotypes occurred only on red hypolithon. Other heterotrophic phyla recovered with very low frequency were assumed to represent functionally relatively unimportant taxa. © 2010 The Author(s).
Persistent Identifierhttp://hdl.handle.net/10722/145000
ISSN
2015 Impact Factor: 2.346
2015 SCImago Journal Rankings: 0.972
PubMed Central ID
ISI Accession Number ID
Funding AgencyGrant Number
NASA
Hong Kong Research Grants CouncilHKU7733/08M HKU7763/10
Funding Information:

The authors acknowledge support extended by NASA's Astrobiology Science and Technology for Exploring Planets (ASTEP) program, and the Hong Kong Research Grants Council (Grant number HKU7733/08M HKU7763/10).

References

 

DC FieldValueLanguage
dc.contributor.authorLacap, DCen_HK
dc.contributor.authorWarren-Rhodes, KAen_HK
dc.contributor.authorMcKay, CPen_HK
dc.contributor.authorPointing, SBen_HK
dc.date.accessioned2012-02-21T05:44:50Z-
dc.date.available2012-02-21T05:44:50Z-
dc.date.issued2011en_HK
dc.identifier.citationExtremophiles, 2011, v. 15 n. 1, p. 31-38en_HK
dc.identifier.issn1431-0651en_HK
dc.identifier.urihttp://hdl.handle.net/10722/145000-
dc.description.abstractQuartz stones are ubiquitous in deserts and are a substrate for hypoliths, microbial colonists of the underside of such stones. These hypoliths thrive where extreme temperature and moisture stress limit the occurrence of higher plant and animal life. Several studies have reported the occurrence of green hypolithic colonization dominated by cyanobacteria. Here, we describe a novel red hypolithic colonization from Yungay, at the hyper-arid core of the Atacama Desert in Chile. Comparative analysis of green and red hypoliths from this site revealed markedly different microbial community structure as revealed by 16S rRNA gene clone libraries. Green hypoliths were dominated by cyanobacteria (Chroococcidiopsis and Nostocales phylotypes), whilst the red hypolith was dominated by a taxonomically diverse group of chloroflexi. Heterotrophic phylotypes common to all hypoliths were affiliated largely to desiccation-tolerant taxa within the Actinobacteria and Deinococci. Alphaproteobacterial phylotypes that affiliated with nitrogen-fixing taxa were unique to green hypoliths, whilst Gemmatimonadetes phylotypes occurred only on red hypolithon. Other heterotrophic phyla recovered with very low frequency were assumed to represent functionally relatively unimportant taxa. © 2010 The Author(s).en_HK
dc.languageengen_US
dc.publisherSpringer Japan. The Journal's web site is located at http://link.springer-ny.com/link/service/journals/00792/index.htmen_HK
dc.relation.ispartofExtremophilesen_HK
dc.rightsThe Author(s)en_US
dc.rightsCreative Commons: Attribution 3.0 Hong Kong Licenseen_US
dc.subjectAtacamaen_HK
dc.subjectChloroflexien_HK
dc.subjectChroococcidiopsisen_HK
dc.subjectDeserten_HK
dc.subjectHyper-ariden_HK
dc.subjectHypolithen_HK
dc.subject.meshCyanobacteria - classification - cytology - genetics - growth and development - isolation and purification-
dc.subject.meshDesert Climate-
dc.subject.meshFresh Water - microbiology-
dc.subject.meshRivers - microbiology-
dc.subject.meshWater Microbiology-
dc.titleCyanobacteria and chloroflexi-dominated hypolithic colonization of quartz at the hyper-arid core of the Atacama Desert, Chileen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4551/resserv?sid=springerlink&genre=article&atitle=Cyanobacteria and chloroflexi-dominated hypolithic colonization of quartz at the hyper-arid core of the Atacama Desert, Chile&title=Extremophiles&issn=14310651&date=2011-01-01&volume=15&issue=1& spage=31&authors=Donnabella C. Lacap, Kimberley A. Warren-Rhodes, Christopher P. McKay, <i>et al.</i>en_US
dc.identifier.emailPointing, SB: pointing@hkucc.hku.hken_HK
dc.identifier.authorityPointing, SB=rp00771en_HK
dc.description.naturepublished_or_final_versionen_US
dc.identifier.doi10.1007/s00792-010-0334-3en_HK
dc.identifier.pmid21069402en_HK
dc.identifier.pmcidPMC3017302-
dc.identifier.scopuseid_2-s2.0-78651248511en_HK
dc.identifier.hkuros218935-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-78651248511&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume15en_HK
dc.identifier.issue1en_HK
dc.identifier.spage31en_HK
dc.identifier.epage38en_HK
dc.identifier.eissn1433-4909en_US
dc.identifier.isiWOS:000286004100003-
dc.publisher.placeJapanen_HK
dc.description.otherSpringer Open Choice, 21 Feb 2012en_US
dc.identifier.scopusauthoridLacap, DC=9640383000en_HK
dc.identifier.scopusauthoridWarrenRhodes, KA=6507272414en_HK
dc.identifier.scopusauthoridMcKay, CP=7101952183en_HK
dc.identifier.scopusauthoridPointing, SB=6603986412en_HK
dc.identifier.citeulike8332335-
dc.customcontrol.immutablejt 130809-

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