The spatial structures of hypolithic communities in the Dry Valleys of East Antarctica

Received: 27 May 2014 / Revised: 19 August 2014 / Accepted: 21 August 2014 / Published online: 31 August 2014

Detalles Bibliográficos
Autores: Ríos, Asunción de los, Cary, Craig, Cowan, Don
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2014
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/121734
Acceso en línea:http://hdl.handle.net/10261/121734
Access Level:acceso abierto
Palabra clave:Antarctica
Biofilms
Cyanobacteria
EPS
Hypoliths
Moss
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spelling The spatial structures of hypolithic communities in the Dry Valleys of East AntarcticaRíos, Asunción de losCary, CraigCowan, DonAntarcticaBiofilmsCyanobacteriaEPSHypolithsMossReceived: 27 May 2014 / Revised: 19 August 2014 / Accepted: 21 August 2014 / Published online: 31 August 2014Hypolithic communities represent important reservoirs of microbial life in hyper-arid deserts. A number of studies on the diversity and ecology of these communities from different geographic areas have been reported in the past decade, but the spatial distribution of the different components of these communities is still not understood. Moss- and cyanobacteria-dominated hypolithic community morphotypes from Miers Valley (McMurdo Dry Valleys, East Antarctica) were analyzed by electron microscopy in order to characterize the microscale spatial structure. The two communities showed a high degree of internal organization, but differing according to the biological composition. In moss-dominated hypoliths, the moss plantlets are intermixed with mineral fragments of soil origin. However, in cyanobacteria-dominated hypoliths, a layered spatial organization was structured by filamentous cyanobacteria and associated extracellular polymeric components. While moss cells were lacking in cyanobacteria-dominated communities, biofilms formed by cyanobacteria and heterotrophic bacteria were observed in both community morphotypes. The water-holding capacity of both live and dead moss cells and the associated organic matrix, together with the protective properties of the extracellular polymeric substances, could facilitate the survival and activity of these communities. Similar structural strategies can favor the survival of microbial communities in different extreme environments.The microscopy study was funded by the Spanish Education Ministry grant CTM2012- 38222-C02-02.Peer reviewedSpringer NatureMinisterio de Educación (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2014info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/121734reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1007/s00300-014-1564-0Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1217342026-05-22T06:33:51Z
dc.title.none.fl_str_mv The spatial structures of hypolithic communities in the Dry Valleys of East Antarctica
title The spatial structures of hypolithic communities in the Dry Valleys of East Antarctica
spellingShingle The spatial structures of hypolithic communities in the Dry Valleys of East Antarctica
Ríos, Asunción de los
Antarctica
Biofilms
Cyanobacteria
EPS
Hypoliths
Moss
title_short The spatial structures of hypolithic communities in the Dry Valleys of East Antarctica
title_full The spatial structures of hypolithic communities in the Dry Valleys of East Antarctica
title_fullStr The spatial structures of hypolithic communities in the Dry Valleys of East Antarctica
title_full_unstemmed The spatial structures of hypolithic communities in the Dry Valleys of East Antarctica
title_sort The spatial structures of hypolithic communities in the Dry Valleys of East Antarctica
dc.creator.none.fl_str_mv Ríos, Asunción de los
Cary, Craig
Cowan, Don
author Ríos, Asunción de los
author_facet Ríos, Asunción de los
Cary, Craig
Cowan, Don
author_role author
author2 Cary, Craig
Cowan, Don
author2_role author
author
dc.contributor.none.fl_str_mv Ministerio de Educación (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Antarctica
Biofilms
Cyanobacteria
EPS
Hypoliths
Moss
topic Antarctica
Biofilms
Cyanobacteria
EPS
Hypoliths
Moss
description Received: 27 May 2014 / Revised: 19 August 2014 / Accepted: 21 August 2014 / Published online: 31 August 2014
publishDate 2014
dc.date.none.fl_str_mv 2014
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/121734
url http://hdl.handle.net/10261/121734
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1007/s00300-014-1564-0
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Springer Nature
publisher.none.fl_str_mv Springer Nature
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,81155

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