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dc.contributor.author
Costa, Naíla B.
dc.contributor.author
Kolman, María de los Ángeles
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dc.contributor.author
Gianni, Alessandra
dc.coverage.spatial
Brazilian Pantanal
dc.date.available
2017-07-07T22:33:08Z
dc.date.issued
2016-11-25
dc.identifier.citation
Costa, Naíla B.; Kolman, María de los Ángeles; Gianni, Alessandra; Cyanobacteria diversity in alkaline saline lakes in the Brazilian Pantanal wetland: a polyphasic approach; Oxford University Press; Journal of Plankton Research; 38; 6; 25-11-2016; 1389-1403
dc.identifier.issn
0142-7873
dc.identifier.uri
http://hdl.handle.net/11336/19953
dc.description.abstract
Shallow alkaline saline lakes are often found in the Brazilian Pantanal and although their extreme conditions are adverse to many phytoplankton organisms, they may support growth of dense cyanobacterial blooms. Here, we tested the hypothesis of reduced cyanobacterial diversity in these stressful environments, investigating changes between rainy and dry periods and analyzed which methodology would be best suited to assess this community. The cyanobacteria were studied in three lakes at three time periods, using morphological (microscopy) and molecular approaches (DGGE and ARDRA analyses of 16S rRNA gene segments). All methods showed that cyanobacteria dominance was higher during dry periods, probably as a consequence of intensified selective pressure by the increased solute concentration. Anabaenopsis elenikinii was the major bloom-forming cyanobacterium, followed by Arthrospira platensis. Interestingly, these two species never coexisted, but differentiated stages of one were observed during dominance of the other, suggesting that they may be excluding competitors. These life-stage differences, only detected through microscopic examination, show the importance of this approach. However, the detection of small-unseen picocyanobacteria and mainly the possibilit to access population genotype diversity reinforce the relevance of molecular techniques. Therefore, this combined methodology was particularly suitable to assess cyanobacteria communities in these extreme environments.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Oxford University Press
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Cyanobacteria
dc.subject
Ardra
dc.subject
Dgge
dc.subject
Pantanal Wetland
dc.subject
Alkaline Saline Lakes
dc.subject
Arthrospira
dc.subject
Anabaenopsis
dc.subject
Nhecolândia
dc.subject.classification
Biología Celular, Microbiología
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Cyanobacteria diversity in alkaline saline lakes in the Brazilian Pantanal wetland: a polyphasic approach
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-06-21T19:59:37Z
dc.journal.volume
38
dc.journal.number
6
dc.journal.pagination
1389-1403
dc.journal.pais
Reino Unido
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dc.journal.ciudad
Oxford
dc.description.fil
Fil: Costa, Naíla B.. Universidade Federal Do Minas Gerais. Instituto de Ciencias Biológicas. Departamento de Botánica; Brasil
dc.description.fil
Fil: Kolman, María de los Ángeles. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidade Federal Do Minas Gerais. Instituto de Ciencias Biológicas. Departamento de Botánica; Brasil
dc.description.fil
Fil: Gianni, Alessandra. Universidade Federal Do Minas Gerais. Instituto de Ciencias Biológicas. Departamento de Botánica; Brasil
dc.journal.title
Journal of Plankton Research
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1093/plankt/fbw066
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/plankt/article-abstract/38/6/1389/2528005/Cyanobacteria-diversity-in-alkaline-saline-lakes?redirectedFrom=fulltext
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