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dc.contributor.author
Costa, Naíla B.  
dc.contributor.author
Kolman, María de los Ángeles  
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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  
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  
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Pantanal Wetland  
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Alkaline Saline Lakes  
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Arthrospira  
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Anabaenopsis  
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Nhecolândia  
dc.subject.classification
Biología Celular, Microbiología  
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Ciencias Biológicas  
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CIENCIAS NATURALES Y EXACTAS  
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  
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  
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