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Global sampling reveals low genetic diversity within Compsopogon (Compsopogonales, Rhodophyta)

dc.contributor.authorNecchi Jr., Orlando [UNESP]
dc.contributor.authorGarcia Fo, Auro Silva [UNESP]
dc.contributor.authorSalomaki, Eric D.
dc.contributor.authorWest, John A.
dc.contributor.authorAboal, Marina
dc.contributor.authorVis, Morgan L.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionOhio University
dc.contributor.institutionUniversity of Melbourne
dc.contributor.institutionFacultad de Biología, Universidad de Murcia
dc.date.accessioned2014-05-27T11:29:02Z
dc.date.available2014-05-27T11:29:02Z
dc.date.issued2013-05-01
dc.description.abstractTwenty-five specimens of the freshwater red alga Compsopogon were collected from locations in North America, South America, Europe, Asia, Australasia and Oceania, and from an aquarium, with the goal of determining genetic diversity among specimens and ascertaining the number of phylogenetic species. Specimens were morphologically identified as having either the 'caeruleus' morphology, with regular polyhedral cortical cells, or the 'leptoclados' morphology, with irregular cortical cells with rhizoidal outgrowths. The 'leptoclados' morphology has been used by some researchers to distinguish the genus Compsopogonopsis from Compsopogon, or at least to distinguish C. leptoclados from other Compsopogon species. Sequence data for the rbcL gene and cox1 barcoding region were obtained for most specimens. In addition, SSU and partial LSU (barcode) rDNA were explored for a few specimens, but all sequences were identical. For the 25 newly generated and eight previously published rbcL gene data, there were seven unique haplotypes, but the sequence divergence was very low (≤7 bp, ≤ 0.7%). One haplotype was widespread, represented by 21 specimens from diverse locations in all regions sampled. Likewise, the 22 new and one previously published cox1 barcode region sequences yielded seven unique haplotypes with little sequence divergence (≤13 bp, ≤ 2.0%). One haplotype was widespread, being shared among 16 specimens from all regions. The combined molecular and morphological data showed no genetic differentiation between the 'caeruleus' and 'leptoclados' morphologies. The ubiquitous distribution of Compsopogon in tropical/subtropical regions and its low genetic variation are probably facilitated by the alga's ability to tolerate a wide range of stream conditions and its propagation via asexual spores. Given the findings of previous culture-based studies, morphometric research and field observations, coupled with the results of our study, we conclude there is only a single monospecific genus worldwide and that the species is correctly called C. caeruleus, since this is the oldest validly published name; all other previously described species of Compsopogon and Compsopogonopsis are synonyms. © 2013 British Phycological Society.en
dc.description.affiliationZoology and Botany Department São Paulo State University, Rua Cristóvão Colombo, São José do Rio Preto, SP 2265-15054-000
dc.description.affiliationDepartment of Environmental and Plant Biology Ohio University, Porter Hall 315, Athens, OH, 45701
dc.description.affiliationSchool of Botany University of Melbourne, Parkville, VIC 3010
dc.description.affiliationLaboratorio de Algología Departamento de Biología Vegetal Facultad de Biología, Universidad de Murcia, E-30100 Murcia
dc.description.affiliationUnespZoology and Botany Department São Paulo State University, Rua Cristóvão Colombo, São José do Rio Preto, SP 2265-15054-000
dc.format.extent152-162
dc.identifierhttp://dx.doi.org/10.1080/09670262.2013.783626
dc.identifier.citationEuropean Journal of Phycology, v. 48, n. 2, p. 152-162, 2013.
dc.identifier.doi10.1080/09670262.2013.783626
dc.identifier.issn0967-0262
dc.identifier.issn1469-4433
dc.identifier.scopus2-s2.0-84878490687
dc.identifier.urihttp://hdl.handle.net/11449/75245
dc.identifier.wosWOS:000319322700002
dc.language.isoeng
dc.relation.ispartofEuropean Journal of Phycology
dc.relation.ispartofjcr2.481
dc.relation.ispartofsjr0,865
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectbiogeography
dc.subjectCompsopogon
dc.subjectcox1 barcode region
dc.subjectfreshwater
dc.subjectLSU rDNA barcode region
dc.subjectrbcL
dc.subjectRhodophyta
dc.subjectSSU rDNA
dc.subjectstreams
dc.subjecttropics
dc.subjectcytology
dc.subjectdivergence
dc.subjectfreshwater environment
dc.subjectgene expression
dc.subjectgenetic analysis
dc.subjectgenetic variation
dc.subjectgenotype
dc.subjectmorphology
dc.subjectphylogenetics
dc.subjectpopulation genetics
dc.subjectred alga
dc.subjectsampling
dc.subjectstreamwater
dc.subjecttolerance
dc.subjecttropical region
dc.subjectAsia
dc.subjectAustralasia
dc.subjectEurope
dc.subjectNorth America
dc.subjectSouth America
dc.titleGlobal sampling reveals low genetic diversity within Compsopogon (Compsopogonales, Rhodophyta)en
dc.typeArtigo
dcterms.licensehttp://journalauthors.tandf.co.uk/permissions/reusingOwnWork.asp
dspace.entity.typePublication
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Biociências, Letras e Ciências Exatas, São José do Rio Pretopt
unesp.departmentZoologia e Botânica - IBILCEpt

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