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Evolution of the Fucaceae (Phaeophyceae) inferred from nrDNA-ITS

1999-04Journal article Open Access
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dc.contributor.authorSerrão, Ester
dc.contributor.authorAlice, L. A.
dc.contributor.authorBrawley, S. H.
dc.date.accessioned2014-05-23T12:26:54Z
dc.date.available2014-05-23T12:26:54Z
dc.date.issued1999-04
dc.date.updated2014-05-21T14:15:49Z
dc.description.abstractSequences of the internal transcribed spacer region (ITS-1, 5.8S, and ITS-2) of nuclear ribosomal DNA were obtained from 16 species representing all six genera of Fucaceae (Ascophyllum, Fucus, Hesperophycus, Pelvetia, Pelvetiopsis, and Xiphophora) plus one outgroup (Hormosira). Parsimony analysis indicated that the family Fucaceae is monophyletic and that the northern hemisphere taxa are highly divergent from the only southern hemisphere genus, Xiphophora. The genus Pelvetia is not monophyletic because the European P. canaliculata is more closely related to Fucus, Hesperophycus, and Pelvetiopsis than to other Pelvetia species. We establish Silvetia, gen. nov. and transfer the 3 Pacific species of Pelvetia to the new genus. Fucus is monophyletic and not ancestral in the Fucaceae. The ITS sequences identified two strongly supported lineages within Fucus, one with F. serratus sister to the clade containing F. gardneri, F. distichus, and F. evanescens and a second including F. vesiculosus, F. spiralis, F. ceranoides, and F. virsoides. The ITS was not useful for resolving relationships within each of these clusters and between populations of F. vesiculosus. Within-individual variation in ITS sequences is high in Fucus, a derived genus, compared to Ascophyllum, a more ancestral genus. Mapping of the two characters that form the basis of Powell’s model for speciation in the Fucaceae showed that 1) number of eggs per oogonium has not followed a gradual reduction and that 2) monoecy/dioecy has changed several times during evolution of this family.por
dc.identifier.citationSerrão, E.A.; Alice, L.A.; Brawley, S.H.Evolution of the Fucaceae (Phaeophyceae) inferred from nrDNA-ITS, Journal of Phycology, 35, 2, 382-394, 1999.por
dc.identifier.doihttp://dx.doi.org/ 10.1046/j.1529-8817.1999.3520382.x
dc.identifier.issn0022-3646
dc.identifier.otherAUT: ESE00527;
dc.identifier.urihttp://hdl.handle.net/10400.1/4045
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherWileypor
dc.relation.publisherversionhttp://onlinelibrary.wiley.com/doi/10.1046/j.1529-8817.1999.3520382.x/fullpor
dc.subjectAscophyllumpor
dc.subjectFucaceaepor
dc.subjectFucuspor
dc.subjectHesperophycuspor
dc.subjectnrDNA internal transcribed spacerspor
dc.subjectPelvetiapor
dc.subjectPelvetiopsispor
dc.titleEvolution of the Fucaceae (Phaeophyceae) inferred from nrDNA-ITSpor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage394por
oaire.citation.issue2por
oaire.citation.startPage382por
oaire.citation.titleJournal of Phycologypor
oaire.citation.volume35por
person.familyNameSerrao
person.givenNameEster A.
person.identifierC-6686-2012
person.identifier.ciencia-id5B13-B26E-B1EC
person.identifier.orcid0000-0003-1316-658X
person.identifier.scopus-author-id7004093604
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication45ccfe90-155c-4d6f-9e86-8f0fd064005f
relation.isAuthorOfPublication.latestForDiscovery45ccfe90-155c-4d6f-9e86-8f0fd064005f

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