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Phylogenetic and biosystematic relationships in four highly disjunct polyploid complexes in the subgenera Ceterach and Phyllitis in Asplenium (Aspleniaceae)

2002Journal article Restricted access
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dc.contributor.authorPinter, I.
dc.contributor.authorBakker, F.
dc.contributor.authorBarrett, J.
dc.contributor.authorCox, C. J.
dc.contributor.authorGibby, M.
dc.contributor.authorHenderson, S.
dc.contributor.authorMorgan-Richards, M.
dc.contributor.authorRumsey, F.
dc.contributor.authorRussell, S. J.
dc.contributor.authorTrewick, S.
dc.contributor.authorSchneider, H.
dc.contributor.authorVogel, J. C.
dc.date.accessioned2014-10-27T14:56:02Z
dc.date.available2014-10-27T14:56:02Z
dc.date.issued2002
dc.date.updated2014-10-24T09:54:45Z
dc.description.abstractPhylogenetic studies using DNA sequences of two chloroplast regions, rbcL and trnL-F, demonstrate that the proposed genus Ceterach is a small clade within the large genus Asplenium, and sister to the Phyllitis clade. The Ceterach clade is characterised by irregular anastomosing veins and often densely scaled leaf blades. Its taxonomic status as a group nested within Asplenium is confirmed, and it is accepted here as a subgenus with seven species. The Ceterach clade comprises four lineages that correspond to disjunct polyploid complexes: the A. aureum clade forming a polyploid complex (4´, 6´, 8´) in Macaronesia, the A. ceterach clade forming a polyploid complex (2´, 4´, 6´) in the Mediterranean Basin, the A. paucivenosum clade (4´, 6´) in central Asia, and the A. dalhousiae clade (2´) with a disjunct distribution in the Himalaya,Yemen and Eritrea, and southwestern North America. Asplenium paucivenosum is sister to all other members of the Ceterach clade, whereas A. dalhousiae is sister to the A. aureum clade that includes tetraploid A. aureum, hexaploid A. lolegnamense, and octoploid A. parvifolium. Asplenium ceterach and its variations – including the hexaploid A. ceterach subsp. mediterraneum subsp. nov. first described below – form a monophyletic unit, sister to a clade consisting of A. aureum and A. dalhousiae. Asplenium cordatum from Africa and A. haugthonii from the isolated atlantic island of St. Helena are not members of the Ceterach clade, which suggests that leaf blades with dense indumenta have evolved at least twice within asplenioid ferns. The allotetraploid species A. hybridum has the chloroplast DNA from A. ceterach, and therefore the latter species is the maternal ancestor of the former. The other parent of this hybrid species is A. sagittatum that is nested within the sister clade of Ceterach, the Phyllitis clade comprising A. sagittatum and A. scolopendrium. The findings suggest that the current distribution of Ceterach is either the result of long-distance dispersal or represents fragmented relicts of a previously more widely distributed species.por
dc.identifier.citationPinter, I.; Bakker, F.; Barrett, J.; Cox, C.J.; Gibby, M.; Henderson, S.; Morgan-Richards, M.; Rumsey, F.; Russell, S.J.; Trewick, S.; Schneider, H.; Vogel, J.C. Phylogenetic and biosystematic relationships in four highly disjunct polyploid complexes in the subgenera Ceterach and Phyllitis in Asplenium (Aspleniaceae), Organisms Diversity and Evolution, 2, 4, 299-311, 2002.por
dc.identifier.issn1439-6092
dc.identifier.urihttp://hdl.handle.net/10400.1/5531
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherSpringer Verlagpor
dc.subjectBiogeographypor
dc.subjectLong-distance dispersalpor
dc.subjectOceanic islandspor
dc.subjectRadiationspor
dc.subjectMolecular phylogenypor
dc.subjectPlant taxonomypor
dc.titlePhylogenetic and biosystematic relationships in four highly disjunct polyploid complexes in the subgenera Ceterach and Phyllitis in Asplenium (Aspleniaceae)por
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage311por
oaire.citation.issue4por
oaire.citation.startPage299por
oaire.citation.titleOrganisms Diversity and Evolutionpor
oaire.citation.volume2por
person.familyNameCox
person.givenNameCymon
person.identifier.ciencia-id6B15-9771-1D04
person.identifier.orcid0000-0002-4927-979X
person.identifier.ridD-1303-2012
person.identifier.scopus-author-id7402112716
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication82c3689c-60b6-440d-9d7b-49e6dbd6861b
relation.isAuthorOfPublication.latestForDiscovery82c3689c-60b6-440d-9d7b-49e6dbd6861b

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