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Citation for Study 1079

About Citation title: "Evolution and biogeography of the austral genus Phyllocladus (Podocarpaceae).".
About This study was previously identified under the legacy study ID S982 (Status: Published).

Citation

Wagstaff S. 2003. Evolution and biogeography of the austral genus Phyllocladus (Podocarpaceae). Journal of Biogeography, null.

Authors

  • Wagstaff S.

Abstract

Abstract Aim Examine evolutionary relationships within the genus Phyllocladus and among its close relatives by phylogenetic analysis of DNA sequences. Interpret the inferred relationships in association with the fossil record to examine the origin and diversification of the genus. Location Australasia. Methods Phylogenetic analyses of rbcL, matK and ITS sequences representing all of the extant species of Phyllocladus and a selection of outgroups from the Podocarpaceae and Araucariaceae. Results The rbcL and matK sequences exhibit little variation within Phyllocladus, but ally its members to Podocarpaceae although its immediate sister remains unclear. The ITS sequences resolve all five species of Phyllocladus and two intraspecific ecotypes of P. alpinus. Main conclusions Phyllocladus forms a distinct lineage that diverged early in the evolutionary history of the Podocarpaceae. The fossil record indicates that the genus was more widely distributed and morphologically diverse during the early Tertiary than at present. Although of Mesozoic origin, the level of sequence variation within Phyllocladus suggests that the extant species have undergone a relatively recent radiation. New Zealand is the present center of species diversity. Keywords Araucariaceae, Australasia, biogeography, DNA sequences, ITS, matK, New Zealand, Phyllocladus, phylogeny, Podocarpaceae, rbcL.

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  • Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S1079
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