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Citation for Study 267

About Citation title: "Phylogenetic relationships of the liverworts (Hepaticae), a basal embryophyte lineage, inferred from nucleotide sequence data of the chloroplast gene rbcL.".
About This study was previously identified under the legacy study ID S6x23x97c17c57c34 (Status: Published).

Citation

Lewis L., Mishler B., & Vilgalys R. 1997. Phylogenetic relationships of the liverworts (Hepaticae), a basal embryophyte lineage, inferred from nucleotide sequence data of the chloroplast gene rbcL. Molecular Phylogenetics and Evolution, 7: 377-393.

Authors

  • Lewis L.
  • Mishler B.
  • Vilgalys R.

Abstract

Sequence data from the chloroplast-encoded gene, rbcL, were obtained for twenty-four liverworts, a basal group of embryophytes. Maximum likelihood and parsimony analyses of these data, along with data from other major green plant lineages, confirm hypotheses based on morphological data, such as the paraphyly of bryophytes, and the basal position of liverworts. Molecular data corroborate the deep separation between the complex thalloid and leafy/simple thalloid liverworts implied by morphological data, but the monophyly of liverworts could not be rejected. The effects of accounting for site-to-site rate heterogeneity in these data were examined using maximum likelihood methods. Comparison of trees obtained with and without rate heterogeneity showed that simply allowing for heterogeneity had a greater improvement on likelihood score than optimization of transition/transversion bias. Incorporation of site-to-site rate heterogeneity in the larger analysis, however, did not necessarily change which topology.

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  • Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S267
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