Display Settings:

Format

Send to:

Choose Destination
We are sorry, but NCBI web applications do not support your browser and may not function properly. More information
    Proc Natl Acad Sci U S A. 2006 Oct 17;103(42):15511-6. Epub 2006 Oct 9.

    The deepest divergences in land plants inferred from phylogenomic evidence.

    Source

    Department of Ecology and Evolutionary Biology, University Herbarium, University of Michigan, Ann Arbor, MI 48109-1048, USA. ylqiu@umich.edu

    Abstract

    Phylogenetic relationships among the four major lineages of land plants (liverworts, mosses, hornworts, and vascular plants) remain vigorously contested; their resolution is essential to our understanding of the origin and early evolution of land plants. We analyzed three different complementary data sets: a multigene supermatrix, a genomic structural character matrix, and a chloroplast genome sequence matrix, using maximum likelihood, maximum parsimony, and compatibility methods. Analyses of all three data sets strongly supported liverworts as the sister to all other land plants, and analyses of the multigene and chloroplast genome matrices provided moderate to strong support for hornworts as the sister to vascular plants. These results highlight the important roles of liverworts and hornworts in two major events of plant evolution: the water-to-land transition and the change from a haploid gametophyte generation-dominant life cycle in bryophytes to a diploid sporophyte generation-dominant life cycle in vascular plants. This study also demonstrates the importance of using a multifaceted approach to resolve difficult nodes in the tree of life. In particular, it is shown here that densely sampled taxon trees built with multiple genes provide an indispensable test of taxon-sparse trees inferred from genome sequences.

    PMID:
    17030812
    [PubMed - indexed for MEDLINE]
    PMCID:
    PMC1622854
    Free PMC Article

    Images from this publication.See all images (3)Free text

    Fig. 1.
    Fig. 2.
    Fig. 3.

    Publication Types, MeSH Terms, Secondary Source ID

    Publication Types

    MeSH Terms

    Secondary Source ID

      Supplemental Content

      Icon for HighWire Icon for PubMed Central

      Save items

      Recent activity

      Your browsing activity is empty.

      Activity recording is turned off.

      Turn recording back on

      See more...
      Write to the Help Desk