Seed Plant Phylogeny and the Relationships of Gnetales

@article{Doyle1996SeedPP,
  title={Seed Plant Phylogeny and the Relationships of Gnetales},
  author={James A. Doyle},
  journal={International Journal of Plant Sciences},
  year={1996},
  volume={157},
  pages={S3 - S39}
}
  • J. Doyle
  • Published 1 November 1996
  • Biology
  • International Journal of Plant Sciences
Most phylogenetic analyses of morphological data agree that Gnetales are a monophyletic group related to angiosperms and Bennettitales. However, they disagree on whether these groups (anthophytes) are related to coniferopsids or to Mesozoic seed ferns, and thus on whether the flowers of Gnetales are primitively simple or reduced. Molecular analyses indicate that both Gnetales and angiosperms are monophyletic but disagree on their relationship. The conclusion of Nixon et al. (1994) that Gnetales… 
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TLDR
Characters of bennettitalean plants are summarized and new evidence for the structure of cones and seeds is presented that help clarify relationships of Bennettitales to flowering plants, Gnetales, and other potential angiosperm sister groups.
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  • 1998
TLDR
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TLDR
It is surprising that in two recent studies encompassing representatives from all three gnetalean genera and from all contemporary gymnosperm groups, the Gnetales showed a tendency to cluster with conifers rather than with angiosperms, which is quite inconsistent with the expectations crisply formulated from the anthophyte theory.
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TLDR
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Phylogeny of seed plants based on all three genomic compartments: extant gymnosperms are monophyletic and Gnetales' closest relatives are conifers.
TLDR
The molecular phylogeny strongly conflicts with current interpretations of seed plant morphology, and implies that many similarities between gnetophytes and angiosperms were independently derived, whereas other characters could emerge as synapomorphies for an expanded conifer group including Gnetales.
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TLDR
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Molecular and Fossil Evidence on the Origin of Angiosperms
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  • 2012
TLDR
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Seed ferns from the late Paleozoic and Mesozoic: Any angiosperm ancestors lurking there?
TLDR
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Phylogeny of seed plants based on evidence from eight genes.
TLDR
A data set of four plastid genes, three mitochondrial genes, and one nuclear gene for 19 exemplars representing the five groups of living seed plants revealed a gymnosperm clade that is sister to angiosperms and the preferred topology based on the LR test is that Gnetales are sister to Pseudotsuga.
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  • Environmental Science, Geography
    International Journal of Plant Sciences
  • 1996
TLDR
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TLDR
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TLDR
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TLDR
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