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Angiosperm Phylogeny: 17 Genes, 640 Taxa
American Journal of Botany (2011)
  • Douglas E. Soltis, University of Florida
  • Steven A. Smith, Brown University
  • Nico Cellinese, Florida Museum of Natural History
  • Kenneth J. Wurdack
  • David C. Tank, University of Idaho
  • Samuel F. Brockington, University of Cambridge
  • Nancy F. Refulio-Rodriguez
  • Jay B. Walker
  • Michael J. Moore
  • Barbara S. Carlsward, Eastern Illinois University
  • Charles D. Bell, University of New Orleans
  • Maribeth Latvis, University of Florida
  • Sunny Crawley, Virginia Polytechnic Institute and State University
  • Chelsea Black, Virginia Polytechnic Institute and State University
  • Diaga Diouf, Virginia Polytechnic Institute and State University
  • Zhenxiang Xi, Harvard University
  • Catherine A. Rushworth, Harvard University
  • Matthew A. Gitzendanner, University of Florida
  • Kenneth J. Sytsma
  • Yin-Long Qiu
  • Khidir W. Hilu, Virginia Polytechnic Institute and State University
  • Charles C. Davis, Harvard University
  • Michael J. Sanderson, University of Arizona
  • Reed S. Beaman, Florida Museum of Natural History
  • Richard G. Olmstead
  • Walter S. Judd, University of Florida
  • Michael S. Donoghue, Yale University
  • Pamela S. Soltis, Florida Museum of Natural History

• Premise of the study : Recent analyses employing up to fi ve genes have provided numerous insights into angiosperm phylogeny, but many relationships have remained unresolved or poorly supported. In the hope of improving our understanding of angiosperm phylogeny, we expanded sampling of taxa and genes beyond previous analyses.

• Methods : We conducted two primary analyses based on 640 species representing 330 families. The fi rst included 25 260 aligned base pairs (bp) from 17 genes (representing all three plant genomes, i.e., nucleus, plastid, and mitochondrion). The second included 19 846 aligned bp from 13 genes (representing only the nucleus and plastid).

• Key results : Many important questions of deep-level relationships in the nonmonocot angiosperms have now been resolved with strong support. Amborellaceae, Nymphaeales, and Austrobaileyales are successive sisters to the remaining angiosperms ( Mesangiospermae ), which are resolved into Chloranthales + Magnoliidae as sister to Monocotyledoneae + [Ceratophyllaceae + Eudicotyledoneae ]. Eudicotyledoneae contains a basal grade subtending Gunneridae . Within Gunneridae , Gunnerales are sister to the remainder ( Pentapetalae ), which comprises (1) Superrosidae , consisting of Rosidae (including Vitaceae) and Saxifragales; and (2) Superasteridae , comprising Berberidopsidales, Santalales, Caryophyllales , Asteridae , and, based on this study, Dilleniaceae (although other recent analyses disagree with this placement). Within the major subclades of Pentapetalae , most deep-level relationships are resolved with strong support.

• Conclusions : Our analyses confi rm that with large amounts of sequence data, most deep-level relationships within the angiosperms can be resolved. We anticipate that this well-resolved angiosperm tree will be of broad utility for many areas of biology, including physiology, ecology, paleobiology, and genomics.

  • angiosperms; bioinformatics; large data sets; molecular systematics; RAxML; S uperasteridae ; supermatrix; Superrosidae
Publication Date
Publisher Statement
This article is copyright 2011 American Journal of Botany and is available in open access full text at doi: 10.3732/ajb.1000404
Citation Information
Douglas E. Soltis, Steven A. Smith, Nico Cellinese, Kenneth J. Wurdack, et al.. "Angiosperm Phylogeny: 17 Genes, 640 Taxa" American Journal of Botany Vol. 98 Iss. 4 (2011)
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