Journal ArticleDOI
The earliest angiosperms: evidence from mitochondrial, plastid and nuclear genomes
Yin Long Qiu,Jungho Lee,Fabiana Bernasconi-Quadroni,Douglas E. Soltis,Pamela S. Soltis,Michael J. Zanis,Elizabeth A. Zimmer,Zhi-Duan Chen,Zhi-Duan Chen,Vincent Savolainen,Mark W. Chase +10 more
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TLDR
This study demonstrates that Amboreella, Nymphaeales and Illiciales-Trimeniaceae-Austrobaileya represent the first stage of angiosperm evolution, with Amborella being sister to all other angiosperms, and shows that Gnetales are related to the conifers and are not sister to the angios perms, thus refuting the Anthophyte Hypothesis.Abstract:
Angiosperms have dominated the Earth's vegetation since the mid-Cretaceous (90 million years ago), providing much of our food, fibre, medicine and timber, yet their origin and early evolution have remained enigmatic for over a century. One part of the enigma lies in the difficulty of identifying the earliest angiosperms; the other involves the uncertainty regarding the sister group of angiosperms among extant and fossil gymnosperms. Here we report a phylogenetic analysis of DNA sequences of five mitochondrial, plastid and nuclear genes (total aligned length 8,733 base pairs), from all basal angiosperm and gymnosperm lineages (105 species, 103 genera and 63 families). Our study demonstrates that Amborella, Nymphaeales and Illiciales-Trimeniaceae-Austrobaileya represent the first stage of angiosperm evolution, with Amborella being sister to all other angiosperms. We also show that Gnetales are related to the conifers and are not sister to the angiosperms, thus refuting the Anthophyte Hypothesis. These results have far-reaching implications for our understanding of diversification, adaptation, genome evolution and development of the angiosperms.read more
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An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG II
TL;DR: A revised and updated classification for the families of the flowering plants is provided in this paper, which includes Austrobaileyales, Canellales, Gunnerales, Crossosomatales and Celastrales.
Journal ArticleDOI
Evolution of the angiosperms: calibrating the family tree.
TL;DR: Angiosperm divergence times are estimated using non–parametric rate smoothing and a three–gene dataset covering ca.
Journal ArticleDOI
Angiosperm phylogeny inferred from 18S rDNA, rbcL, and atpB sequences
Douglas E. Soltis,Pamela S. Soltis,Mark W. Chase,Mark E. Mort,Dirk C. Albach,Michael J. Zanis,Vincent Savolainen,William H. Hahn,Sara B. Hoot,Michael F. Fay,Michael J. Axtell,Susan M. Swensen,Linda M. Prince,W. John Kress,Kevin C. Nixon,James S. Farris +15 more
TL;DR: A phylogenetic analysis of a combined data set for 560 angiosperms and seven outgroups based on three genes, 18S rDNA, rbcL, and atpB representing a total of 4733 bp is presented, resulting in the most highly resolved and strongly supported topology yet obtained for angiosPerms.
Journal ArticleDOI
Resolution of the early placental mammal radiation using Bayesian phylogenetics
William J. Murphy,Eduardo Eizirik,Eduardo Eizirik,Stephen J. O'Brien,Ole Madsen,Mark Scally,Mark Scally,Christophe J. Douady,Christophe J. Douady,Emma C. Teeling,Emma C. Teeling,Oliver A. Ryder,Michael J. Stanhope,Michael J. Stanhope,Wilfried W. de Jong,Mark S. Springer +15 more
TL;DR: Crown-group Eutheria may have their most recent common ancestry in the Southern Hemisphere (Gondwana), and placental phylogeny is investigated using Bayesian and maximum-likelihood methods and a 16.4-kilobase molecular data set.
Journal ArticleDOI
Phylogenomics and the reconstruction of the tree of life.
TL;DR: This work has demonstrated the power of the phylogenomics approach, which has the potential to provide answers to several fundamental evolutionary questions, but challenges for the future have also been revealed.
References
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Journal ArticleDOI
Phylogenetics of seed plants: an analysis of nucleotide sequences from the plastid gene rbcL.
TL;DR: Two exploratory parsimony analyses of DNA sequences from 475 and 499 species of seed plants, respectively, representing all major taxonomic groups indicate that rbcL sequence variation contains historical evidence appropriate for phylogenetic analysis at this taxonomic level of sampling.
Journal ArticleDOI
Flowering plants; origin and dispersal
A. L. Takhtadzhi︠a︡n,C. Jeffrey +1 more
TL;DR: In this article, the origin and dispersal of a plant is discussed in the context of origin and migration of a species of a genus called "Flowering Plants" in the Middle East.
Journal ArticleDOI
Angiosperm phylogeny inferred from multiple genes as a tool for comparative biology
TL;DR: The results of parsimony analyses of DNA sequences of the plastid genes rbcL and atpB and the nuclear 18S rDNA for 560 species of angiosperms and seven non-flowering seed plants are reported and show a well-resolved and well-supported phylogenetic tree for the angios perms for use in comparative biology.
Book
Molecular Systematics of Plants
TL;DR: The chloroplast DNA restriction site variation and the evolution of the annual habit in North American Coreopsis (Asteraceae) and the suitability of molecular and morphological evidence in reconstructing plant phylogeny are examined.
Journal ArticleDOI
Is it better to add taxa or characters to a difficult phylogenetic problem
TL;DR: The effects on phylogenetic accuracy of adding characters and/or taxa were explored using data generated by computer simulation using a four-taxon tree representing a difficult phylogenetic problem with an extreme situation of long branch attraction.