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Phylogenetic Analysesof Basal AngiospermsBased on NinePlastid,Mitochondrial, andNuclear Genes Yin‐Long QiuOlena DombrovskaJung-Ho Lee2005 год

Phylogenetic Analyses of Basal Angiosperms Based on Nine Plastid, Mitochondrial, and Nuclear Genes
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Аннотация: DNA sequences of nine genes (plastid: atpB, matK, and rbcL; mitochondrial: atp1, matR, mtSSU, and mtLSU; nuclear: 18S and 26S rDNAs) from 100 species of basal angiosperms and gymnosperms were analyzed using parsimony, Bayesian, and maximum likelihood methods. All of these analyses support the following consensus of relationships among basal angiosperms. First, Amborella, Nymphaeaceae, and Austrobaileyales are strongly supported as a basal grade in the angiosperm phylogeny, with either Amborella or Amborella and Nymphaeales as sister to all other angiosperms. An examination of nucleotide substitution patterns of all nine genes ruled out any possibility of analytical artifacts because of RNA editing and GC‐content bias in placing these taxa at the base of the angiosperm phylogeny. Second, Magnoliales are sister to Laurales and Piperales are sister to Canellales. These four orders together constitute the magnoliid clade. Finally, the relationships among Ceratophyllum, Chloranthaceae, monocots, magnoliids, and eudicots are resolved in different ways in various analyses, mostly with low support. Our study indicates caution in total evidence approaches in that some of the genes employed (e.g., mtSSU, mtLSU, and nuclear 26S rDNA) added signal that conflicted with the other genes in resolving certain parts of the phylogenetic tree.
Год издания: 2005
Авторы: Yin‐Long Qiu, Olena Dombrovska, Jung-Ho Lee, Libo Li, Barbara A. Whitlock, Fabiana Bernasconi‐Quadroni, Joshua S. Rest, Charles C. Davis, Thomas Borsch, Khidir W. Hilu, Susanne S. Renner, Pamela S. Soltis, Pamela S. Soltis, Michael J. Zanis, Jamie J. Cannone, Robin R. Gutell, Martyn P. Powell, Vincent Savolainen, Lars W. Chatrou, Mark W. Chase
Издательство: University of Chicago Press
Источник: International Journal of Plant Sciences
Ключевые слова: Plant Diversity and Evolution, Plant and Fungal Species Descriptions, Genomics and Phylogenetic Studies
Другие ссылки: International Journal of Plant Sciences (HTML)
Digital Access to Scholarship at Harvard (DASH) (Harvard University) (PDF)
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Open access LMU (Ludwid Maxmilian's Universitat Munchen) (PDF)
Open access LMU (Ludwid Maxmilian's Universitat Munchen) (HTML)