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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Phylogenetic analysis of the plastid inverted repeat for 244 species: Insights into deeper-level Angiosperm relationships from a long, slowly evolving sequence region
International Journal of Plant Sciences, Volume 172, No. 4, Year 2011
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Description
Recent plastid phylogenomic studies have helped clarify the backbone phylogeny of angiosperms. However, the relatively limited taxon sampling in these studies has precluded strongly supported resolution of some regions of angiosperm phylogeny. Other recent work has suggested that the 25,000-bp plastid inverted repeat (IR) region may be a valuable source of characters for resolving these remaining problematic nodes. Consequently, we aligned all available angiosperm IR sequences to produce a matrix of 24,702 aligned bases for 246 accessions, including 36 new accessions. Maximum likelihood analyses of the complete data set yielded a generally well-supported topology that is highly congruent with those of recent plastid phylogenomic analyses. However, reducing taxon sampling to match a recent 83-gene plastid analysis resulted in significant changes in bootstrap support at some nodes. Notably, IR analyses resolved Pentapetalae into three wellsupported clades: (1) superasterids (comprising Santalales, Caryophyllales, Berberidopsidales, and Asteridae), (2) superrosids (comprising Vitaceae, Saxifragales, and Rosidae), and (3) Dilleniaceae. These results provide important new evidence for a stable, well-supported phylogenetic framework for angiosperms and demonstrate the utility of IR data for resolving the deeper levels of angiosperm phylogeny. They also reiterate the importance of carefully considering taxon sampling in phylogenomic studies. © 2011 by The University of Chicago. All rights reserved.
Authors & Co-Authors
Moore, Michael J.
United States, Oberlin
Oberlin College and Conservatory
Hassan, Nasr M.S.
Egypt, Asyut
Faculty of Science
Gitzendanner, Matthew Aaron
United States, Gainesville
University of Florida
Bruenn, Riva A.
United States, Oberlin
Oberlin College and Conservatory
Croley, Matthew
United States, Oberlin
Oberlin College and Conservatory
Vandeventer, Alexia
United States, Gainesville
University of Florida
Horn, James W.
United States, Washington, D.c.
Smithsonian National Museum of Natural History
Dhingra, Amit
United States, Pullman
Washington State University Pullman
Brockington, Samuel F.
United Kingdom, Cambridge
University of Cambridge
Latvis, Maribeth
Egypt, Asyut
Faculty of Science
Ramdial, Jeremy
Egypt, Asyut
Faculty of Science
Alexandre, Roolse
Egypt, Asyut
Faculty of Science
Piedrahita, Ana
Egypt, Asyut
Faculty of Science
Xi, Zhenxiang
United States, Cambridge
Harvard University
Davis, Charles C.
United States, Cambridge
Harvard University
Soltis, Pamela S.
United States, Gainesville
Florida Museum of Natural History
Soltis, Douglas Edward
Egypt, Asyut
Faculty of Science
Statistics
Citations: 82
Authors: 17
Affiliations: 8
Identifiers
Doi:
10.1086/658923
ISSN:
10585893
Research Areas
Genetics And Genomics