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Toward a global phylogeny of the Brassicaceae.
Mol Biol Evol 2006; 23(11):2142-60MB

Abstract

The Brassicaceae is a large plant family (338 genera and 3,700 species) of major scientific and economic importance. The taxonomy of this group has been plagued by convergent evolution in nearly every morphological feature used to define tribes and genera. Phylogenetic analysis of 746 nrDNA internal transcribed spacer (ITS) sequences, representing 24 of the 25 currently recognized tribes, 146 genera, and 461 species of Brassicaceae, produced the most comprehensive, single-locus-based phylogenetic analysis of the family published to date. Novel approaches to nrDNA ITS analysis and extensive taxonomic sampling offered a test of monophyly for a large complement of the currently recognized tribes and genera of Brassicaceae. In the most comprehensive analysis, tribes Alysseae, Anchonieae plus Hesperideae, Boechereae, Cardamineae, Eutremeae, Halimolobeae, Iberideae, Noccaeeae, Physarieae, Schizopetaleae, Smelowskieae, and Thlaspideae were all monophyletic. Several broadly defined genera (e.g., Draba and Smelowskia) were supported as monophyletic, whereas others (e.g., Sisymbrium and Alyssum) were clearly polyphyletic. Analyses of ITS data identified several problematic sequences attributable to errors in sample identification or database submission. Results from parsimony ratchet and Bayesian analyses recovered little support for the backbone of the phylogeny, suggesting that many lineages of Brassicaceae have undergone rapid radiations that may ultimately be difficult to resolve with any single locus. However, the development of a preliminary supermatrix including the combination of 10 loci for 65 species provides an initial estimate of intertribal relations and suggests that broad application of such a method will provide greater understanding of relationships in the family.

Authors+Show Affiliations

Department of Biology, New Mexico State University, NM, USA. dbailey@nmsu.eduNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

16916944

Citation

Bailey, C Donovan, et al. "Toward a Global Phylogeny of the Brassicaceae." Molecular Biology and Evolution, vol. 23, no. 11, 2006, pp. 2142-60.
Bailey CD, Koch MA, Mayer M, et al. Toward a global phylogeny of the Brassicaceae. Mol Biol Evol. 2006;23(11):2142-60.
Bailey, C. D., Koch, M. A., Mayer, M., Mummenhoff, K., O'Kane, S. L., Warwick, S. I., ... Al-Shehbaz, I. A. (2006). Toward a global phylogeny of the Brassicaceae. Molecular Biology and Evolution, 23(11), pp. 2142-60.
Bailey CD, et al. Toward a Global Phylogeny of the Brassicaceae. Mol Biol Evol. 2006;23(11):2142-60. PubMed PMID: 16916944.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Toward a global phylogeny of the Brassicaceae. AU - Bailey,C Donovan, AU - Koch,Marcus A, AU - Mayer,Michael, AU - Mummenhoff,Klaus, AU - O'Kane,Steve L,Jr AU - Warwick,Suzanne I, AU - Windham,Michael D, AU - Al-Shehbaz,Ihsan A, Y1 - 2006/08/17/ PY - 2006/8/19/pubmed PY - 2007/1/16/medline PY - 2006/8/19/entrez SP - 2142 EP - 60 JF - Molecular biology and evolution JO - Mol. Biol. Evol. VL - 23 IS - 11 N2 - The Brassicaceae is a large plant family (338 genera and 3,700 species) of major scientific and economic importance. The taxonomy of this group has been plagued by convergent evolution in nearly every morphological feature used to define tribes and genera. Phylogenetic analysis of 746 nrDNA internal transcribed spacer (ITS) sequences, representing 24 of the 25 currently recognized tribes, 146 genera, and 461 species of Brassicaceae, produced the most comprehensive, single-locus-based phylogenetic analysis of the family published to date. Novel approaches to nrDNA ITS analysis and extensive taxonomic sampling offered a test of monophyly for a large complement of the currently recognized tribes and genera of Brassicaceae. In the most comprehensive analysis, tribes Alysseae, Anchonieae plus Hesperideae, Boechereae, Cardamineae, Eutremeae, Halimolobeae, Iberideae, Noccaeeae, Physarieae, Schizopetaleae, Smelowskieae, and Thlaspideae were all monophyletic. Several broadly defined genera (e.g., Draba and Smelowskia) were supported as monophyletic, whereas others (e.g., Sisymbrium and Alyssum) were clearly polyphyletic. Analyses of ITS data identified several problematic sequences attributable to errors in sample identification or database submission. Results from parsimony ratchet and Bayesian analyses recovered little support for the backbone of the phylogeny, suggesting that many lineages of Brassicaceae have undergone rapid radiations that may ultimately be difficult to resolve with any single locus. However, the development of a preliminary supermatrix including the combination of 10 loci for 65 species provides an initial estimate of intertribal relations and suggests that broad application of such a method will provide greater understanding of relationships in the family. SN - 0737-4038 UR - https://www.unboundmedicine.com/medline/citation/16916944/Toward_a_global_phylogeny_of_the_Brassicaceae_ L2 - https://academic.oup.com/mbe/article-lookup/doi/10.1093/molbev/msl087 DB - PRIME DP - Unbound Medicine ER -