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EnglishCorrect rooting of the angiosperm radiation is both challenging and necessary for understanding the origins and evolution of physiological and phenotypic traits in flowering plants. The problem is known to be difficult due to the large genetic distance separating flowering plants from other seed plants and the sparse taxon sampling among basal angiosperms. Here, we provide further evidence for concern over substitution model misspecification in analyses of chloroplast DNA sequences. We show that support for Amborella as the sole representative of the most basal angiosperm lineage is founded on sequence site patterns poorly described by time-reversible substitution models. Improving the fit between sequence data and substitution model identifies Trithuria, Nymphaeaceae, and Amborella as surviving relatives of the most basal lineage of flowering plants. This finding indicates that aquatic and herbaceous species dominate the earliest extant lineage of flowering plants.
Goremykin, V.; Nikiforova, S.; Biggs, P.J.; Zhong, B.; Delange, P.; Martin, W.; Woetzel, S.; Atherton, R.A.; Mclenachan, P.A.; Lockhart, P.J. (2013). The evolutionary root of flowering plants. SYSTEMATIC BIOLOGY, 62 (1): 50-61. doi: 10.1093/sysbio/sys070 handle: http://hdl.handle.net/10449/32250
| Citation: | Goremykin, V.; Nikiforova, S.; Biggs, P.J.; Zhong, B.; Delange, P.; Martin, W.; Woetzel, S.; Atherton, R.A.; Mclenachan, P.A.; Lockhart, P.J. (2013). The evolutionary root of flowering plants. SYSTEMATIC BIOLOGY, 62 (1): 50-61. doi: 10.1093/sysbio/sys070 handle: http://hdl.handle.net/10449/32250 | |
| Internal authors: | ||
| Organization unit: | CRI [2011-01 - 2016-01]: COMPUTATIONAL BIOLOGY | |
| Authors: | Goremykin, V.; Nikiforova, S.; Biggs, P.J.; Zhong, B.; Delange, P.; Martin, W.; Woetzel, S.; Atherton, R.A.; Mclenachan, P.A.; Lockhart, P.J. | |
| Title: | The evolutionary root of flowering plants | |
| Journal: | SYSTEMATIC BIOLOGY | |
| Issue Date: | 2013 | |
| Scientific Disciplinary Area: | Settore AGR/07 - GENETICA AGRARIA | |
| Keywords ENG: | Trithuria inconspicua Chloroplast genomes Angiosperm origins Heterotachy Base compositional heterogeneity Data model fit | |
| Language: | English | |
| IF: | With Impact Factor ISI | |
| Publication status: | Published | |
| Nature of content: | Articolo in rivista/Article | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1093/sysbio/sys070 | |
| Appears in Collections: | 01 - Journal article |
Files in This Item:
| File | Description | Type | License | |
|---|---|---|---|---|
| Syst_Biol-2013-Goremykin-50-61.pdf | N/A | Tutti i diritti riservati (All rights reserved) | Open AccessView/Open |
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