Multigene Phylogeny of the Green Lineage Reveals the Origin and Diversification of Land Plants

被引:157
作者
Finet, Cedric [1 ,2 ]
Timme, Ruth E. [3 ]
Delwiche, Charles F. [3 ]
Marleta, Ferdinand [4 ]
机构
[1] Univ Wisconsin, Howard Hughes Med Inst, Madison, WI 53706 USA
[2] Univ Wisconsin, Mol Biol Lab, Madison, WI 53706 USA
[3] Univ Maryland, Dept Cell Biol & Mol Genet, College Pk, MD 20742 USA
[4] Univ Aix Marseille 2, CNRS, DIMAR, UMR 6540,Stn Marine Endoume, F-13007 Marseille, France
关键词
CLOSEST LIVING RELATIVES; CHLOROPLAST TUFA GENE; SEED PLANTS; EXTANT GYMNOSPERMS; ANIMAL PHYLOGENY; ALGAE; GENOME; MITOCHONDRIAL; GNETALES; CONIFERS;
D O I
10.1016/j.cub.2010.11.035
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
The Viridiplantae (green plants) include land plants as well as the two distinct lineages of green algae, chlorophytes and charophytes. Despite their critical importance for identifying the closest living relatives of land plants, phylogenetic studies of charophytes have provided equivocal results [1-5]. In addition, many relationships remain unresolved among the land plants, such as the position of mosses, liverworts, and the enigmatic Gnetales. Phylogenomics has proven to be an insightful approach for resolving challenging phylogenetic issues, particularly concerning deep nodes [6-8]. Here we extend this approach to the green lineage by assembling a multilocus data set of 77 nuclear genes (12,149 unambiguously aligned amino acid positions) from 77 taxa of plants. We therefore provide the first multi-gene phylogenetic evidence that Coleochaetales represent the closest living relatives of land plants. Moreover, our data reinforce the early divergence of liverworts and the close relationship between Gnetales and Pinaceae. These results provide a new phylogenetic framework and represent a key step in the evolutionary interpretation of developmental and genomic characters in green plants.
引用
收藏
页码:2217 / 2222
页数:6
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