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Universal Scaling in the Branching of the Tree of Life

AutorHerrada, E. Alejandro ; Tessone, Claudio J.; Klemm, Konstantin ; Eguíluz, Víctor M. ; Hernández-García, Emilio ; Duarte, Carlos M.
Fecha de publicación23-jul-2008
EditorPublic Library of Science
CitaciónPLoS ONE 3(7): e2757
ResumenUnderstanding the patterns and processes of diversification of life in the planet is a key challenge of science. The Tree of Life represents such diversification processes through the evolutionary relationships among the different taxa, and can be extended down to intra-specific relationships. Here we examine the topological properties of a large set of interspecific and intraspecific phylogenies and show that the branching patterns follow allometric rules conserved across the different levels in the Tree of Life, all significantly departing from those expected from the standard null models. The finding of non-random universal patterns of phylogenetic differentiation suggests that similar evolutionary forces drive diversification across the broad range of scales, from macro-evolutionary to micro-evolutionary processes, shaping the diversity of life on the planet.
Descripción6 pages.-- Supplementary material attached: Text S1. Scaling of branch size and cumulative branch size: TreeBASE vs. manually selected data sets.- Table S1. Break-down of the number of analyzed inter- and intra-species trees with respect to taxa.- Fig. S1. Cumulative complementary distribution functions (CCDFs) for branch size (F(A), panel A) and cumulative branch size (F(C), panel B).- Fig. S2. A: An example of an intraspecific phylogenetic tree, B: The allometric scaling plot showing the relationship of cumulative branch size (C) to branch size (A) from each node of that tree.- Fig. S3: Another example of an interspecific phylogenetic tree.
Versión del editorhttp://dx.doi.org/10.1371/journal.pone.0002757
ISSN1932-6203 (Online)
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