Seeds of a universal tree

Nature ◽  
1991 ◽  
Vol 350 (6314) ◽  
pp. 106-107 ◽  
Author(s):  
David Penny ◽  
Charles J. O'Kelly
Keyword(s):  
Universal Tree

The Rooting of the Universal Tree of Life Is Not Reliable

1999 ◽  
Vol 49 (4) ◽  
pp. 509-523 ◽  
Author(s):  
Hervé Philippe ◽  
Patrick Forterre
Keyword(s):  
Tree Of Life ◽  
Universal Tree

scholarly journals A universal tree-based network with the minimum number of reticulations

2018 ◽  
Vol 250 ◽  
pp. 357-362 ◽  
Author(s):  
Magnus Bordewich ◽  
Charles Semple
Keyword(s):  
Universal Tree ◽  
Minimum Number

scholarly journals A Phylogenomic Census of Molecular Functions Identifies Modern Thermophilic Archaea as the Most Ancient Form of Cellular Life

Archaea ◽  
2014 ◽  
Vol 2014 ◽  
pp. 1-15 ◽  
Author(s):  
Arshan Nasir ◽  
Kyung Mo Kim ◽  
Gustavo Caetano-Anollés
Keyword(s):  
Gene Ontology ◽  
Functional Diversity ◽  
Phylogenetic Trees ◽  
Free Living ◽  
Universal Tree ◽  
Cellular Life ◽  
Molecular Functions ◽  
Go Terms ◽  
Molecular Characters ◽  
Thermophilic Archaea

The origins of diversified life remain mysterious despite considerable efforts devoted to untangling the roots of the universal tree of life. Here we reconstructed phylogenies that described the evolution of molecular functions and the evolution of species directly from a genomic census of gene ontology (GO) definitions. We sampled 249 free-living genomes spanning organisms in the three superkingdoms of life, Archaea, Bacteria, and Eukarya, and used the abundance of GO terms as molecular characters to produce rooted phylogenetic trees. Results revealed an early thermophilic origin of Archaea that was followed by genome reduction events in microbial superkingdoms. Eukaryal genomes displayed extraordinary functional diversity and were enriched with hundreds of novel molecular activities not detected in the akaryotic microbial cells. Remarkably, the majority of these novel functions appeared quite late in evolution, synchronized with the diversification of the eukaryal superkingdom. The distribution of GO terms in superkingdoms confirms that Archaea appears to be the simplest and most ancient form of cellular life, while Eukarya is the most diverse and recent.

scholarly journals Semantically-Aligned Universal Tree-Structured Solver for Math Word Problems

2020 ◽  
Author(s):  
Jinghui Qin ◽  
Lihui Lin ◽  
Xiaodan Liang ◽  
Rumin Zhang ◽  
Liang Lin
Keyword(s):  
Word Problems ◽  
Universal Tree

Universal tree encoding for speech

1981 ◽  
Vol 27 (1) ◽  
pp. 31-40 ◽  
Author(s):  
Y. Matsuyama ◽  
R. Gray
Keyword(s):  
Universal Tree
Sign in / Sign up

Export Citation Format

Share Document