Resolving the phylogenetic relationships and evolutionary history of the East Asian endemic genus Rodgersia (Saxifragaceae) using multilocus data

Abstract Background and Aims Inferring the evolutionary relationships of species and their boundaries is critical in order to understand patterns of diversification and their historical drivers. Despite Abies (Pinaceae) being the second most diverse group of conifers, the evolutionary history of Circum-Mediterranean firs (CMFs) remains under debate. Methods We used restriction site-associated DNA sequencing (RAD-seq) on all proposed CMF taxa to investigate their phylogenetic relationships and taxonomic status. Key Results Based on thousands of genome-wide single nucleotide polymorphisms (SNPs), we present here the first formal test of species delimitation, and the first fully resolved, complete species tree for CMFs. We discovered that all previously recognized taxa in the Mediterranean should be treated as independent species, with the exception of Abies tazaotana and Abies marocana. An unexpectedly early pulse of speciation in the Oligocene–Miocene boundary is here documented for the group, pre-dating previous hypotheses by millions of years, revealing a complex evolutionary history encompassing both ancient and recent gene flow between distant lineages. Conclusions Our phylogenomic results contribute to shed light on conifers’ diversification. Our efforts to resolve the CMF phylogenetic relationships help refine their taxonomy and our knowledge of their evolution.

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WHEAT EVOLUTION

Israel Journal of Plant Sciences ◽

10.1080/07929978.1995.10676595 ◽

1995 ◽

Vol 43 (2) ◽

pp. 85-98 ◽

Cited By ~ 44

Author(s):

Adina Breiman ◽

Dan Graur

Keyword(s):

Phylogenetic Relationships ◽

Evolutionary History ◽

Wild Relatives ◽

Wheat Species ◽

Polyploid Species ◽

Wheat Evolution ◽

History Of ◽

Nuclear Genomes ◽

Evolutionary Consequences ◽

Independent Evolutionary History

Many wild and cultivated wheat species are amphidiploid, i.e., they are polyploid species containing two or more distinct nuclear genomes, each with its own independent evolutionary history, but whose genetic behavior resembles that of diploids. Amphidiploidy has important evolutionary consequences in wheat. Since the beginning of this century different methods have been employed to identify the diploid donors of the coexisting genomes in the polyploids. To date, several of the genomic donors have been identified, and the search for the others has been narrowed down considerably. Molecular methodologies that are being increasingly used in studies aimed at reconstructing the evolutionary history of wheat species and their wild relatives have resolved many of the phylogenetic relationships among the various taxa.

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Phylogenetic relationships and evolutionary history of the reef fish family Labridae

Molecular Phylogenetics and Evolution ◽

10.1016/j.ympev.2005.02.001 ◽

2005 ◽

Vol 36 (2) ◽

pp. 370-390 ◽

Cited By ~ 177

Author(s):

Mark W. Westneat ◽

Michael E. Alfaro

Keyword(s):

Reef Fish ◽

Phylogenetic Relationships ◽

Evolutionary History ◽

Fish Family ◽

History Of

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Origin and evolution of the Yangtze River reconstructed from the largest molecular phylogeny of Cyprinidae

10.21203/rs.3.rs-145035/v3 ◽

2021 ◽

Author(s):

Feng Chen ◽

Ge Xue ◽

Yeke Wang ◽

Hucai Zhang ◽

Peter D. Clift ◽

...

Keyword(s):

Molecular Phylogeny ◽

East Asia ◽

Time Resolution ◽

Yangtze River ◽

Evolutionary History ◽

East Asian ◽

The Yangtze River ◽

Origin And Evolution ◽

History Of ◽

Lacustrine Ecosystem

Abstract The Yangtze River is the longest river in Asia, but its evolutionary history has long been debated. So far no robust biological evidences can be found to crack this mystery. Here we reconstruct spatiotemporal and diversification dynamics of endemic East Asian cyprinids based on a largest molecular phylogeny of Cyprinidae, including 1420 species, and show that their ancestors laying adhesive eggs were distributed in southern East Asia before ~24 Ma, subsequently dispersed to the Yangtze River to spawn semi-buoyant eggs at ~19 Ma. This indicates that the Yangtze River diverted eastward around the Oligocene-Miocene boundary. Some of these cyprinids evolved again into fishes producing adhesive eggs at ~13 Ma, together with a peaked net diversification rate, indicating that the river formed a potamo-lacustrine ecosystem during the Mid-Miocene. Our reconstruction of the history of the Yangtze River has higher time resolution and much better continuity than those deriving from geological studies.

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