Phylogenetic relationships and evolutionary history of the diatom genus Gomphoneis

Phycologia ◽  
1989 ◽  
Vol 28 (4) ◽  
pp. 438-454 ◽  
Author(s):  
John P. Kociolek ◽  
Eugene F. Stoermer
Keyword(s):  
Phylogenetic Relationships ◽  
Evolutionary History ◽  
Diatom Genus ◽  
History Of

scholarly journals Early diversification and permeable species boundaries in the Mediterranean firs

2019 ◽  
Vol 125 (3) ◽  
pp. 495-507 ◽  
Author(s):  
Francisco Balao ◽  
María Teresa Lorenzo ◽  
José Manuel Sánchez-Robles ◽  
Ovidiu Paun ◽  
Juan Luis García-Castaño ◽  
...  
Keyword(s):  
Phylogenetic Relationships ◽  
Evolutionary History ◽  
Taxonomic Status ◽  
Nucleotide Polymorphisms ◽  
Single Nucleotide ◽  
Early Diversification ◽  
Genome Wide ◽  
History Of ◽  
The Mediterranean ◽  
Independent Species

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.

WHEAT EVOLUTION

1995 ◽  
Vol 43 (2) ◽  
pp. 85-98 ◽  
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.

Phylogenetic relationships and evolutionary history of the Mesoamerican endemic freshwater fish family Profundulidae (Cyprinodontiformes: Actinopterygii)

2016 ◽  
Vol 94 ◽  
pp. 242-251 ◽  
Author(s):  
Felipe Morcillo ◽  
Claudia Patricia Ornelas-García ◽  
Lourdes Alcaraz ◽  
Wilfredo A. Matamoros ◽  
Ignacio Doadrio
Keyword(s):  
Freshwater Fish ◽  
Phylogenetic Relationships ◽  
Evolutionary History ◽  
Fish Family ◽  
History Of

scholarly journals Integrated phylogenomic and fossil evidence of stick and leaf insects (Phasmatodea) reveal a Permian–Triassic co-origination with insectivores

2020 ◽  
Vol 7 (11) ◽  
pp. 201689
Author(s):  
Erik Tihelka ◽  
Chenyang Cai ◽  
Mattia Giacomelli ◽  
Davide Pisani ◽  
Philip C. J. Donoghue
Keyword(s):  
Late Cretaceous ◽  
Molecular Clock ◽  
Phylogenetic Relationships ◽  
Evolutionary History ◽  
Plant Tissues ◽  
Transcriptomic Data ◽  
Insect Order ◽  
Fossil Evidence ◽  
History Of ◽  
Cretaceous Terrestrial Revolution

Stick and leaf insects (Phasmatodea) are a distinctive insect order whose members are characterized by mimicking various plant tissues such as twigs, foliage and bark. Unfortunately, the phylogenetic relationships among phasmatodean subfamilies and the timescale of their evolution remain uncertain. Recent molecular clock analyses have suggested a Cretaceous–Palaeogene origin of crown Phasmatodea and a subsequent Cenozoic radiation, contrasting with fossil evidence. Here, we analysed transcriptomic data from a broad diversity of phasmatodeans and, combined with the assembly of a new suite of fossil calibrations, we elucidate the evolutionary history of stick and leaf insects. Our results differ from recent studies in the position of the leaf insects (Phylliinae), which are recovered as sister to a clade comprising Clitumninae, Lancerocercata, Lonchodinae, Necrosciinae and Xenophasmina . We recover a Permian to Triassic origin of crown Phasmatodea coinciding with the radiation of early insectivorous parareptiles, amphibians and synapsids. Aschiphasmatinae and Neophasmatodea diverged in the Jurassic–Early Cretaceous. A second spur in origination occurred in the Late Cretaceous, coinciding with the Cretaceous Terrestrial Revolution, and was probably driven by visual predators such as stem birds (Enantiornithes) and the radiation of angiosperms.

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