scholarly journals Evolutionary process of Hordeum brachyantherum 6x and related tetraploid species revealed by nuclear DNA sequences

2009 ◽  
Vol 59 (5) ◽  
pp. 611-616 ◽  
Author(s):  
Takao Komatsuda ◽  
Björn Salomon ◽  
Roland von Bothmer
Keyword(s):  
Dna Sequences ◽  
Nuclear Dna ◽  
Evolutionary Process ◽  
Tetraploid Species

scholarly journals Phylogenetic relationships of Cranichidinae and Prescottiinae (Orchidaceae, Cranichideae) inferred from plastid and nuclear DNA sequences

2009 ◽  
Vol 104 (3) ◽  
pp. 403-416 ◽  
Author(s):  
Gerardo A. Salazar ◽  
Lidia I. Cabrera ◽  
Santiago Madriñán ◽  
Mark W. Chase
Keyword(s):  
Dna Sequences ◽  
Phylogenetic Relationships ◽  
Nuclear Dna

Phylogenetics and evolution of the aphid genus Uroleucon based on mitochondrial and nuclear DNA sequences

1999 ◽  
Vol 24 (1) ◽  
pp. 85-93 ◽  
Author(s):  
Nancy A. Moran ◽  
Matthew E. Kaplan ◽  
Michael J. Gelsey ◽  
Troy G. Murphy ◽  
Edwin A. Scholes
Keyword(s):  
Dna Sequences ◽  
Nuclear Dna

scholarly journals Evolutionary Relationship between Two Firefly Species,Curtos costipennisandC. okinawanus(Coleoptera, Lampyridae), in the Ryukyu Islands of Japan Revealed by the Mitochondrial and Nuclear DNA Sequences

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Masahiko Muraji ◽  
Norio Arakaki ◽  
Shigeo Tanizaki
Keyword(s):  
Dna Sequences ◽  
Evolutionary History ◽  
Nuclear Dna ◽  
Evolutionary Relationship ◽  
Early Pleistocene ◽  
Ryukyu Islands ◽  
Mtdna Sequences ◽  
Northern Half ◽  
The Ryukyu Islands ◽  
History Of

The phylogenetic relationship, biogeography, and evolutionary history of closely related two firefly species,Curtos costipennisandC. okinawanus, distributed in the Ryukyu Islands of Japan were examined based on nucleotide sequences of mitochondrial (2.2 kb long) and nuclear (1.1-1.2 kb long) DNAs. In these analyses, individuals were divided among three genetically distinct local groups,C. costipennisin the Amami region,C. okinawanusin the Okinawa region, andC. costipennisin the Sakishima region. Their mtDNA sequences suggested that ancestralC. costipennispopulation was first separated between the Central and Southern Ryukyu areas, and the northern half was then subdivided betweenC. costipennisin the Amami andC. okinawanusin the Okinawa. The application of the molecular evolutionary clocks of coleopteran insects indicated that their vicariance occurred 1.0–1.4 million years ago, suggesting the influence of submergence and subdivision of a paleopeninsula extending between the Ryukyu Islands and continental China through Taiwan in the early Pleistocene.

scholarly journals Molecular phylogeny of Kazimierzus Plisko, 2006 (Clitellata, Kazimierzidae) from the Western and Northern Cape Province inferred from mitochondrial DNA sequences

2020 ◽  
Vol 61 (2) ◽  
pp. 83-92
Author(s):  
Thembeka Clara Nxele ◽  
Jadwiga Danuta Plisko ◽  
Tarombera Mwabvu ◽  
Oliver Tendayi Zishiri
Keyword(s):  
Dna Sequences ◽  
Nuclear Dna ◽  
Integrative Taxonomy ◽  
Cryptic Diversity ◽  
Undescribed Species ◽  
Mitochondrial Marker ◽  
Phylogenetic Reconstructions ◽  
Northern Cape ◽  
Tree Building ◽  
Close Relatedness

Species identification of earthworms using morphology can be challenging and inconclusive as homoplasy in many characters is high. The use of molecular DNA technology, such as the use of conserved regions in mtDNA and nuclear DNA has unravelled the phylogenetic background of several earthworm species. The current study utilised the cytochrome c oxidase subunit I (COI) mitochondrial marker to reconstruct the phylogeny of Kazimierzus Plisko, 2006 species from the Western and Northern Cape provinces of South Africa. Phylogenetic reconstructions were implemented using Bayesian Inference, as well as Maximum Likelihood. Both tree building methods adhered to the monophyly of the majority of the taxa. Results showed that species fell into two clades and validated eleven currently known Kazimierzus species (K. circulatus (Plisko, 1998), K. franciscus (Pickford, 1975), K. guntheri (Pickford, 1975), K. hamerae (Plisko, 1998), K. kleinoodi Nxele & Plisko, 2017, K. nietvoorbiji Nxele & Plisko, 2017, K. nieuwoudtvillensis Nxele & Plisko, 2017, K. occidualis (Plisko, 1998), K. pearsonianus (Pickford, 1975), K. phumlani Nxele & Plisko, 2017, K. sophieae (Plisko, 2002)). Cryptic diversity is evident in K. occidualis with genetic divergence greater than 12% amongst populations. Kazimierzus franciscus and K. ljungstroemi (Pickford, 1975) have a low genetic variability suggesting close relatedness or probably conspecificity. A group of specimens from Clanwilliam are morphologically identical to K. sophieae, but are genetically distinct and may belong to undescribed species. This study demonstrates the importance of integrative taxonomy in earthworms in order to present reliable taxonomic and biogeographic data.

scholarly journals Discovery of a new family of amphibians from northeast India with ancient links to Africa

2012 ◽  
Vol 279 (1737) ◽  
pp. 2396-2401 ◽  
Author(s):  
Rachunliu G. Kamei ◽  
Diego San Mauro ◽  
David J. Gower ◽  
Ines Van Bocxlaer ◽  
Emma Sherratt ◽  
...  
Keyword(s):  
Dna Sequences ◽  
Nuclear Dna ◽  
Phylogenetic Analyses ◽  
Sister Group ◽  
Northeast India ◽  
Sister Group Relationship ◽  
New Family ◽  
Ancient Lineage ◽  
Molecular Phylogenetic ◽  
Threatened Habitats

The limbless, primarily soil-dwelling and tropical caecilian amphibians (Gymnophiona) comprise the least known order of tetrapods. On the basis of unprecedented extensive fieldwork, we report the discovery of a previously overlooked, ancient lineage and radiation of caecilians from threatened habitats in the underexplored states of northeast India. Molecular phylogenetic analyses of mitogenomic and nuclear DNA sequences, and comparative cranial anatomy indicate an unexpected sister-group relationship with the exclusively African family Herpelidae. Relaxed molecular clock analyses indicate that these lineages diverged in the Early Cretaceous, about 140 Ma. The discovery adds a major branch to the amphibian tree of life and sheds light on both the evolution and biogeography of caecilians and the biotic history of northeast India—an area generally interpreted as a gateway between biodiversity hotspots rather than a distinct biogeographic unit with its own ancient endemics. Because of its distinctive morphology, inferred age and phylogenetic relationships, we recognize the newly discovered caecilian radiation as a new family of modern amphibians.

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