scholarly journals MOLECULAR PHYLOGENETIC ANALYSIS OF TWO PROBLEMATIC FRESHWATER MUSSEL GENERA (UNIO AND GONIDEA) AND A RE-EVALUATION OF THE CLASSIFICATION OF NEARCTIC UNIONIDAE (BIVALVIA: PALAEOHETERODONTA: UNIONOIDA)

2002 ◽  
Vol 68 (1) ◽  
pp. 65-71 ◽  
Author(s):  
DANIEL L. GRAF
Keyword(s):  
Phylogenetic Analysis ◽  
Freshwater Mussel ◽  
Molecular Phylogenetic Analysis ◽  
Molecular Phylogenetic

Redefining the generic limits of Winthemia (Diptera : Tachinidae)

2016 ◽  
Vol 30 (3) ◽  
pp. 274 ◽  
Author(s):  
Diego J. Inclán ◽  
John O. Stireman ◽  
Pierfilippo Cerretti
Keyword(s):  
South Africa ◽  
Phylogenetic Analysis ◽  
Systematic Study ◽  
Type Species ◽  
Genetic Evidence ◽  
Molecular Phylogenetic Analysis ◽  
Molecular Phylogenetic ◽  
Phylogenetic Affinities

One of the major problems hindering the systematic study of tachinid flies is that genera are often poorly defined, making it difficult to unambiguously assign species among closely related genera. Within the tribe Winthemiini, an example of this problem is represented by the unstable classification of the Afrotropical species most recently classified as Smidtia capensis (Schiner). This species has been previously assigned to four different genera on the basis of limited examination and evidence. Here, we evaluate the identity and phylogenetic affinities of this species and other members of the tribe Winthemiini using morphological and molecular phylogenetic analysis. We demonstrate that S. capensis actually belongs to the genus Winthemia Robineau-Desvoidy. We also find that Winthemia is paraphyletic with respect to two monotypic genera, Crypsina (type species Crypsina prima Brauer & Bergenstamm) and Hemiwinthemia (type species Hemiwinthemia calva Villeneuve). On the basis of morphological and genetic evidence, we propose to extend the generic limits of Winthemia to include W. londti, sp. nov. (South Africa), W. capensis (Schiner), comb. nov. (South Africa), W. prima (Brauer & Bergenstamm), comb. nov. (China, Japan, Australia) and W. calva (Villeneuve), comb. nov. (D.R. Congo), thus synonymising with Winthemia the generic names Crypsina, syn. nov. and Hemiwinthemia, syn. nov.

Novelties towards a phylogenetic infrageneric classification of Baccharis (Asteraceae, Astereae)

Phytotaxa ◽  
2016 ◽  
Vol 289 (3) ◽  
pp. 285 ◽  
Author(s):  
GUSTAVO HEIDEN ◽  
JOSÉ RUBENS PIRANI
Keyword(s):  
Phylogenetic Analysis ◽  
New Taxa ◽  
New World ◽  
Molecular Phylogenetic Analysis ◽  
New Combinations ◽  
Infrageneric Classification ◽  
Molecular Phylogenetic ◽  
Genus Two

Names of new taxa, new combinations and names at new rank are proposed for subgenera and sections in Baccharis to move towards a phylogenetic infrageneric classification of this New World genus. Two earlier segregated genera and two previously recognised sections are moved to the subgeneric rank (as B. subgen. Coridifoliae, B. subgen. Heterothalamus, B. subgen. Heterothalamulopsis, and B. subgen. Oblongifoliae). Three new combinations and/or names at new rank are proposed for the following sections: B. sect. Axillares (assigned to B. subgen. Baccharis), B. sect. Heterothalamulopsis (assigned to B. subgen. Heterothalamulopsis), and B. sect. Pluricephalae (assigned to B. subgen Coridifoliae). Four new sections are described to accommodate taxa not corresponding to any previously described section: B. sect. Andina and B. sect. Illinitae (assigned to B. subgen. Baccharis), B. sect. Bradeanae (assigned to B. subgen. Heterothalamus), and B. sect. Polifoliae (assigned to B. subgen. Molina). All taxa here recognized correspond to monophyletic groups based on highly supported clades in a recent molecular phylogenetic analysis.

A new subtribal classification of Myrtaceae tribe Chamelaucieae

2020 ◽  
Vol 33 (2) ◽  
pp. 191
Author(s):  
Barbara L. Rye ◽  
Peter G. Wilson ◽  
Margaret M. Heslewood ◽  
Andrew J. Perkins ◽  
Kevin R. Thiele
Keyword(s):  
Phylogenetic Analysis ◽  
Molecular Phylogenetic Analysis ◽  
Morphological Evidence ◽  
New Classification ◽  
Molecular Phylogenetic ◽  
History Of ◽  
Single Genus ◽  
The Creation

A new classification of Myrtaceae tribe Chamelaucieae DC., derived from a molecular phylogenetic analysis based on nr ETS and cp trnK and atpB–rbcL spacer sequences, is presented. Eleven subtribes are recognised, eight of which are new. The currently accepted circumscriptions of subtribes Calytricinae Benth. and ‘Euchamelaucieae Benth.’ (nom. inval.) are retained, with the latter being formally published here as Chamelauciinae Rye & Peter G.Wilson. Subtribe Thryptomeninae Benth. is reduced in size by the creation of the new subtribes Alutinae Rye & Peter G.Wilson and Micromyrtinae Rye & Peter G.Wilson. Subtribe Baeckeinae Schauer is reduced to a single genus, with the excluded genera distributed in the new subtribes Astarteinae Rye & Peter G.Wilson, Hysterobaeckeinae Rye & Peter G.Wilson, Ochrospermatinae Rye & Peter G.Wilson, Rinziinae Rye & Peter G.Wilson and Stenostegiinae Rye & Peter G.Wilson. The history of recognition of the genera and subtribes of Chamelaucieae is outlined and supporting morphological evidence for the new classification discussed.

scholarly journals Molecular Phylogenetic Analysis of the AIG Family in Vertebrates

Genes ◽  
2021 ◽  
Vol 12 (8) ◽  
pp. 1190
Author(s):  
Yuqi Huang ◽  
Minghao Sun ◽  
Lenan Zhuang ◽  
Jin He
Keyword(s):  
Phylogenetic Analysis ◽  
Gene Family ◽  
Functional Characterization ◽  
Vertebrate Evolution ◽  
Molecular Phylogenetic Analysis ◽  
Whole Genome Duplications ◽  
Genome Duplications ◽  
Molecular Phylogenetic ◽  
Duplication Events ◽  
Inducible Genes

Androgen-inducible genes (AIGs), which can be regulated by androgen level, constitute a group of genes characterized by the presence of the AIG/FAR-17a domain in its protein sequence. Previous studies on AIGs demonstrated that one member of the gene family, AIG1, is involved in many biological processes in cancer cell lines and that ADTRP is associated with cardiovascular diseases. It has been shown that the numbers of AIG paralogs in humans, mice, and zebrafish are 2, 2, and 3, respectively, indicating possible gene duplication events during vertebrate evolution. Therefore, classifying subgroups of AIGs and identifying the homologs of each AIG member are important to characterize this novel gene family further. In this study, vertebrate AIGs were phylogenetically grouped into three major clades, ADTRP, AIG1, and AIG-L, with AIG-L also evident in an outgroup consisting of invertebrsate species. In this case, AIG-L, as the ancestral AIG, gave rise to ADTRP and AIG1 after two rounds of whole-genome duplications during vertebrate evolution. Then, the AIG family, which was exposed to purifying forces during evolution, lost or gained some of its members in some species. For example, in eutherians, Neognathae, and Percomorphaceae, AIG-L was lost; in contrast, Salmonidae and Cyprinidae acquired additional AIG copies. In conclusion, this study provides a comprehensive molecular phylogenetic analysis of vertebrate AIGs, which can be employed for future functional characterization of AIGs.

Molecular phylogenetic analysis of dinoflagellate Scrippsiella trochoidea isolated from the East Asian waters

2010 ◽  
Vol 28 (2) ◽  
pp. 323-328 ◽  
Author(s):  
Xianghai Tang ◽  
Rencheng Yu ◽  
Qingchun Zhang ◽  
Yunfeng Wang ◽  
Tian Yan ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
East Asian ◽  
Molecular Phylogenetic Analysis ◽  
Scrippsiella Trochoidea ◽  
Molecular Phylogenetic
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