Dinoflagellates in evolution. A molecular phylogenetic analysis of large subunit ribosomal RNA

1989 ◽  
Vol 29 (1) ◽  
pp. 40-51 ◽  
Author(s):  
G. Lenaers ◽  
L. Maroteaux ◽  
B. Michot ◽  
M. Herzog
Keyword(s):  
Phylogenetic Analysis ◽  
Ribosomal Rna ◽  
Large Subunit ◽  
Molecular Phylogenetic Analysis ◽  
Molecular Phylogenetic ◽  
Large Subunit Ribosomal Rna

Molecular phylogeny of freshwater snails and limpets (Panpulmonata: Hygrophila)

2020 ◽  
Vol 190 (2) ◽  
pp. 518-531 ◽  
Author(s):  
Ahmed J Saadi ◽  
Angus Davison ◽  
Christopher M Wade
Keyword(s):  
Phylogenetic Analysis ◽  
Molecular Phylogeny ◽  
Ribosomal Rna ◽  
Large Subunit ◽  
Taxonomic Revision ◽  
Monophyletic Group ◽  
Molecular Phylogenetic Analysis ◽  
Freshwater Snails ◽  
Molecular Phylogenetic ◽  
Rna Genes

Abstract We have undertaken a comprehensive molecular phylogenetic analysis of the Hygrophila based on 3112 sites of the large subunit and 5.8S ribosomal RNA genes. A clear basal division between Chilinoidea and Lymnaeoidea is observed. The monophyly of Acroloxidae, Lymnaeidae and Physidae is also well established. However, Planorbidae are not supported as a monophyletic group, because the Bulinidae cluster within Planorbidae. The Amphipepleinae within Lymnaeidae and both Planorbinae and Ancylinae within Planorbidae are strongly supported as monophyletic subfamilies. However, the Aplexinae within Physidae and the Lymnaeinae within Lymnaeidae are not recovered. A new taxonomic revision of the Hygrophila is proposed based on the findings of this molecular phylogeny, and the implications for the evolution of chirality are discussed.

Description of Ektaphelenchoides spondylis n. sp. (Nematoda: Ektaphelenchinae) isolated from Spondylis buprestoides (Coleoptera: Cerambycidae) in Japan

Nematology ◽  
2009 ◽  
Vol 11 (2) ◽  
pp. 181-188 ◽  
Author(s):  
Natsumi Kanzaki ◽  
Robin Giblin-Davis ◽  
Barbara Center
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Large Subunit ◽  
Taxonomic Revision ◽  
Molecular Phylogenetic Analysis ◽  
Molecular Sequence ◽  
Male Ratio ◽  
Female Tail ◽  
Tail Shape ◽  
Molecular Phylogenetic

AbstractEktaphelenchoides spondylis n. sp. is described and figured from Spondylis buprestoides. The new species is characterised by the bipartite stylet conus, male spicule with rounded condylus, blunt rostrum and plate-like cucullus, long postuterine sac and long and smoothly tapering female tail. The new species is almost morphologically identical to E. compsi, but can be distinguished from it by stylet morphology, female tail shape, male ratio (a) and molecular sequence of the D2/D3 expansion segment of the large subunit of ribosomal DNA. In the molecular phylogenetic analysis, E. spondylis n. sp. formed a well supported clade with E. compsi within Ektaphelenchoides. Based upon molecular phylogenetic analysis with one locus, Ektaphelenchoides spp. formed a well supported clade and Ektaphelenchus and Cryptaphelenchus also formed a well supported clade. However, the molecular and morphological information available from our study are insufficient to revise the generic taxonomy of the subfamily. More sampling and an integrated taxonomic revision of the subfamily Ektaphelenchinae are needed.

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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