scholarly journals Reconstructing the Phylogeny ofCapsosiphon fulvescens(Ulotrichales, Chlorophyta) from Korea Based onrbcL and 18S rDNA Sequences

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Sang-Mi Sun ◽  
Seung Hwan Yang ◽  
Kirill S. Golokhvast ◽  
Bao Le ◽  
Gyuhwa Chung
Keyword(s):  
Phylogenetic Tree ◽  
18S Rdna ◽  
Phylogenetic Trees ◽  
Economic Value ◽  
Phylogenetic Position ◽  
Therapeutic Effects ◽  
Filamentous Green Algae ◽  
Rdna Sequences ◽  
18S Rdna Sequences ◽  
Taxonomic Studies

Capsosiphon fulvescensis a filamentous green algae in the class Ulvophyceae. It has been consumed as food with unique flavor and soft texture to treat stomach disorders and hangovers, and its economic value justifies studying its nutritional and potential therapeutic effects. In contrast to these applications, only a few taxonomic studies have been conducted onC. fulvescens. In particular, classification and phylogenetic relationships of theC. fulvescensbelow the order level are controversial. To determine its phylogenetic position in the class, we usedrbcL and 18S rDNA sequences as molecular markers to construct phylogenetic trees. The amplifiedrbcL and 18S rDNA sequences from 4C. fulvescensisolates (Jindo, Jangheung, Wando, and Koheung, Korea) were used for phylogenetic analysis by employing three different phylogenetic methods: neighbor joining (NJ), maximum parsimony (MP), and maximum likelihood (ML). TherbcL phylogenetic tree showed that all taxa in the order Ulvales were clustered as a monophyletic group and resolved the phylogenetic position ofC. fulvescensin the order Ulotrichales. The significance of our study is that the 18S rDNA phylogenetic tree shows the detailed taxonomic position ofC. fulvescens. In our result,C. fulvescensis inferred as a member of Ulotrichaceae, along withUrosporaandAcrosiphonia.

Eimeria trichosuri: Phylogenetic position of a marsupial coccidium, based on 18S rDNA sequences

2009 ◽  
Vol 122 (2) ◽  
pp. 165-168 ◽  
Author(s):  
M.L. Power ◽  
C. Richter ◽  
S. Emery ◽  
J. Hufschmid ◽  
M.R. Gillings
Keyword(s):  
18S Rdna ◽  
Phylogenetic Position ◽  
Rdna Sequences ◽  
18S Rdna Sequences

scholarly journals Phylogenetic position of Oxygyne shinzatoi (Burmanniaceae) inferred from 18S rDNA sequences

2008 ◽  
Vol 121 (4) ◽  
pp. 449-449
Author(s):  
Jun Yokoyama ◽  
Yayoi Koizumi ◽  
Masatsugu Yokota ◽  
Hirokazu Tsukaya
Keyword(s):  
18S Rdna ◽  
Phylogenetic Position ◽  
Rdna Sequences ◽  
18S Rdna Sequences

Evolutionary relationships between 15 Plasmodium species from New and Old World primates (including humans): a 18S rDNA cladistic analysis

Parasitology ◽  
2004 ◽  
Vol 129 (6) ◽  
pp. 677-684 ◽  
Author(s):  
M. C. LECLERC ◽  
J. P. HUGOT ◽  
P. DURAND ◽  
F. RENAUD
Keyword(s):  
18S Rdna ◽  
Phylogenetic Trees ◽  
World Monkey ◽  
Cladistic Analysis ◽  
Plasmodium Species ◽  
African Species ◽  
Old World ◽  
Rdna Sequences ◽  
18S Rdna Sequences ◽  
Group 3

We present a new phylogenetic analysis of 15 primate Plasmodium species based on 18S rDNA sequences including new sequences of Plasmodium coatneyi, P. fieldi, P. gonderi, P. hylobati and P. simium. The results are discussed in the context of the parasite host species and their geographical distribution. Contrary to other phylogenies constructed with this 18S rDNA molecule, we observed that the topology of phylogenetic trees was not affected either by the quality of the nucleotide matrices, or by the species present in the outgroup. This analysis showed the following. (1) The polyphyly of human Plasmodium is confirmed. (2) The monophyly of Plasmodium from Old World monkeys is confirmed by the new added sequences and P. gonderi, an African species, possibly could be at the root of this group. (3) The most parsimonious biogeographical hypothesis is that P. vivax originated in Asia; thus, its related species P. simium appears to be derived through a transfer from the human P. vivax to New World monkey species in South America. (4) Sampling efforts of non-human primate Plasmodium could permit improvement of the knowledge of primate Plasmodium phylogeny and also consideration of the risks of malaria emergence from monkey reservoirs.

Monophyly of the family Desmoscolecidae (Nematoda, Demoscolecida) and Its Phylogenetic position inferred from 18S rDNA sequences

2009 ◽  
Vol 27 (5) ◽  
pp. 515-523 ◽  
Author(s):  
Ui Wook Hwang ◽  
Eun Hwa Choi ◽  
Dong Sung Kim ◽  
Wilfrida Decraemer ◽  
Cheon Young Chang
Keyword(s):  
18S Rdna ◽  
Phylogenetic Position ◽  
Rdna Sequences ◽  
The Family ◽  
18S Rdna Sequences

Phylogenetic position of the small solitary phaeodarians (Radiolaria) based on 18S rDNA sequences by single cell PCR analysis

2006 ◽  
Vol 59 (2) ◽  
pp. 104-114 ◽  
Author(s):  
T. Yuasa ◽  
O. Takahashi ◽  
J.K. Dolven ◽  
S. Mayama ◽  
A. Matsuoka ◽  
...  
Keyword(s):  
Single Cell ◽  
18S Rdna ◽  
Phylogenetic Position ◽  
Pcr Analysis ◽  
Single Cell Pcr ◽  
Rdna Sequences ◽  
18S Rdna Sequences

scholarly journals Annulonemertes (phylum Nemertea): when segments do not count

2007 ◽  
Vol 3 (5) ◽  
pp. 570-573 ◽  
Author(s):  
Per Sundberg ◽  
Malin Strand
Keyword(s):  
18S Rdna ◽  
Phylogenetic Position ◽  
Rdna Sequences ◽  
18S Rdna Sequences

We estimated the phylogenetic position of the pseudosegmented ribbon worm Annulonemertes minusculus to test proposed evolutionary hypotheses to explain these body constrictions. The analysis is based on 18S rDNA sequences and shows that the species belongs to an apomorphic clade of hoplonemertean species. The segmentation has no phylogenetic bearing as previously discussed, but is a derived character probably coupled to the species' interstitial habitat.

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