Studies on the origin and evolution of tetraploid wheats based on the internal transcribed spacer (ITS) sequences of nuclear ribosomal DNA

2002 ◽  
Vol 104 (6) ◽  
pp. 1099-1106 ◽  
Author(s):  
W. Zhang ◽  
L. Qu ◽  
H. Gu ◽  
W. Gao ◽  
M. Liu ◽  
...  
Keyword(s):  
Ribosomal Dna ◽  
Internal Transcribed Spacer ◽  
Its Sequences ◽  
Nuclear Ribosomal Dna ◽  
Origin And Evolution ◽  
Tetraploid Wheats

scholarly journals Molecular phylogenetic analyses of internal transcribed spacer (ITS) sequences of nuclear ribosomal DNA indicate monophyly of the genus Phytolacca L. (Phytolaccaceae)

2015 ◽  
Vol 22 (1) ◽  
pp. 1-8 ◽  
Author(s):  
M. Ajmal Ali ◽  
Joongku Lee ◽  
Soo-Yong Kim ◽  
Sang-Hong Park ◽  
Fahad M.A. Al-Hemaid
Keyword(s):  
Ribosomal Dna ◽  
Internal Transcribed Spacer ◽  
Phylogenetic Analyses ◽  
Its Sequences ◽  
Nuclear Ribosomal Dna ◽  
Phylogenetic Study ◽  
Molecular Evidence ◽  
The Family ◽  
Molecular Phylogenetic ◽  
Plant Taxon

Relationships within the family Phytolaccaceae sensu lato were examined based on internal transcribed spacer (ITS) sequences of nuclear ribosomal DNA (nrDNA). The study revealed Phytolacca L. as taxonomically the most difficult genus in the family with completely unknown phylogeny. Molecular evidence was used from nrDNA ITS sequences of about 90% of the species for maximum parsimony analyses, and the molecular phylogenetic analyses defined a monophyletic Phytolacca. This first molecular phylogenetic study of Phytolacca concludes that the relationships among the species within the genus do not show harmony with the generic classification based on morphology. These results set the stage for a more detailed phylogenetic analysis of Phytolacca.Bangladesh J. Plant Taxon. 22(1): 1­–8, 2015 (June)

Relationships among problematic North American stagnicoline snails (Pulmonata: Lymnaeidae) reinvestigated using nuclear ribosomal DNA internal transcribed spacer sequences

1997 ◽  
Vol 75 (9) ◽  
pp. 1540-1545 ◽  
Author(s):  
E. A. Remigio ◽  
D. Blair
Keyword(s):  
North America ◽  
Ribosomal Dna ◽  
Internal Transcribed Spacer ◽  
Its Region ◽  
Nucleotide Sequences ◽  
Its Sequences ◽  
Nuclear Ribosomal Dna ◽  
Snail Species ◽  
Separate Species ◽  
Internal Transcribed Spacer Sequences

The taxonomic relationships among four stagnicoline snail species from North America were reassessed by analysing nucleotide sequences from their nuclear ribosomal internal transcribed spacer (ITS) region. Three of the species (Stagnicola catascopium, Stagnicola emarginata, and Stagnicola elodes) are representatives of the subgenus Stagnicola s.str. from the northern U.S.A. and the fourth is a closely related Canadian species (Stagnicola caperata) belonging to the subgenus Hinkleyia. Members of the two subgenera differed considerably in their ITS sequences, demonstrating the usefulness of these sequences for distinguishing species from closely related lymnaeid subgenera. In contrast, ITS sequences for the three members of the subgenus Stagnicola s.str. were very similar, which supports an earlier view that they may not be separate species.

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