Results 251 to 260 of about 145,655 (292)
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Why Nuclear Ribosomal DNA Spacers (ITS) Tell Different Stories in Quercus
Molecular Phylogenetics and Evolution, 2001The molecular systematics of Quercus (Fagaceae) was recently assessed by two teams using independently generated ITS sequences. Although the results disagreed in several remarkable features, the phylogenetic trees for either hypothesis were highly supported by bootstrap resampling. We have reanalyzed the ITS sequences used by both teams (eight taxa) to
M, Mayol, J A, Rosselló
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Restriction analysis of the nontranscribed spacers of Xenopus laevis ribosomal DNA
Cell, 1977Abstract We have studied sequence organization in the nontranscribed spacer regions of four cloned fragments of Xenopus laevis ribosomal DNA. Each clone contains a spacer of different length. The distribution of cleavage sites for several restriction endonucleases have been investigated in these spacers.
P, Botchan, R H, Reeder, I B, Dawid
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Complex structure of the ribosomal DNA spacer of Cucumis sativus (cucumber)
Molecular and General Genetics MGG, 1988The nuclear 18 S, 5.8 S and 25 S ribosomal RNA genes (rDNA) of Cucumis sativus (cucumber) occur in at least four different repeat types of 10.2, 10.5, 11.5, and 12.5 kb in length. The intergenic spacer of these repeats has been cloned and characterized with respect to sequence organization.
M, Ganal, R, Torres, V, Hemleben
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The Cucurbita maxima ribosomal DNA intergenic spacer has a complex structure
Gene, 1989The nucleotide (nt) sequence of the 5508-nt intergenic spacer (IGS), between the 25S- and the 18S-coding regions of Cucurbita maxima rDNA, was determined. The fragment sequenced is 6142 nt long and includes 472 nt of 25S- and 162 nt of 18S-coding regions.
R J, Kelly, A, Siegel
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Cell-Specific Ribosomal DNA Spacer Variability in Human Urothelial Carcinoma Cultures
Journal of Urology, 1987Length variation of a ribosomal DNA "spacer" region in four chromosomally characterized transitional cell carcinoma cultures was analyzed by restriction endonuclease cleavage and Southern blotting. Cell lines with relative karyotypic conservation, such as UM-UC-2 (modal chromosome number 48, four marker chromosomes) demonstrate little change in the ...
G N, Wilson, M, Dasouki, H B, Grossman
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Ribosomal DNA ITS-1 Intergenic Spacer Polymorphism in Triatomines (Triatominae, Heteroptera)
Biochemical Genetics, 2005The length polymorphism of ribosomal DNA ITS-1 intergenic spacer was analyzed in eight species of triatomines belonging to Triatoma, Rhodnius, and Panstrongylus genera. The analyzed species were Rhodnius domesticus, R. neivai, R. robustus, Triatoma brasiliensis, T. infestans, T. vitticeps, Panstrongylus megistus, and P. herreri.
Tartarotti, E., Ceron, C. R.
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The Journal of Parasitology, 2000
An internal transcribed spacer (ITS2) sequence between the 5.8S and 28S rRNA genes was used to estimate the phyletic relationships among Ixodes spp. tick vectors of Lyme disease-causing Borrelia spirochetes. Analysis indicates that Borrelia burgdorferi sensu lato species associated with Lyme disease are found mainly in ticks of the Ixodes ricinus ...
M, Fukunaga +4 more
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An internal transcribed spacer (ITS2) sequence between the 5.8S and 28S rRNA genes was used to estimate the phyletic relationships among Ixodes spp. tick vectors of Lyme disease-causing Borrelia spirochetes. Analysis indicates that Borrelia burgdorferi sensu lato species associated with Lyme disease are found mainly in ticks of the Ixodes ricinus ...
M, Fukunaga +4 more
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The internal transcribed spacer of nuclear ribosomal DNA in the gymnosperm Gnetum
Molecular Phylogenetics and Evolution, 2005We analyze the structure of the internal transcribed spacers ITS1 and ITS2 of the nuclear ribosomal DNA in the gymnosperm Gnetum, using a phylogenetic framework derived mainly from an intron in the nuclear low-copy LEAFY gene. Gnetum comprises 25-35 species in South America, Africa, and Asia, of which we sampled 16, each with two to six clones ...
Hyosig, Won, Susanne S, Renner
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Study of the 16S–23S ribosomal DNA internal spacer of Coxiella burnetii
European Journal of Epidemiology, 1997The complete 16S-23S ribosomal DNA (rDNA) internal transcribed spacer (ITS) of 22 isolates of the obligate intracellular bacterium Coxiella burnetii, the agent of Q fever, were amplified by the polymerase chain reaction (PCR) and sequenced using an automated laser fluorescent DNA sequencer.
A, Stein +3 more
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Sequence Variation in the Ribosomal DNA Internal Transcribed Spacer of Tridacna crocea
Marine Biotechnology, 2000DNA-based genetic markers are needed to augment existing allozyme markers in the assessment of genetic diversity of wild giant clam populations. The dearth of polymorphic mitochondrial DNA regions amplified from known universal polymerase chain reaction (PCR) primers has led us to search other regions of the genome for viable sources of DNA ...
E T, Yu, M A, Juinio-Meñez, V D, Monje
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