Analysis of chromosomes and ribosomal RNA genes in parasexual hybrids ofNicotiana

PROTOPLASMA ◽  
1984 ◽  
Vol 121 (3) ◽  
pp. 228-231 ◽  
Author(s):  
D. S. Brar ◽  
M. Ono ◽  
S. Kobayashi ◽  
H. Uchimiya ◽  
H. Harada
Keyword(s):  
Ribosomal Rna ◽  
Ribosomal Rna Genes ◽  
Rna Genes

Structure and variation in ribosomal RNA genes of pea

1987 ◽  
Vol 8 (1) ◽  
pp. 3-12 ◽  
Author(s):  
R. A. Jorgensen ◽  
R. E. Cuellar ◽  
W. F. Thompson ◽  
T. A. Kavanagh
Keyword(s):  
Ribosomal Rna ◽  
Ribosomal Rna Genes ◽  
Rna Genes

Cytogenetic Mapping of H1 Histone and Ribosomal RNA Genes in Hybrids between Catfish SpeciesPseudoplatystoma corruscansandPseudoplatystoma reticulatum

2013 ◽  
Vol 139 (2) ◽  
pp. 102-106 ◽  
Author(s):  
D.T. Hashimoto ◽  
M.A. Ferguson-Smith ◽  
W. Rens ◽  
F.D. Prado ◽  
F. Foresti ◽  
...  
Keyword(s):  
Ribosomal Rna ◽  
Ribosomal Rna Genes ◽  
Cytogenetic Mapping ◽  
H1 Histone ◽  
Rna Genes

Ribosomal RNA Genes ofPneumocystis carinii

1989 ◽  
Vol 36 ◽  
pp. 18s-20s ◽  
Author(s):  
JEFFREY C. EDMAN ◽  
JOSEPH A. KOVACS ◽  
HENRY MASUR ◽  
DANIEL V. SANTI ◽  
HILLE J. EL WOOD ◽  
...  
Keyword(s):  
Ribosomal Rna ◽  
Ribosomal Rna Genes ◽  
Rna Genes

Ribosomal RNA Genes of Pneumocystis carinii

1989 ◽  
Vol 36 (1) ◽  
pp. 18S-20S ◽  
Author(s):  
JEFFREY C. EDMAN ◽  
JOSEPH A. KOVACS ◽  
HENRY MASUR ◽  
DANIEL V. SANTI ◽  
HILLE J. ELWOOD ◽  
...  
Keyword(s):  
Ribosomal Rna ◽  
Pneumocystis Carinii ◽  
Ribosomal Rna Genes ◽  
Rna Genes

A study on nucleolar DNA: isolation of DNA from fibrillar components and ultrastructural localization of different DNA probes

1993 ◽  
Vol 104 (4) ◽  
pp. 1199-1205 ◽  
Author(s):  
P. Hozak ◽  
C. Schofer ◽  
J. Sylvester ◽  
F. Wachtler
Keyword(s):  
Ribosomal Rna ◽  
Sertoli Cells ◽  
Ultrastructural Localization ◽  
Ribosomal Rna Genes ◽  
Border Region ◽  
Dense Fibrillar Component ◽  
Mitotic Chromosomes ◽  
Electron Microscopic ◽  
Fibrillar Component ◽  
Rna Genes

The nature and localization of DNA contained in the fibrillar centres and the dense fibrillar component (the fibrillar complex) in the nucleoli, was studied in human LEP cells, Sertoli cells, spermatogonia A and in mitotic chromosomes of stimulated lymphocytes. A novel procedure for isolating the intact fibrillar complex from LEP cells was used; the complex contains DNA that hybridizes to secondary constrictions of mitotic chromosomes and to 28 S rDNA sequences, on Southern blots. Electron microscopic DNA-DNA in situ hybridization was performed, with (a) a probe prepared from DNA extracted from the fibrillar complex of LEP cells, (b) a probe for human total genomic DNA, and (c) a probe for the transcribed part of human rDNA. On the basis of the results obtained we conclude that the ribosomal RNA genes in human Sertoli cells and spermatogonia A are predominantly associated with the dense fibrillar component, including the border region between fibrillar centres and the dense fibrillar component. The ribosomal RNA genes are the main, if not exclusive, DNA type present in the fibrillar complex in the studied cell types.

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