Document Detail


Evidence for postmeiotic expression of ribosomal RNA genes during male gametogenesis.
MedLine Citation:
PMID:  914276     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Pre- and postmeiotic stages of male gametogenesis of 10 different vertebrate species belonging to mammals, birds, amphibians, and fishes were subjected to the Ag-AS staining technique (Goodpasture and Bloom, 1975). A uniform pattern of silver-staining is observable during spermatogenesis of the different vertebrate species. Silver-staining is present in spermatogonia and during the whole period of meiotic prophase, but totally absent during diakinesis and metaphase II of meiosis. In early spermatids silver-staining reappears and only disappears around the beginning of elongation of the spermatid nucleus. Since the Ag-AS technique is believed to stain only transcriptionally active nucleolus organizer regions, our findings indicate that ribosomal RNA genes become reactivated in the haploid spermatid.
Authors:
M Schmid; F J Hofgärtner; M T Zenzes; W Engel
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Human genetics     Volume:  38     ISSN:  0340-6717     ISO Abbreviation:  Hum. Genet.     Publication Date:  1977 Oct 
Date Detail:
Created Date:  1977-12-29     Completed Date:  1977-12-29     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  7613873     Medline TA:  Hum Genet     Country:  GERMANY, WEST    
Other Details:
Languages:  eng     Pagination:  279-84     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Animals
Anura
Chickens
Genes*
Guinea Pigs
Humans
Male
Meiosis
Metaphase
Mice
Prophase
RNA, Ribosomal / genetics*
Rats
Salamandridae
Spermatids
Spermatogenesis*
Spermatogonia
Trout
Chemical
Reg. No./Substance:
0/RNA, Ribosomal

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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