No full text
Article (Scientific journals)
Identification of coiled body-like structures in meristematic cells of Pisum sativum cotyledonary buds.
Jennane, A.; Thiry, Marc; Goessens, Guy
1999In Chromosoma, 108 (2), p. 132-42
Peer Reviewed verified by ORBi
 

Files


Full Text
No document available.

Send to



Details



Keywords :
Cell Nucleolus/metabolism/ultrastructure; DNA, Plant/metabolism; Immunohistochemistry; Microscopy, Electron; Peas/metabolism/ultrastructure; Ribonucleoproteins/metabolism
Abstract :
[en] This study focused on two types of nuclear bodies visible in plant cells that were previously thought to be similar to the coiled bodies (CBs) of animal cells: the nucleolus-associated body (NAB) and dense body (DB). We show that both NABs and DBs share common features with animal CBs: they consist of ribonucleoproteins, are silver-stainable, and lack DNA. Immunoelectron microscopy shows that only the NABs are rich in snRNAs and fibrillarin, two markers characteristic of animal CBs. This suggests that NABs rather than DBs are the plant counterparts of the CBs of animal cells. These structures appear most frequently in cells blocked in G0-1, their frequency gradually declining with resumption of the cell cycle and nucleolar activity. During this reactivation period, NABs are released from the nucleolus to the nucleoplasm, suggesting that they may act as nuclear transport or sorting structures.
Disciplines :
Anatomy (cytology, histology, embryology...) & physiology
Author, co-author :
Jennane, A.
Thiry, Marc  ;  Université de Liège - ULiège > Département des sciences de la vie > Biologie cellulaire
Goessens, Guy ;  Université de Liège - ULiège > Services généraux (Faculté des sciences) > Relations académiques et scientifiques (Sciences)
Language :
English
Title :
Identification of coiled body-like structures in meristematic cells of Pisum sativum cotyledonary buds.
Publication date :
1999
Journal title :
Chromosoma
ISSN :
0009-5915
eISSN :
1432-0886
Publisher :
Springer Verlag, Berlin, Germany
Volume :
108
Issue :
2
Pages :
132-42
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 25 November 2009

Statistics


Number of views
54 (0 by ULiège)
Number of downloads
0 (0 by ULiège)

Scopus citations®
 
9
Scopus citations®
without self-citations
8
OpenCitations
 
6

Bibliography


Similar publications



Contact ORBi