Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
New evidence that Lacandonia granules are ultrastructurally related to perichromatin and Balbiani ring granules
Autore:
Agredano-Moreno, LT; Jimenez-Garcia, LF;
Indirizzi:
Natl Autonomous Univ Mexico, Fac Sci, Dept Biol, Electron Microscopy Lab, Mexico City 04510, DF, Mexico Natl Autonomous Univ Mexico Mexico City DF Mexico 04510 04510, DF, Mexico Natl Autonomous Univ Mexico, Fac Sci, Dept Biol, Lab Confocal Microscopy, Mexico City 04510, DF, Mexico Natl Autonomous Univ Mexico Mexico City DF Mexico 04510 04510, DF, Mexico
Titolo Testata:
BIOLOGY OF THE CELL
fascicolo: 1, volume: 92, anno: 2000,
pagine: 71 - 78
SICI:
0248-4900(200001)92:1<71:NETLGA>2.0.ZU;2-J
Fonte:
ISI
Lingua:
ENG
Soggetto:
PRE-MESSENGER-RNA; IN-SITU HYBRIDIZATION; SCHISMATICA LACANDONIACEAE; SPLICING FACTORS; POLY(A) RNA; TRIURIDALES; PROTEINS; NUCLEUS; FAMILY; PLANTS;
Keywords:
ribonucleoprotein; SR proteins; ultrastructural in situ hybridization; Lacandonia schismatica; flower development;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
38
Recensione:
Indirizzi per estratti:
Indirizzo: Jimenez-Garcia, LF Natl Autonomous Univ Mexico, Fac Sci, Dept Biol, Electron Microscopy Lab, Ciudad Univ, Mexico City 04510, DF, Mexico Natl Autonomous Univ Mexico Ciudad Univ Mexico City DF Mexico 04510
Citazione:
L.T. Agredano-Moreno e L.F. Jimenez-Garcia, "New evidence that Lacandonia granules are ultrastructurally related to perichromatin and Balbiani ring granules", BIO CELL, 92(1), 2000, pp. 71-78

Abstract

Lacandonia granules are abundant non-typical extranucleolar ribonucleoprotein particles found in the nucleus of Lacandonia schismatica, a rare plant showing spatial inversion of sex organs. In the present study, changes in the number of Lacandonia granules during flower development, and the presence of SR proteins and poly(A)(+) RNA in the nuclei of L. schismatica were analyzed by electron microscopy, immunoelectron microscopy and ultrastructural in situ hybridization. Our results show an important reduction in the number of Lacandonia granules in the nuclei of cells of opened (post-anthesis)in relation to unopened (pre-anthesis) flowers, where granules are very abundant. The SR family of splicing factors and poly(A)(+) RNA are present inboth perichromatin fibers and Lacandonia granules. The developmental behavior, the presence of SR proteins, recently involved in post-splicing events, poly(A)(+) RNA and the reported absence of snRNPs splicing factors in Lacandonia granules, suggest that these particles are involved in postranscriptional events as storage and/or transport of mRNAs. A similar situation is present in other nuclear RNP as perichromatin granules present in mammals and Balbiani ring granules of salivary glands of Chironomus. Based on similarities in morphological, developmental behavior, immunocytochemistry and insitu hybridization results, we conclude that Lacandonia, perichromatin andBalbiani ring granules may be also functionally similar structures. 2000 (C) Editions scientifiques et medicales Elsevier SAS.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/11/20 alle ore 04:40:50