Data/hora: 04/06/2024 11:13:29

Biblioteca(s): 	Embrapa Trigo.	
Data corrente: 	10/01/2010	
Data da última atualização: 	08/10/2013	
Autoria: 	PEDDADA, L. B.; MASCARENHAS, J. P.	
Título: 	The synthesis of 5S ribosomal RNA during pollen development.	
Ano de publicação: 	1975	
Fonte/Imprenta: 	Development, Growth and Differentiation, v. 17, n. 1, p. 1-8, 1975.	
Idioma: 	Inglês	
Conteúdo: 	Tradescantia paludosa 5S ribosomal RNA (rRNA) has been characterized with respect to its base composition and relative electrophoretic mobility in comparison with that of E. coli. The period of 5S rRNA synthesis during pollen grain development was determined by pulse labeling the RNA synthesized during a 24 hr period of development with 32P and then chasing in cold medium until pollen maturity. The period of highest 5S rRNA synthesis was found to occur prior to microspore mitosis. During and following mitosis over a period of 4 days there was a sharp decrease in the amount of 5S RNA synthesized and during the last 48 hr of pollen maturation, no 5S rRNA was synthesized.	
Palavras-Chave: 	Micrósporo.	
Thesagro: 	Mitose; Pólen.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Trigo (CNPT)	
Exemplares: 	CNPT - (25855-1) - ADD - SP - -- - 11936 -  - 11936 - DIS