Data/hora: 05/06/2024 06:24:35

Provedor de dados: 	86	
País: 	Brazil	
Título: 	Optimization of particle bombardment parameters for the genetic transformation of Brazilian maize inbred lines	
Autores: 	Petrillo,Caroline Pereira; Carneiro,Newton Portilho; Purcino,Antônio Álvaro Corsetti; Carvalho,Carlos Henrique Siqueira; Alves,José Donizeti; Carneiro,Andréa Almeida.	
Data: 	2008-03-01	
Ano: 	2008	
Palavras-chave: 	Zea mays; Ammonium glufosinate; Beta-glucuronidase; Immature embryos; Phosphinotricin acetyl transferase; Plant transformation.	
Resumo: 	The objective of this work was to develop a genetic transformation system for tropical maize genotypes via particle bombardment of immature zygotic embryos. Particle bombardment was carried out using a genetic construct with bar and uidA genes under control of CaMV35S promoter. The best conditions to transform maize tropical inbred lines L3 and L1345 were obtained when immature embryos were cultivated, prior to the bombardment, in higher osmolarity during 4 hours and bombarded at an acceleration helium gas pressure of 1,100 psi, two shots per plate, and a microcarrier flying distance of 6.6 cm. Transformation frequencies obtained using these conditions ranged from 0.9 to 2.31%. Integration of foreign genes into the genome of maize plants was confirmed by Southern blot analysis as well as bar and uidA gene expressions. The maize genetic transformation protocol developed in this work will possibly improve the efficiency to produce new transgenic tropical maize lines expressing desirable agronomic characteristics.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2008000300012	
Editor: 	Embrapa Secretaria de Pesquisa e Desenvolvimento

Pesquisa Agropecuária Brasileira	
Relação: 	10.1590/S0100-204X2008000300012	
Formato: 	text/html	
Fonte: 	Pesquisa Agropecuária Brasileira  v.43 n.3 2008	
Fonte: 	info:eu-repo/semantics/openAccess