Data/hora: 01/06/2024 02:16:07

Provedor de dados: 	61	
País: 	Brazil	
Título: 	cDNA-AFLP analysis of Psidium guajava L. cultivars under water stress and mechanical injury: methodological implications	
Autores: 	Furlan,Cláudia Maria; Zanotta,Samantha; Salatino,Antonio.	
Data: 	2012-01-01	
Ano: 	2012	
Palavras-chave: 	Automatic sequencer; Gene expression; Mechanical injury; Water stress.	
Resumo: 	Studies involving amplified fragment length polymorphism (cDNA-AFLP) have often used polyacrylamide gels with radiolabeled primers in order to establish best primer combinations, to analyze, and to recover transcript-derived fragments. Use of automatic sequencer to establish best primer combinations is convenient, because it saves time, reduces costs and risks of contamination with radioactive material and acrylamide, and allows objective band-matching and more precise evaluation of transcript-derived fragments intensities. This study aimed at examining the gene expression of commercial cultivars of P. guajava subjected to water and mechanical injury stresses, combining analyses by automatic sequencer and fluorescent kits for polyacrylamide gel electrophoresis. Firstly, 64 combinations of EcoRI and MseI primers were tested. Ten combinations with higher number of polymorphic fragments were then selected for transcript-derived fragments recovering and cluster analysis, involving 45 saplings of P. guajava. Two groups were obtained, one composed by the control samplings, and another formed by samplings undergoing stress, with no clear distinction between stress treatments. The results revealed the convenience of using a combination of automatic sequencer and fluorescent kits for polyacrylamide gel electrophoreses to examine gene expression profiles. The Unweighted Pair Group Method with Arithmetic Mean analysis using Euclidean distances points out a similar induced response mechanism of P. guajava undergoing water stress and mechanical injury.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202012000100005	
Editor: 	Brazilian Journal of Plant Physiology	
Relação: 	10.1590/S1677-04202012000100005	
Formato: 	text/html	
Fonte: 	Brazilian Journal of Plant Physiology  v.24 n.1 2012	
Fonte: 	info:eu-repo/semantics/openAccess