Data/hora: 05/06/2024 18:07:05

Provedor de dados: 	52	
País: 	Brazil	
Título: 	Organic acid effect on calcium uptake by the wheat roots	
Autores: 	Nunes,Fabrize Caroline; Miyazawa,Mário; Pavan,Marcos Antonio.	
Data: 	2009-02-01	
Ano: 	2009	
Palavras-chave: 	Nutrient uptake; Metal-organic complex; Organic ligand; Organic molecule.	
Resumo: 	This work evaluated the effect of the natural organic acids on the uptake of Ca by the wheat roots in a hydroponic solution. The following organic acids were evaluated: citric, oxalic, tartaric, malic, malonic, maleic, DL-malic, p-hydroxybenzoic, aconitic, and salicilic. The organic acids neither enhanced the root growth nor increased Ca uptake. The salicilic and malic acids were highly toxic and decreased the root growth. The citric, tartaric, maleic, aconitic, and salicilic decreased the Ca uptake by the roots due to their higher capacity to form the stable complexes with Ca in solution at pH 6.0. Decreasing the Ca valence from Ca++ to CaL+ or CaL2(0) through the organic ligand complexation reactions decreased the Ca uptake. The results suggested that the wheat roots do not absorb Ca-organic complexes.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000100002	
Editor: 	Instituto de Tecnologia do Paraná - Tecpar	
Relação: 	10.1590/S1516-89132009000100002	
Formato: 	text/html	
Fonte: 	Brazilian Archives of Biology and Technology  v.52 n.1 2009	
Fonte: 	info:eu-repo/semantics/openAccess