Data/hora: 03/06/2024 16:32:35

Provedor de dados: 	52	
País: 	Brazil	
Título: 	Release of potassium from rock powder by the yeast Torulaspora globosa	
Autores: 	Rosa-Magri,Márcia Maria; Avansini,Simoni Helena; Lopes-Assad,Maria Leonor; Tauk-Tornisielo,Sâmia Maria; Ceccato-Antonini,Sandra Regina.	
Data: 	2012-08-01	
Ano: 	2012	
Palavras-chave: 	Biosolubilization; Insoluble rocks; Alkaline ultramafic.	
Resumo: 	The alteration of minerals in rocks and the availability of elements for plant nutrition require long periods of time, and microorganisms are thought to induce the release of potassium and phosphate from rocks. In this context, this work evaluates the role of the yeast Torulaspora globosa, isolated from the sugar cane rhizosphere, in the solubilization of potassium from alkaline ultramafic rock powder. The experiments were performed in liquid medium, with or without agitation, at 30°C with the following treatments: culture medium + alkaline ultramafic; culture medium + yeast suspension; and culture medium + yeast suspension + alkaline ultramafic. The results showed that as much as 38% of the total potassium in the rock was released in the medium with the yeast during a 15-day period of incubation. Acid production may be the mechanism by which the yeast solubilizes potassium because the total acidity increased during the sampling period. Agitation (which increased oxygen availability) resulted in approximately 20% more biosolubilization of the alkaline ultramafic rock than with the static culture. These data indicate the potential for this yeast in biosolubilization processes and biofertilizer production.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000400013	
Editor: 	Instituto de Tecnologia do Paraná - Tecpar	
Relação: 	10.1590/S1516-89132012000400013	
Formato: 	text/html	
Fonte: 	Brazilian Archives of Biology and Technology  v.55 n.4 2012	
Fonte: 	info:eu-repo/semantics/openAccess