Data/hora: 15/06/2024 21:14:28

Provedor de dados: 	58	
País: 	Brazil	
Título: 	Influence of iron and copper on the activity of laccases in Fusarium oxysporum f. sp. lycopersici	
Autores: 	Hernández-Monjaraz,Wendy Susana; Caudillo-Pérez,César; Salazar-Sánchez,Pedro Ulises; Macías-Sánchez,Karla Lizbeth.	
Data: 	2018-01-01	
Ano: 	2018	
Palavras-chave: 	Chelators; Cooper; Fusarium; Iron; Laccases.	
Resumo: 	ABSTRACT Fusarium oxysporum f. sp. lycopersici is a phytopathogenic fungus that causes vascular wilt in tomato plants. In this work we analyze the influence of metal salts such as iron and copper sulphate, as well as that of bathophenanthrolinedisulfonic acid (iron chelator) and bathocuproinedisulfonic acid (copper chelator) on the activity of laccases in the intra (IF) and extracellular fractions (EF) of the wild-type and the non-pathogenic mutant strain (rho1::hyg) of F. oxysporum. The results show that laccase activity in the IF fraction of the wild and mutant strain increased with the addition of iron chelator (53.4 and 114.32%; respectively). With copper, it is observed that there is an inhibition of the activity with the addition of CuSO4 for the EF of the wild and mutant strain (reduction of 82 and 62.6%; respectively) and for the IF of the mutant strain (54.8%). With the copper chelator a less laccase activity in the IF of the mutant strain was observed (reduction of 53.9%). The results obtained suggest a different regulation of intracellular laccases in the mutant strain compared with the wild type in presence of CuSO4 and copper chelator which may be due to the mutation in the rho gene.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000500269	
Editor: 	Sociedade Brasileira de Microbiologia	
Relação: 	10.1016/j.bjm.2018.06.002	
Formato: 	text/html	
Fonte: 	Brazilian Journal of Microbiology  v.49 suppl.1 2018	
Fonte: 	info:eu-repo/semantics/openAccess