Data/hora: 02/06/2024 16:39:22

Provedor de dados: | Pesquisa Agropecuária Brasileira
País: | Brazil
Título: | Fusarium oxysporum strains as biocontrol agents against Fusarium wilt: effects on soil microbial biomass and activity
Autores: | Ghini,Raquel; Mezzalama,Monica; Ambrosoli,Roberto; Barberis,Elisabetta; Garibaldi,Angelo; Piedade,Sônia Maria de Stefano.
Data: | 2000-01-01
Ano: | 2000
Palavras-chave: | Biological control; Soilborne pathogen; Risk assessment.
Resumo: | Before planning the large-scale use of nonpathogenic strains of Fusarium oxysporum as biocontrol agents of Fusarium wilt, their behaviour and potential impact on soil ecosystems should be carefully studied as part of risk assessment. The aim of this work was to evaluate the effects of antagonistic F. oxysporum strains, genetically manipulated (T26/6) or not (233/1), on soil microbial biomass and activity. The effects were evaluated, in North-western Italy, in two soils from different sites at Albenga, one natural and the other previously solarized, and in a third soil obtained from a 10-year-old poplar stand (Popolus sp.), near Carignano. There were no detectable effects on ATP, fluorescein diacetate hydrolysis, and biomass P that could be attributed to the introduction of the antagonists. A transient increase of carbon dioxide evolution and biomass C was observed in response to the added inoculum. Although the results showed only some transient alterations, further studies are required to evaluate effects on specific microorganism populations.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2000000100012

Editor:

Embrapa Secretaria de Pesquisa e Desenvolvimento

Pesquisa Agropecuária Brasileira

Relação: | 10.1590/S0100-204X2000000100012
Formato: | text/html
Fonte: | Pesquisa Agropecuária Brasileira  v.35 n.1 2000
Fonte: | info:eu-repo/semantics/openAccess