Occurrence of Ralstonia solanacearum on olive tree in Brazil.
In 2011, olive trees in a field in Camanducaia, Minas Gerais State, Brazil, showed symptoms of permanent leaf wilting, stem rot, phelloderm loss near the ground and vascular tissue discoloration. Based on biochemical, physiological and morphological characteristics as well as pathogenicity test, the causal agent was identified as R. solanacearum. This bacterium has been described for olive trees in Australia and China. This is thought to be the first report of R. solanacearum causing bacterial wilt on olive trees in Brazil.