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Summa Phytopathologica

versão impressa ISSN 0100-5405versão On-line ISSN 1980-5454

Resumo

SOARES, Rafael Moreira  e  MARINGONI, Antonio Carlos. Effectiveness of Fusarium spp. in controlling bacterial wilt in beans. Summa phytopathol. [online]. 2018, vol.44, n.1, pp.79-82. ISSN 0100-5405.  https://doi.org/10.1590/0100-5405/168402.

This study aimed to evaluate the inhibitory action of Fusarium oxysporum f. sp. phaseoli and Fusarium spp., in vitro, on isolates of Curtobacterium flaccumfaciens pv. flaccumfaciens (Cff) and the action of Fusarium spp. in controlling bacterial wilt in bean plants, cultivar IAC Carioca, grown in pots with substrate infested by the fungus at four concentrations. Isolates of F. oxysporum f. sp. phaseoli and Fusarium spp. grown on paper filter discs, in agar culture medium, produced metabolites that inhibited the growth of Cff isolates. However, extracts obtained by filtering the cultures of fungal isolates in liquid medium did not inhibit, in vitro, the growth of Cff isolates. The isolates of Fusarium spp. infested in the substrate, regardless of the used concentration, were not effective in controlling bacterial wilt in bean plants.

Palavras-chave : Curtobacterium flaccumfaciens pv. flaccumfaciens; biological control; Phaseolus vulgaris; resistance induction.

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