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Artigo Acesso aberto Produção Nacional Revisado por pares
BIBTEX RIS

Infection process of Fusarium oxysporum f. sp. phaseoli on resistant, intermediate and susceptible bean cultivars

2013; Springer Science+Business Media; Volume: 38; Issue: 4 Linguagem: Inglês

10.1590/s1982-56762013005000022

ISSN

1983-2052

Autores

Alisson Campos Pereira, Maria Fernanda Antunes da Cruz, Trazilbo J. Paula Júnior, Fabrício Ávila Rodrigues, J.E.S. Carneiro, Rogério Faria Vieira, Pedro Crescêncio Souza Carneiro,

Tópico(s)

Plant-Microbe Interactions and Immunity

Resumo

The objective of this study was to understand the infection process of Fusarium oxysporum f. sp. phaseoli (Fop) in bean cultivars classified as resistant (Manteigão Fosco 11), intermediate (VP8) and susceptible (Meia Noite). Plants of the three cultivars were inoculated at 10 days after emergence with a suspension of 1×10(6) conidia of Fop per mL. At 43 days after the inoculation, stem segments were observed with a scanner electronic microscope. The cultivars Manteigão Fosco 11 and VP8 presented an occluding material in the xylem vessels, which may have restricted tissue colonization by Fop. The resistance of bean cultivars to Fop seemed also to be explained by structural differences in the xylem tissue.

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