Histopathological features of infections caused by Fusarium oxysporum and F. solani in purple passionfruit plants (Passiflora edulis Sims)

  • Ortiz E
  • Cruz M
  • Melgarejo L
  • et al.
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Abstract

The purple passionfruit plant, Passifloraedulis Sims, ranks second in fruit exportation in Colombia, and its main destination is the European market. However, its production is affected by several diseases, including fusariosis. This paper presents the histopathological features of different tissues affected by the pathogens Fusarium oxysporum and Fusarium solani. Both microorganisms produce similar responses on the plant: colonization of xylem vessels by hyphae and microconidia, hypertrophy and hyperplasia of the cambium, xylem and phloem; destruction of xylem fibers and amyloplasts in parenchymatous cells; and production of gels by the plant. However, there are differences in the colonization mechanism, F. solani penetrates and is concentrated especially at the collar zone, while F. oxysporum penetrates the roots and moves through the vascular system to colonize the plant.O maracujá roxo Passiflora edulis Sims., destaca-se posicionado em segundo lugar na exportação de frutas da Colômbia, cujo mercado europeu é o principal destino. No entanto, a produção é afetada por várias doenças, incluindo a presença de fusariose. Este trabalho apresenta as características histopatológicas de diferentes tecidos afetados elos patógenos Fusarium oxysporum e Fusarium solani. Ambos os organismos produzem efeitos semelhantes sobre a planta: colonização dos vasos do xilema por hifas e microconídios, hipertrofia e hiperplasia do câmbio, xilema e floema; destruição de fibras do xilema e amiloplastos em células parenquimatosas, também a produção de géis pela planta. No entanto, existem diferenças no mecanismo de colonização, F. solani entra e se concentra principalmente na área do colo enquanto F. oxysporum penetra nas raízes e move-se através do sistema vascular para colonizar a planta.

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APA

Ortiz, E., Cruz, M., Melgarejo, L. M., Marquínez, X., & Hoyos-Carvajal, L. (2014). Histopathological features of infections caused by Fusarium oxysporum and F. solani in purple passionfruit plants (Passiflora edulis Sims). Summa Phytopathologica, 40(2), 134–140. https://doi.org/10.1590/0100-5405/1910

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