Journal of Plant Pathology (2018) 100, 97-104

Slavica Matic, Giovanna Gilardi, Maria Lodovica Gullino and Angelo Garibaldi (2018)
Evidence for an expanded host range of Fusarium oxysporum f. sp. chrysanthemi
Journal of Plant Pathology 100 (1), 97-104
Abstract: Fusarium oxysporum, associated with wilt symptoms, has been reported in commercial nurseries in Northern Italy in several hosts of the Asteraceae family, such as chrysanthemum, Paris daisy, African daisy, and gerbera. Forma specialis chrysanthemi was assigned as the causal agent of this wilt disease. Severe wilting has recently been observed on the new Asteraceae host, orange coneflower (Rudbeckia fulgida). Morphological observations and sequencing of the translation elongation factor 1α (EF-1α) gene have indicated the involvement of F. oxysporum in this disease. The objective of this study was to identify the forma specialis of F. oxysporum isolated from orange coneflower. This was achieved by means of pathogenicity tests and phylogenetic analyses on the EF-1α and intergenic spacer (IGS) regions performed on single-spore isolates. The results of this study have characterized Fusarium oxysporum on orange coneflower for the first time. F. oxysporum f. sp. chrysanthemi was identified as the causal agent of the wilt disease. This represents the first report of this forma specialis on orange coneflower in Italy, as well as in the world.
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Link to article at publishers website
Database assignments for author(s): Slavica Matic

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Fusarium oxysporum f.sp. chrysanthemi	Rudbeckia (crop)	Italy