Effectiveness of some resistance inducers for controlling carnation vascular wilting caused byFusarium oxysporumf. sp.dianthi

Mycelium Dispersion from Fusarium oxysporum f. sp. dianthi Elicits a Reduction of Wilt Severity and Influences Phenolic Profiles of Carnation (Dianthus caryophyllus L.) Roots

“…Thus, after a subsequent challenge with the viral pathogen, at the opposite end of the plant, the elicited tissue presented fewer lesions and smaller sizes than those observed in control plants (i.e., non-elicited, inoculated leaves). In general, the application of different elicitors has been reported for several pathosystems [ 11 , 46 ], including carnation Fod [ 17 ]. However, the root application of biotic elicitors by direct incorporation into the sowing soil had not yet been reported.…”

“…This disease has been reported in several carnation-producing countries, showing a high incidence in various commercially important cultivars ([ 15 , 16 ]). Therefore, the resistance induction for controlling carnation vascular wilt has attracted the recent attention of the scientific community, considering the positive environmental impact that its application would have on carnation production [ 17 ]. In other F. oxysporum ( Fox ) - hosting species, such as melon [ 18 ] and tomato [ 19 ], the application of a Fox -derived crude extract generated tissue sensitization and symptom reduction during a subsequent pathogen exposition.…”

“…Therefore, the aim of the present study was to evaluate the effect of the application of a mycelium dispersion with eliciting potential, obtained from Fod (namely e Fod ), on the vascular wilting severity and root phenolic-like metabolite profiles. The vascular wilting severity was evaluated for up to 8 weeks, since the symptoms associated with this disease on a carnation cuttings model can be adequately observed during this timeframe [ 17 ]. Additionally, metabolite profile variations were evaluated up to 96 h post-elicitation (hpe) in order to explore the biochemical changes that occur early, since several variations related to plant defense resistance have been reported during these timeframes in carnation [ 17 , 36 , 37 ].…”

“…The vascular wilting severity was evaluated for up to 8 weeks, since the symptoms associated with this disease on a carnation cuttings model can be adequately observed during this timeframe [ 17 ]. Additionally, metabolite profile variations were evaluated up to 96 h post-elicitation (hpe) in order to explore the biochemical changes that occur early, since several variations related to plant defense resistance have been reported during these timeframes in carnation [ 17 , 36 , 37 ]. In this regard, we expected that such eliciting-derived metabolic changes could be observed early, considering that a rapid defense activation would provide advantages to the host.…”

Plant hormones accumulation and its relationship with symplastic peroxidases expression during carnation-Fusarium oxysporum interaction

“…The development of new strategies for environmentally-friendly control of fungal diseases is necessary for this crop. Alternatives such as the cultivation of resistant cultivars, biological control, and resistance inducers (RIs) application have attracted the attention of the scientific community (Alexandersson et al, 2016;Pérez Mora et al, 2021). Indeed, understanding the biochemical phenomena involved in the plant pathogen resistance is a current challenge for the phytopathologist (Kou et al, 2021;Miyaji et al, 2021;Nunes da Silva et al, 2021).…”