APPLIED FRUIT SCIENCE, cilt.67, ss.1-8, 2025 (SCI-Expanded, Scopus)
The soil-borne disease Fusarium oxysporum f. sp. fragariae (Fof) causes significant economic losses worldwide, and controlling it is a challenge for global farmers. This study aimed to manage this issue by treating strawberry cv. ‘Albion’ plants using sodium nitroprusside (SNP) after Fof inoculation using different combinations to determine the optimal treatment. Treatments included: (a) Control (no SNP, no infection), (b) SNP (100 µmol SNP applied, no infection), (c) Fof (no SNP, infected), (d) SNP + Fof (100 µmol SNP applied 1 week before infection), (e) Fof = SNP (simultaneous treatments), (f) Fof + SNP (100 µmol SNP applied 1 week after infection). At 4 weeks after planting, the treatments started and disease progression and severity were evaluated after 6 weeks. Chlorophyll, phenolic compounds, hormones, and plant histological responses were evaluated during the experiment. Fof plants had the maximum decline, compared with SNP + Fof treated plants with the minimum decline. Biomass improved with SNP treatment pre-infection. SNP + Fof exhibited superior protective effects on photosynthetic pigments. Fof reduced Casparian strip thickness, root cortex thickness, and central cylinder diameter, while SNP + Fof treatment induced maximum protection. Fof lowered zeatin and salicylic acid levels; SNP + Fof notably raised them. Phenolic compounds declined with Fof treatment, but SNP treatment increased their levels. The results highlighted the efficacy of SNP treatments before the induction of Fof attack.