Combining melon varieties with chemical fungicides for integrated powdery mildew control in Tunisia

Rhouma, Abdelhak; Mehaoua, Mohamed Seghir; Mougou, Imen; Rhouma, Hamza; Shah, Kabita Kumari; Bedjaoui, Hanane

doi:10.1007/s10658-022-02599-3

Cited by 9 publications

(8 citation statements)

References 41 publications

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“…The disease index (DI) with a scale from 0 to 5; 0 = no rotting, 1 = 1–10%of the fruit surface, 2 = 11–20%of the fruit surface, 3 = 21–30%of the fruit surface, 4 = 31–50%of the fruit surface, and 5 = more than 50%of the fruit surface 37 . The efficacy of each treatment was rated based on its DSI: EE: Extremely effective (DSI = 0%), HE: Highly effective (DSI = 0.1–5%), E: effective (DSI = 5.1–25%), I: In-effective (DSI = 25.1–50%) and HI: Highly in-effective (DSI = 50.1–100%) 38 .…”

Section: Methodsmentioning

confidence: 99%

Phytochemical characterization of forest leaves extracts and application to control apple postharvest diseases

Hajji-Hedfi,

Rhouma,

Hlaoua

et al. 2024

Sci Rep

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The study investigated the antifungal and phytochemical properties of three forest plants (Eucalyptus globulus, Pistacia lentiscus, and Juniperus phoenicea) against apple diseases caused by Colletotrichum gloeosporioides and Alternaria alternata. The determination of the total polyphenol and flavonoid contents in the three aqueous extracts of studied plants showed that E. globulus exhibited the highest contents than those of P. lentiscus and J. phoenicea. Furthermore, the three studied extracts showed very appreciable antioxidant activity with decreasing order: E. globulus, P. lentiscus, and J. phoenicea. The phytochemical analysis showed different common phenolic acids in the three studied plants namely: quinic acid, gallic acid, chlorogenic acid, and caffeoylquinic acid as well as other flavonoids mainly quercetin and catechin. The results of the current study demonstrated that the fungistatic activity of E. globulus EO (4 and 2 µl/ml) seemed to be the most effective under laboratory conditions with an inhibition zone diameter above 16 mm. However, the poisoned food technique indicated that the aqueous extract (80%) and the essential oil (4 µl/ml) of E. globulus exhibited the highest mycelial growth (> 67%) and spore germination (> 99%) inhibition. Preventive treatments with essential oils (4 µl/ml) and aqueous extracts (80%) applied to apple fruits inoculated with A. alternata and C. gloeosporioides resulted in the lowest lesion diameter (< 6.80 mm) and disease severity index (< 15%) and the most favorable inhibitory growth (> 85.45%) and protective potentials (> 84.92%). The results suggest that E. globulus has a brilliant future in the management of anthracnose and Alternaria rot of apple and provide a basis for further studies on its effects under field conditions.

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Section: Methodsmentioning

confidence: 99%

Phytochemical characterization of forest leaves extracts and application to control apple postharvest diseases

Hajji-Hedfi,

Rhouma,

Hlaoua

et al. 2024

Sci Rep

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“…Compounds of essential oils represent an ecofriendly and bio-safe alternative to increase agricultural productivity and to maintain the pathogen population under economic injury level [32]. Singh et al [31] stated that the essential seed oil of Anethum graveolens was found to be highly effective for the management of the growth of Penicillium citrinum, F. graminearum and Aspergillus niger.…”

Section: Antifungal Activitymentioning

confidence: 99%

Essential Oils: An Ecofriendly Approach for Plant Pest and Disease Management

Rhouma

Hajji-Hedfi

Bousselma

et al. 2023

IJPSS

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Recently plant essential oils received increasing attention for plant health and food security in the sustainable agriculture context. Essential oils are promising biological sources since they are cost-effective, biodegradable, and safe for human health and the environment. This review covers the essential extraction characteristic, extraction methods, and conservation needed for the scientist’s and industries’ knowledge. Furthermore, the main biological activities and involvement of essential oils in plant pests and diseases are outlined. Finally, this review concludes the potential commercial application and the future challenges of essential oils as an eco-friendly method in sustainable agriculture.

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“…The resistance level of each treatment to gray mold was determined according to its DSI measured as a range from extremely resistant treatment (ER; DSI = 0%) to highly resistant treatment (HR; DSI = 0.1 to 5%), resistant treatment (R; DSI = 5.1 to 26%), susceptible treatment (S; DSI = 26.1 to 50%), and highly susceptible treatment (HS; DSI = 50.1 to 100%) (Rhouma et al, 2023).…”

Section: In Vitro Evaluation Of the Activity Of The Aqueous Seed Extr...mentioning

confidence: 99%

Valorization of Capsicum annuum seed extract as an antifungal against Botrytis cinerea

Hajji-Hedfi¹,

Rhouma²,

Al-Judaibi

et al. 2023

Preprint

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Botrytis cinerea Pers., the causal agent of gray mold, is an airborne pathogen that causes significant damage to tomato crops worldwide at all development stages and post-harvest. In this study, the aqueous extract of Capsicum annuum seeds was screened for its phytochemical constituents and assessed at various concentrations (10, 20, 30, and 60%) for antifungal activity in vitro. Selected biochemical, pathological, agronomical, physicochemical, and morphometrical traits were investigated to determine the effectiveness of applying the aqueous seed extract and salicylic acid either separately or in combination to tomato seeds and fruits in vivo. Phytochemical screening of the aqueous seed extract showed the presence of 2, 2-diphenyl-1-picrylhydrazyl, phenolic and flavonoid contents, quinic acid, protocatechuic acid, syringic acid, p-coumaric acid, trans-ferulic acid, rutin, quercetin-3-o-rhamonosic, kaempferol, naringenin, and apigenin at various concentrations. The findings suggested that the aqueous extract at a concentration of 60% was most efficient in vitro where mycelial growth was < 3.8 mm, mycelial growth inhibition was > 52%, and mycelial growth rate of < 1.05 mm/h. In vivo, the combined treatments of tomato seeds produced the greatest reduction in gray mold damage (disease severity index 8.67%) and the most favorable growth parameters of seedlings were chlorophyll a > 1.50 mg/g.f.Wt.; chlorophyll b > 1.76 mg/g.f. Wt.; total chlorophyll content > 3.26 mg/g.f.Wt.; seedling fresh weight > 0.43 g; seedling length > 12.43 cm, respectively. Combined preventive treatment applied to tomato fruits inoculated with B. cinerea resulted in the lowest disease severity (percentage of fruit area covered by gray mold < 33.33%; disease severity index < 46.67%) and the most favorable physicochemical attributes (water content < 98.28%; juice yield > 53.35%; pH < 3.59; titratable acidity > 1.37 g/10 ml juice; Brix degree > 4.73; nitrate content < 383.33 mg/kg; electrical conductivity < 2.47 mS/cm) and morphometrical attributes (fruit firmness > 3.03). The combined treatments resulted in the strongest activity of peroxidase (> 4.162 units/mg/min), ascorbate peroxidase (> 31.66 µmol/mg/min), and malondialdehyde (> 3.90 µmol/g) on the tomato fruits. The aqueous extract of C. annuum seeds combined with salicylic acid had positive effects in terms of inhibiting B. cinerea and is thus a promising and environmentally friendly alternative substitute for chemical fungicides towards sustainable agriculture under climate change.

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Combining melon varieties with chemical fungicides for integrated powdery mildew control in Tunisia

Cited by 9 publications

References 41 publications

Phytochemical characterization of forest leaves extracts and application to control apple postharvest diseases

Phytochemical characterization of forest leaves extracts and application to control apple postharvest diseases

Essential Oils: An Ecofriendly Approach for Plant Pest and Disease Management

Valorization of Capsicum annuum seed extract as an antifungal against Botrytis cinerea

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