Efficacy of Compatibility between Endophytic Biocontrol Agents and Abiotic Agents as Fungicides Alternatives for Controlling Root Rot of Grapevine

Ziedan, E. H.; Saad, Moataza M.; El-Naggar, M.; Hemida, Khames Ahmed; Samman, Magdy Gad El-Rab El; Mostafa, Mostafa Helmy

doi:10.31080/asag.2020.04.0831

Cited by 4 publications

(2 citation statements)

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“…In this manner, in greenhouse experiments, soil amendement at sowing time with 1% of propionic acid solution reduced root rot disease incidence of grapevine in the soil artificially infested by pathogenic fungi of Fusarium spp. and Botryodiplodia theobromae and enhanced the morphological characteristics of grapevine plants (Ziedan et al 2020).…”

Section: Volatile Releasementioning

confidence: 95%

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Journal of Plant Protection Research

Ziedan

2022

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The fumigant pesticide methyl bromide (MB) is no longer used in most countries due to its carcinogenic effects. It is followed by carbon bisulfide and chloropicrin which are the most effective liquid synthetic chemicals in pesticide formulations. They are converted to gas to penetrate soil particles and eliminate plant pests such as insects, weeds, and causal plant diseases of viruses, bacteria, fungi, and nematodes under greenhouse, field and storage conditions. These fumigants are non specific pesticides and highly hazardous to humans, environmental resources, and deplete the ozone layers. Furthermore, increasing the cost of crop production by inceasing the amount of pesticides treatments was increased the cost of research on the alternatives of green pesticides from eco-friendly agents, natural organic soil amendments of organic wastes, green manure, biofumigation crops, compost, and essential oils, as well as formulations, are examples of this. Organic fumigants that are non toxic, non-residual, highly degradable and decomposable are available as eco-friendly alternatives to chemical pesticides to manage soil borne pests and diseases of plants. This article summarizes the development of applicable eco-friendly formulations which use natural organic materials to disinfest soil in order to reduce plant diseases caused by soil--borne pathogens.

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Section: Volatile Releasementioning

confidence: 95%

“…ciceris (Kadoglidou et al 2020). Recently, in greenhouse experiments, a soil amendment of 500 ml at 4% of black seed essential oil at sowing date reduced fungal root rot incidence, disease severity, and enhanced morphological characteristics of grapevine plants (Ziedan et al 2020).…”

Section: Soil Fungal Diseasesmentioning

confidence: 99%

Journal of Plant Protection Research

Ziedan

2022

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Evaluation of essential oils nanoemulsions formulations on Botrytis cinerea growth, pathology and grey mould incidence on cucumber fruits

Ziedan

Saad

El-Kafrawy³

et al. 2022

Bull Natl Res Cent

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Background Grey mould caused by Botrytis cinerea of cucumber immature fruits is the most epidemic fungal diseases causing significantly losses of fruits during development on cucumber plant in winter season. Material and methods Crude and nanoemulsions of clove, black seed, lemon and orange essential oils at (5000 ppm) and also different formulations of clove, black seed and lemon oils nanoemulsions as single or in combination were tested against mycelial linear growth of B. cinerea (MF996363) as well sclerotial formation and pathological activity on the development of germinated seeds of cucumber. Results Essential oils nanoemulsion formulation of clove + black seed (2:1) at 5000 ppm was the best formulation significantly reduced mycelia linear growth of B. cinerea by 61.0% followed by 28% formulation (1:1) and (1:2). In addition, nanoemulsions formulations of clove, black seed essential oils (2:1) were highly reduced the count of sclerotial formation of B. cinerea and completely (100%) suppress seed rot and seedling mortality of cucumber followed by nanoemulsion of clove only. Conclusions Foliar application of nanoemulsion formulation of clove + black seeds is promising than fungicides (Topsin M-70) in controlling grey mould on cucumber fruits caused by B. cinerea in plastic greenhouse with no phytotoxicity on cucumber plants.

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Antifungal activity of eco-safe nanoemulsions based on Nigella sativa oil against Penicillium verrucosum infecting maize seeds: Biochemical and physiological traits

et al. 2023

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The main goals of the present investigation were to develop O/W nanoemulsion fungicides based on cold-pressed Nigella sativa (black seed) oil to prevent Penicillium verrucosum infection of maize seeds and to test their antifungal activity against this fungus. Additionally, the effect of these nanoemulsions on plant physiological parameters was also investigated. Two nonionic surfactants namely Tween 20 and Tween 80 were used as emulsifying agents in these formulations. The effect of sonication time and surfactant type on the mean droplet size, polydispersity index (PDI), and zeta potential of the nanoemulsions were determined by dynamic light scattering (DLS). Results indicated that both sonication time and emulsifier type had pronounced effects on the stability of O/W nanoemulsions with a small particle size range (168.6–345.3 nm), acceptable PDI (0.181–0.353), and high zeta potential (−27.24 to –48.82 mV). Tween 20 showed superior stability compared to Tween 80 nanoemulsions. The in vitro results showed that complete inhibition of P. verrucosum-growth was obtained by 10_T80 and 10_T20 nanoemulsions at 100% concentration. All nanoemulsions had increment effects on maize seed germination by 101% in the case of 10_T20 and 10_T80 compared to untreated seeds or the chemical fungicide treatment. Nanoemulsions (10_T20 and 10_T80) were able to stimulate root and shoot length as compared to the fungicide treatment. Seed treatment with 10_T80 nanoemulsion showed the highest AI and protease activity by 75 and 70%, respectively, as compared to the infected control. The produced nanoemulsions might provide an effective protectant coating layer for the stored maize seeds.

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Efficacy of Compatibility between Endophytic Biocontrol Agents and Abiotic Agents as Fungicides Alternatives for Controlling Root Rot of Grapevine

Cited by 4 publications

References 0 publications

Journal of Plant Protection Research

Journal of Plant Protection Research

Evaluation of essential oils nanoemulsions formulations on Botrytis cinerea growth, pathology and grey mould incidence on cucumber fruits

Antifungal activity of eco-safe nanoemulsions based on Nigella sativa oil against Penicillium verrucosum infecting maize seeds: Biochemical and physiological traits

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