Control of foliar phytoparasitic nematodes through sustainable natural materials: Current progress and challenges

El‐Saadony, Mohamed T.; Abuljadayel, Dalia A.; Shafi, Manal E.; Albaqami, Najah M.; Desoky, El-Sayed M.; El-Tahan, Amira M.; Mesiha, Philemon K.; Elnahal, Ahmed S. M.; Almakas, Aisha; Taha, Ayman E.; El–Mageed, Taia A. Abd; Hassanin, Abdallah A.; Elrys, Ahmed S.; Saad, Ahmed M.

doi:10.1016/j.sjbs.2021.08.035

Cited by 23 publications

(12 citation statements)

References 115 publications

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“…In our study, DRPE has high levels of phenolic, flavonoid, and volatile compounds that are highly related to high levels of radical scavenging [ 36 ]. In Figure 8 A, DRPE (800 µg/mL) significantly scavenged 70% of DPPH free radicals, which increased to 93.55% when the DRPE concentration was 1800 µg/mL, comparable with ascorbic acid.…”

Section: Resultsmentioning

confidence: 99%

Characterization of Delonix regia Flowers’ Pigment and Polysaccharides: Evaluating Their Antibacterial, Anticancer, and Antioxidant Activities and Their Application as a Natural Colorant and Sweetener in Beverages

et al. 2023

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In the present study, an attempt was made to investigate the in vitro antioxidant, anticancer, and antibacterial activities of Delonix regia, then in vivo evaluate its safety as a natural colorant and sweetener in beverages compared to synthetic colorant and sweetener in rats, then serve the beverages for sensory evaluation. Delonix regia flowers had high protein, polysaccharide, Ca, Na, Mg, K, and Fe contents. The Delonix regia pigment extract (DRPE) polysaccharides were separated and purified by gel permeation chromatography on Sephacryl S-200, characterized by rich polysaccharides (13.6 g/L). The HPLC sugar profile detected the monosaccharides in the extracted polysaccharides, composed of mannose, galactose, glucose, arabinose, and gluconic acid, and the structure of saccharides was confirmed by FTIR, which showed three active groups: carbonyl, hydrocarbon, and hydroxyl. On the other hand, the red pigment constituents of DRPE were detected by HPLC; the main compounds were delphinidin and cyanidin at 15 µg/mL. The DRPE contained a considerable amount (26.33 mg/g) of anthocyanins, phenolic compounds (64.7 mg/g), and flavonoids (10.30 mg/g), thus influencing the antioxidant activity of the DRPE, which scavenged 92% of DPPH free radicals. Additionally, it inhibited the population of pathogenic bacteria, including Staphylococcus aureus, Listeria monocyogenes, Salmonella typhimurum, and Pseudomonas aeruginosa, in the range of 30–90 μg/mL, in addition to inhibiting 85% of pancreatic cancer cell lines. On the in vivo level, the rats that were delivered a diet containing DRPE showed regular liver markers (AST, ALP, and ALT); kidney markers (urea and creatinine); high TP, TA, and GSH; and low MDA, while rats treated with synthetic dye and aspartame showed higher liver and kidney markers; lowered TP, TA, and GSH; and high MDA. After proving the safety of DRPE, it can be safely added to strawberry beverages. Significant sensorial traits, enhanced red color, and taste characterize the strawberry beverages supplemented with DRPE. The lightness and redness of strawberries were enhanced, and the color change ΔE values in DRPE-supplemented beverages ranged from 1.1 to 1.35 compared to 1.69 in controls, indicating the preservative role of DRPE on color. So, including DRPE in food formulation as a natural colorant and sweetener is recommended for preserving health and the environment.

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Section: Resultsmentioning

confidence: 99%

Characterization of Delonix regia Flowers’ Pigment and Polysaccharides: Evaluating Their Antibacterial, Anticancer, and Antioxidant Activities and Their Application as a Natural Colorant and Sweetener in Beverages

et al. 2023

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“…Root-knot nematodes can complete their entire life cycle in 20-40 days; however, its life cycle duration is influenced by soil moisture, temperature, and host species (El-Saadony et al 2021). The life cycle of RKNs begins with an egg from which a second-stage juvenile (J2) hatches.…”

Section: Life Cycle Of Root-knot Nematodesmentioning

confidence: 99%

Plant growth promoting rhizobacteria (PGPR) and their role in plant-parasitic nematodes control: a fresh look at an old issue

2022

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The increasing demand for agricultural products can be met by maximizing production potential and reducing crop losses caused by common plant-parasitic nematodes. Chemical-based nematode management is a successful technique for mitigating damage and yield losses caused by nematode pests; however, inappropriate and irresponsible application of synthetic pesticides has negative impacts on fauna, bioflora, and natural enemies such as predators and parasites. The use of biocontrol agents is the most appreciated method for nematode control among farmers because it’s safe and reduces environmental pollution. There is increasing focus on the biological control of plant-parasitic nematodes using plant growth-promoting rhizobacteria (PGPR) as a biopesticide. Moreover, PGPR strains can promote plant growth by producing various secondary metabolites of these PGPRs. This review focuses on the direct (Nitrogen fixation, phytohormone formation, phosphate solubilization, Potassium solubilization, siderophores and ammonia production) and indirect mechanisms (Hyperparasitism, antibiosis, lytic enzyme production, induced systemic resistance) of action of PGPR in plant-parasitic nematodes management, and the future prospects of PGPR-based plant-parasitic nematodes biocontrol agents.

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“…Recent taxonomy studies show over 25,000 species of nematodes though this number is still increasing with the progress of research and discovery of new species [7][8]. The majority of plant-parasitic nematodes feed on roots although some nematodes feed on leaves and other upper parts of a plant [9]. In general, depending on their feeding style, nematodes are classified as endoparasites for those that penetrate the host root to feed; and ectoparasites for those that feed externally by inserting their mouth stylet into the root cells [10].…”

Section: Introductionmentioning

confidence: 99%

Efficacy of Beneficial Microbes in Sustainable Management of Plant Parasitic Nematodes: A Review

Medison

Tan

et al. 2021

IJPSS

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The soil inhabits many microbes, including plant parasitic nematodes. Plant parasitic nematodes are reported to cause substantial damage to crops which results in yield and economic losses. Chemical control is the most widely used method to control plant parasitic nematodes. However, the consequences of synthetic chemicals are detrimental to human health, animals, and the environment and face so many strict regulatory measures. Synthetic chemicals are also not reliable with their inability to provide long-term protection. Many studies have shown that the use of beneficial fungi and bacteria has the potential to prevent and suppress plant parasitic nematodes while keeping the environment safe. Several experiments have demonstrated that bioproducts of microbial origin are cheap, safe, and provide long-lasting biocontrol effects against pathogens both in vitro and field conditions. Therefore, this review aims to discuss mechanisms that beneficial microbes and their products use to successfully suppress plant parasitic nematodes. The review also explains the importance of using commercial bionematicides in the sustainable management of plant parasitic nematodes. The existing challenges that are limiting the full application of beneficial microbes, and what needs to be done to fully utilize biocontrol agents in the management of plant parasitic nematodes have also been discussed. To the best of our knowledge, this review has come at the right time to give researchers and plant growers more options when several synthetic chemical nematicides are being banned by regulatory authorities due to their hazardous effects.

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Control of foliar phytoparasitic nematodes through sustainable natural materials: Current progress and challenges

Abstract: Graphical abstract

Cited by 23 publications

References 115 publications

Characterization of Delonix regia Flowers’ Pigment and Polysaccharides: Evaluating Their Antibacterial, Anticancer, and Antioxidant Activities and Their Application as a Natural Colorant and Sweetener in Beverages

Characterization of Delonix regia Flowers’ Pigment and Polysaccharides: Evaluating Their Antibacterial, Anticancer, and Antioxidant Activities and Their Application as a Natural Colorant and Sweetener in Beverages

Plant growth promoting rhizobacteria (PGPR) and their role in plant-parasitic nematodes control: a fresh look at an old issue

Efficacy of Beneficial Microbes in Sustainable Management of Plant Parasitic Nematodes: A Review

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