Biochemical and Ultrastructural Changes of Some Tomato Cultivars after Infestation with Aphis gossypii Glover (Hemiptera: Aphididae) at Qalyubiyah, Egypt

Helmi, A.; Mohamed, Heba I.

doi:10.1007/s10343-016-0361-9

Cited by 47 publications

(22 citation statements)

References 42 publications

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“…It is known that the process of oxidizing phenols to quinones substances, which are toxic to pathogens due to PPO enzyme. Also, PPO enzyme can function in the following ways: (1) quinines substances produced by PPO may alkylate essential amino acids which decrease plant nutritional quality, (2) sometimes, and through redox cycling, quinones may produce oxidative stress in the gut lumen and (3) from phenolic oxidation, quinone substances produced may be absorbed and have toxic effects on herbivores (Helmi and Mohamed 2016 ). Chandrasekaran and Chun ( 2016 ) indicated that B. subtilis CBR05 treatment showed a significant increase in PPO activity in the leaves of tomato infested with soft rot disease ( Erwinia carotovora subsp.…”

Section: Discussionmentioning

confidence: 99%

Siderophore production by Bacillus subtilis MF497446 and Pseudomonas koreensis MG209738 and their efficacy in controlling Cephalosporium maydis in maize plant

2020

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Late wilt disease, caused by Cephalosporium maydis in maize plant, is one of the main economical diseases in Egypt. Therefore, to cope with this problem, we investigated the potentiality of plant growth promoting rhizobacteria in controlling this disease. Six strains (Bacillus subtilis, B. circulance, B. coagulanse, B. licheniformis, Pseudomonas fluroscence and P. koreensis) were screened for siderophore production, and using dual plate culture method and greenhouse experiment, antagonistic activity against C. maydis was studied. Using two superior strains, single and dual inoculation treatments in maize were applied in field experiment during the 2018 and 2019 seasons. Results indicated that B. subtilis and P. koreensis strains had shown the most qualitative and quantitative assays for siderophore production and antagonistic activities. In greenhouse, the most effective treatments on the pre-and post-emergence damping off as well as growth promotion of maize were T3 treatment (inoculated with B. subtilis), and T8 treatment (inoculated with P. koreensis). In field experiment, T5 treatment (inoculated with a mixture of B. subtilis and P. koreensis) showed significant increases in catalase (CAT), peroxidase (POX) and polyphenol oxidase (PPO) activities, as well as total chlorophyll and carotenoids than control treatments during the two growing seasons. In the same way, the highest effect in reducing infection and increasing the thickness of the sclerenchymatous sheath layer surrounding the vascular bundles in maize stem was observed and these results were a reflection of the increase in yield and yield parameters.

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Section: Discussionmentioning

confidence: 99%

Siderophore production by Bacillus subtilis MF497446 and Pseudomonas koreensis MG209738 and their efficacy in controlling Cephalosporium maydis in maize plant

2020

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“…Despite having a strong killing impact against the above-mentioned insects, it might have the same impact on its family members as well. According to the reported studies, the above mentioned insects are involved in causing irreversible damage to tomato [ 86 , 87 ], cucumber [ 88 ], eggplant, potato, and chili [ 89 ]. Moreover, some insects exhibit chitin in their exoskeleton which can result in resistance to chitosan-based insecticides.…”

Section: Chitosan As An Insecticidementioning

confidence: 99%

The Multifunctional Role of Chitosan in Horticultural Crops; A Review

et al. 2018

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Chitosan is a naturally occurring compound and is commercially produced from seafood shells. It has been utilized in the induction of the defense system in both pre and post-harvest fruits and vegetables against fungi, bacteria, viruses, and other abiotic stresses. In addition to that, chitosan effectively improves the physiological properties of plants and also enhances the shelf life of post-harvest produces. Moreover, chitosan treatment regulates several genes in plants, particularly the activation of plant defense signaling pathways. That includes the elicitation of phytoalexins and pathogenesis-related (PR) protein. Besides that, chitosan has been employed in soil as a plant nutrient and has shown great efficacy in combination with other industrial fertilizers without affecting the soil’s beneficial microbes. Furthermore, it is helpful in reducing the fertilizer losses due to its coating ability, which is important in keeping the environmental pollution under check. Based on exhibiting such excellent properties, there is a striking interest in using chitosan biopolymers in agriculture systems. Therefore, our current review has been centered upon the multiple roles of chitosan in horticultural crops that could be useful in future crop improvement programs.

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“…Carotenoids interact strongly with reactive oxygen species and work as efficient free radical quenchers, singlet oxygen scavengers, lipid antioxidants (some which are precursors of vitamin A) in plant and animal organisms (Aly et al, 2012;Helmi and Mohamed, 2016;Mohamed and Akladious, 2017;Akladious and Mohamed, 2017). Apart from this physiological and medical significance, shifts in carotenoid content and structure may also serve as indicators of environmental harm (Ladislav et al, 2005;Marzorati et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Antioxidant, anti-cancer and ameliorative activities of Spirulina platensis and pomegranate juice against hepatic damage induced by CCl4

El-Beltagi

Dhawi

Ashoush

et al. 2020

Not Bot Horti Agrobo

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Due to the excessive impact of synthetic drugs, unravelling and employing safe, natural alternatives are now needed to resolve a number of diseases. In this research, we have evaluated hepatoprotective and antioxidant activities of Spirulina platensis and pomegranate juice in rats against hepatotoxicity induced by carbon tetrachloride (CCl4). Spirulina crude carotenoid extract was screened by UPLC-MS / MS. Activities of liver marker enzymes; measured aspartate aminotransferase (AST) and alanine aminotransferase (ALT), and determined lipid peroxidation and antioxidant status as reduced glutathione (GSH) in liver homogenate. The infusion of CCl4 (2 ml/kg b.wt) greatly increases levels of liver marker enzymes and lipid peroxidation, resulting in depletion of antioxidants. Treatment of Spirulina platensis (Sp), pomegranate juice (Pj)or mixture (PJSP) of Spirulina water extract 10% and pomegranate juice 90% (1 ml/100 g b.wt) to CCl4-disrupted rats resulted in decreased activity of liver marker enzymes, lipid peroxidation with increased antioxidant status. Chromatographic separation showed that ß-carotene is the predominant carotenoid extract. This carotenoid extract was tested for colon carcinoma (HCT-116), liver carcinoma (HepG2) and intestinal carcinoma cell lines (CACO) LC50 for 21.8, 14 and 11.3 ug / ml, respectively. Total phenolic phytochemicals, total carotenoids and total flavonoids were also measured in Spirulina. Our study clearly demonstrates that Spirulina platensis and pomegranate juice had hepatoprotective effect on CCl4-caused hepatotoxicity in rats through its antioxidant activity.

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Biochemical and Ultrastructural Changes of Some Tomato Cultivars after Infestation with Aphis gossypii Glover (Hemiptera: Aphididae) at Qalyubiyah, Egypt

Cited by 47 publications

References 42 publications

Siderophore production by Bacillus subtilis MF497446 and Pseudomonas koreensis MG209738 and their efficacy in controlling Cephalosporium maydis in maize plant

Siderophore production by Bacillus subtilis MF497446 and Pseudomonas koreensis MG209738 and their efficacy in controlling Cephalosporium maydis in maize plant

The Multifunctional Role of Chitosan in Horticultural Crops; A Review

Antioxidant, anti-cancer and ameliorative activities of Spirulina platensis and pomegranate juice against hepatic damage induced by CCl4

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