Induction of New Defensin Genes in Tomato Plants via Pathogens-Biocontrol Agent Interaction

Ee, Hafez

doi:10.4172/2157-7471.1000167

Cited by 5 publications

(1 citation statement)

References 33 publications

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“…Basically, most studies demonstrated the important role of JA/ET-induced pathway protecting Trichoderma -treated plants against different pathogens. Systemic defense responses and resistance largely dependent on JA were observed, for example, in A. thaliana protected by Trichoderma against Botrytis cinerea (Contreras-Cornejo et al., 2011) and in tomato plants protected by Trichoderma viride against F. oxysporum or R. solani (Hafez et al., 2013), while Trichoderma -induced resistance in A. thaliana roots based on JA and ET signaling effectively protected them against P. syringae pv. lachrymans (Mathys et al., 2012).…”

Section: Discussionmentioning

confidence: 99%

Nitric Oxide as a Beneficial Signaling Molecule in Trichoderma atroviride TRS25-Induced Systemic Defense Responses of Cucumber Plants Against Rhizoctonia solani

2019

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In the present study, Trichoderma atroviride TRS25 is presented as a biological control agent, which significantly limits the development of infection and reduces the disease caused by the pathogenic fungus Rhizoctonia solani in cucumber plants ( Cucumis sativus L.). The systemic disease suppression is related to oxidative, signaling, and biochemical changes, that are triggered in response to a pathogen. Induction of systemic defense in cucumber by TRS25 greatly depends on the accumulation of signaling molecules including hydrogen peroxide (H 2 O 2 ) and nitric oxide (NO) as well as salicylic acid (SA) and its derivatives including methyl salicylate (MeSA) and octyl salicylate (OSA). The study established that NO was accumulated in leaves and shoots of the cucumber plants, especially those pretreated with Trichoderma and inoculated with R. solani , where the compound was accumulated mainly in the cells localized in the vascular bundles and in epidermal tissues. We suggest, for the first time, that in the plants pretreated with TRS25, the accumulation of H 2 O 2 and NO may be related to catalase (CAT) and S-nitrosoglutathione reductase (GSNOR) activity decrease. On the other hand, excessive accumulation of NO and SA may be controlled by forming their inactive forms, S-nitrosothiols (SNO) and salicylic acid glucosylated conjugates (SAGC), respectively. The obtained results suggest that the mentioned molecules may be an important component of the complex signaling network activated by TRS25, which is positively involved in systemic defense responses of cucumber plants against R. solani .

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Section: Discussionmentioning

confidence: 99%

Nitric Oxide as a Beneficial Signaling Molecule in Trichoderma atroviride TRS25-Induced Systemic Defense Responses of Cucumber Plants Against Rhizoctonia solani

2019

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Biological Control of Tomato Damping-off Disease Caused by Rhizoctonia solani Kuhn

Amer

Shama

Heflish

et al. 2019

Journal of the Advances in Agricultural Researches

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Tomato Damping-off disease caused by Rhizoctonia solani is considered as one of the most destructive diseases in Egypt. Effect of some biological control agents such as Trichoderma viride, arbuscular mycorrhiza (AM) and Bacillus subtilis, at seven different mixed treatments, was tested for their ability to control in tomato plants against the disease. According to varietal responses test, all the tested isolates of R. solani showed Damping-off symptoms on six tested cultivars; however, they considerably varied in percentages of pre-emergency and post-emergency symptoms. Freda was more susceptible than Alesa cultivar, which was relatively resistant. The combination of AM, with T. viride, and B. subtilis was the most effective in decrease the infection rate of the tested biological control, compared with the other treatments.

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Supplementation of Saussurea costus root alleviates sodium nitrite-induced hepatorenal toxicity by modulating metabolic profile, inflammation, and apoptosis

Elshaer,

Hamad,

Sobhy

et al. 2024

Front. Pharmacol.

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Sodium nitrite (NaNO2) is a widely used food ingredient, although excessive concentrations can pose potential health risks. In the present study, we evaluated the deterioration effects of NaNO2 additives on hematology, metabolic profile, liver function, and kidney function of male Wistar rats. We further explored the therapeutic potential of supplementation with S. costus root ethanolic extract (SCREE) to improve NaNO2-induced hepatorenal toxicity. In this regard, 65 adult male rats were divided into eight groups; Group 1: control, Groups 2, 3, and 4 received SCREE in 200, 400, and 600 mg/kg body weight, respectively, Group 5: NaNO2 (6.5 mg/kg body weight), Groups 6, 7 and 8 received NaNO2 (6.5 mg/kg body weight) in combination with SCREE (200, 400, and 600 mg/kg body weight), respectively. Our results revealed that the NaNO2-treated group shows a significant change in deterioration in body and organ weights, hematological parameters, lipid profile, and hepatorenal dysfunction, as well as immunohistochemical and histopathological alterations. Furthermore, the NaNO2-treated group demonstrated a considerable increase in the expression of TNF-α cytokine and tumor suppressor gene P53 in the kidney and liver, while a significant reduction was detected in the anti-inflammatory cytokine IL-4 and the apoptosis suppressor gene BCL-2, compared to the control group. Interestingly, SCREE administration demonstrated the ability to significantly alleviate the toxic effects of NaNO2 and improve liver function in a dose-dependent manner, including hematological parameters, lipid profile, and modulation of histopathological architecture. Additionally, SCREE exhibited the ability to modulate the expression levels of inflammatory cytokines and apoptotic genes in the liver and kidney. The phytochemical analysis revealed a wide set of primary metabolites in SCREE, including phenolics, flavonoids, vitamins, alkaloids, saponins and tannins, while the untargeted UPLC/T-TOF–MS/MS analysis identified 183 metabolites in both positive and negative ionization modes. Together, our findings establish the potential of SCREE in mitigating the toxic effects of NaNO2 by modulating metabolic, inflammatory, and apoptosis. Together, this study underscores the promise of SCREE as a potential natural food detoxifying additive to counteract the harmful impacts of sodium nitrite.

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Induction of New Defensin Genes in Tomato Plants via Pathogens-Biocontrol Agent Interaction

Cited by 5 publications

References 33 publications

Nitric Oxide as a Beneficial Signaling Molecule in Trichoderma atroviride TRS25-Induced Systemic Defense Responses of Cucumber Plants Against Rhizoctonia solani

Nitric Oxide as a Beneficial Signaling Molecule in Trichoderma atroviride TRS25-Induced Systemic Defense Responses of Cucumber Plants Against Rhizoctonia solani

Biological Control of Tomato Damping-off Disease Caused by Rhizoctonia solani Kuhn

Supplementation of Saussurea costus root alleviates sodium nitrite-induced hepatorenal toxicity by modulating metabolic profile, inflammation, and apoptosis

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