Yasser Nehela - Silicon Dioxide Nanoparticles Induce Innate Immune

Journal article

Abdelrazek S. Abdelrhim, Y. Mazrou, Y. Nehela, O. Atallah, Ranya M. S. El-Ashmony, Mona F. A. Dawood
Plants, 2021

Semantic Scholar DOI PubMedCentral PubMed

Cite

APA Click to copy
Abdelrhim, A. S., Mazrou, Y., Nehela, Y., Atallah, O., El-Ashmony, R. M. S., & Dawood, M. F. A. (2021). Silicon Dioxide Nanoparticles Induce Innate Immune Responses and Activate Antioxidant Machinery in Wheat Against Rhizoctonia solani. Plants.

Chicago/Turabian Click to copy
Abdelrhim, Abdelrazek S., Y. Mazrou, Y. Nehela, O. Atallah, Ranya M. S. El-Ashmony, and Mona F. A. Dawood. “Silicon Dioxide Nanoparticles Induce Innate Immune Responses and Activate Antioxidant Machinery in Wheat Against Rhizoctonia Solani.” Plants (2021).

MLA Click to copy
Abdelrhim, Abdelrazek S., et al. “Silicon Dioxide Nanoparticles Induce Innate Immune Responses and Activate Antioxidant Machinery in Wheat Against Rhizoctonia Solani.” Plants, 2021.

BibTeX Click to copy

@article{abdelrazek2021a,
  title = {Silicon Dioxide Nanoparticles Induce Innate Immune Responses and Activate Antioxidant Machinery in Wheat Against Rhizoctonia solani},
  year = {2021},
  journal = {Plants},
  author = {Abdelrhim, Abdelrazek S. and Mazrou, Y. and Nehela, Y. and Atallah, O. and El-Ashmony, Ranya M. S. and Dawood, Mona F. A.}
}

Abstract

The phytopathogenic basidiomycetous fungus, Rhizoctonia solani, has a wide range of host plants including members of the family Poaceae, causing damping-off and root rot diseases. In this study, we biosynthesized spherical-shaped silicon dioxide nanoparticles (SiO2 NPs; sized between 9.92 and 19.8 nm) using saffron extract and introduced them as a potential alternative therapeutic solution to protect wheat seedlings against R. solani. SiO2 NPs showed strong dose-dependent fungistatic activity on R. solani, and significantly reduced mycelial radial growth (up to 100% growth reduction), mycelium fresh and dry weight, and pre-, post-emergence damping-off, and root rot severities. Moreover, the impact of SiO2 NPs on the growth of wheat seedlings and their potential mechanism (s) for disease suppression was deciphered. SiO2 NPs application also improved the germination, vegetative growth, and vigor indexes of infected wheat seedlings which indicates no phytotoxicity on treated wheat seedlings. Moreover, SiO2 NPs enhanced the content of the photosynthetic pigments (chlorophylls and carotenoids), induced the accumulation of defense-related compounds (particularly salicylic acid), and alleviated the oxidative stress via stimulation of both enzymatic (POD, SOD, APX, CAT, and PPO) and non-enzymatic (phenolics and flavonoids) antioxidant defense machinery. Collectively, our findings demonstrated the potential therapeutic role of SiO2 NPs against R. solani infection via the simultaneous activation of a multilayered defense system to suppress the pathogen, neutralize the destructive effect of ROS, lipid peroxidation, and methylglyoxal, and maintain their homeostasis within R. solani-infected plants.