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Silicon Dioxide Nanoparticles Induce Innate Immune Responses and Activate Antioxidant Machinery in Wheat Against Rhizoctonia solani
| Content Provider | MDPI |
|---|---|
| Author | Abdelrhim, Abdelrazek S. Mazrou, Yasser S. A. Nehela, Yasser Atallah, Osama O. El-Ashmony, Ranya M. Dawood, Mona F. A. |
| Copyright Year | 2021 |
| Description | 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 $(SiO_{2}$ 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. $SiO_{2}$ 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 $SiO_{2}$ NPs on the growth of wheat seedlings and their potential mechanism (s) for disease suppression was deciphered. $SiO_{2}$ NPs application also improved the germination, vegetative growth, and vigor indexes of infected wheat seedlings which indicates no phytotoxicity on treated wheat seedlings. Moreover, $SiO_{2}$ 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 $SiO_{2}$ 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. |
| Starting Page | 2758 |
| e-ISSN | 22237747 |
| DOI | 10.3390/plants10122758 |
| Journal | Plants |
| Issue Number | 12 |
| Volume Number | 10 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-12-14 |
| Access Restriction | Open |
| Subject Keyword | Plants Horticulture Rhizoctonia Solani Wheat Nanoparticles Silicon Dioxide Root Rot Damping-off Ros Antioxidant |
| Content Type | Text |
| Resource Type | Article |
