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- Title
Effect of Silica-Based Nanomaterials on Seed Germination and Seedling Growth of Rice (Oryza sativa L.).
- Authors
Jiang, Yaqi; Yang, Jie; Li, Mingshu; Li, Yuanbo; Zhou, Pingfan; Wang, Quanlong; Sun, Yi; Zhu, Guikai; Wang, Qibin; Zhang, Peng; Rui, Yukui; Lynch, Iseult
- Abstract
The application of nanomaterials (NMs) in agriculture has become a global concern in recent years. However, studies on their effects on plants are still limited. Here, we conducted a seed germination experiment for 5 days and a hydroponics experiment for 14 days to study the effects of silicon dioxide NMs(nSiO2) and silicon carbide NMs(nSiC) (0,10, 50, 200 mg/L) on rice (Oryza sativa L.). Bulk SiO2 (bSiO2) and sodium silicate (Na2SiO3) were used as controls. The results showed that nSiO2 and nSiC increased the shoot length (11–37%, 6–25%) and root length (17–87%, 59–207%) of germinating seeds, respectively, compared with the control. Similarly, inter-root exposure to nSiO2, bSiO2, and nSiC improved the activity of aboveground catalase (10–55%, 31–34%, and 13–51%) and increased the content of trace elements magnesium, copper, and zinc, thus promoting the photosynthesis of rice. However, Na2SiO3 at a concentration of 200 mg/L reduced the aboveground and root biomass of rice by 27–51% and 4–17%, respectively. This may be because excess silicon not only inhibited the activity of root antioxidant enzymes but also disrupted the balance of mineral elements. This finding provides a new basis for the effect of silica-based NMs promotion on seed germination and rice growth.
- Subjects
GERMINATION; RICE; RICE hulls; NANOSTRUCTURED materials; SILICA; SEEDLINGS
- Publication
Nanomaterials (2079-4991), 2022, Vol 12, Issue 23, p4160
- ISSN
2079-4991
- Publication type
Article
- DOI
10.3390/nano12234160