Effect of silica-based nanomaterials on seed germination and seedling growth of rice (Oryza sativa L.)

Yaqi Jiang, Jie Yang, Mingshu Li, Yuanbo Li, Pingfan Zhou, Quanlong Wang, Yi Sun, Guikai Zhu, Qibin Wang, Peng Zhang*, Yukui Rui*, Iseult Lynch

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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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.

Original languageEnglish
Article number4160
Number of pages15
JournalNanomaterials
Volume12
Issue number23
DOIs
Publication statusPublished - 24 Nov 2022

Bibliographical note

Publisher Copyright:
© 2022 by the authors.

Keywords

  • plant growth
  • rice
  • seed germination
  • silicon-based nanomaterials

ASJC Scopus subject areas

  • General Chemical Engineering
  • General Materials Science

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