文献类型： 外文期刊

作者： Chang, Shuo ¹ ; Sun, Feiyang ¹ ; Ren, Yong ² ; Zhang, Minghua ⁴ ; Pan, Shenggang ¹ ; Liu, Haidong ⁵ ; Li, Wu ⁶ ; Mo, Zhaowen ¹ ;

作者机构： 1.South China Agr Univ, Coll Agr, State Key Lab Conservat & Utilizat Subtrop Agrobio, Guangzhou 510642, Peoples R China

2.Yulin Normal Univ, Coll Biol & Pharm, Educ Dept Guangxi Zhuang Autonomous Reg, Key Lab Conservat & Utilizat Subtrop Bioresources, Yulin 537000, Peoples R China

3.Yulin Normal Univ, Guangxi Key Lab Agr Resources Chem & Biotechnol, Yulin 537000, Peoples R China

4.South China Agr Univ, Minist Educ, Coll Engn, Key Lab Key Technol South Agr Machine & Equipment, Guangzhou 510642, Guangdong, Peoples R China

5.Acad Hezhou Agr Sci, Res Inst Oil Crop, Hezhou, Peoples R China

6.Guangdong Acad Agr Sci, Crops Res Inst, Guangdong Prov Key Lab Crop Genet Improvement, Guangzhou 510640, Guangdong, Peoples R China

7.Guangzhou Key Lab Sci & Technol Fragrant Rice, Guangzhou 510642, Peoples R China

8.Sci Observing & Expt Stn Crop Cultivat South China, Minist Agr & Rural Affairs, Guangzhou 510642, Peoples R China

关键词： Silicon dioxide nanoparticles; Interaction between light and nitrogen; Fragrant rice; Biomass; Physiological responses; Plant stress

期刊名称：SILICON （ 影响因子：3.4； 五年影响因子：3.2 ）

ISSN： 1876-990X

年卷期： 2024 年

页码：

收录情况： SCI

摘要： Nanoparticles have been widely used in agriculture, but few studies have reported the effect of silicon dioxide nanoparticles (SiO2NPs) application on rice growth. This study is the first to investigate the effect of SiO2NPs on rice under the interaction of light and nitrogen. This study aimed to investigate the effects of SiO2NPs on the growth, antioxidant response, and nitrogen metabolism of rice seedlings under different light and nitrogen conditions. Two fragrant rice cultivars, Meixiangzhan 2 and 19 Xiang, were grown under four SiO2NPs concentrations (SiO2NPs at 0 mg L-1, 50 mg L-1, 100 mg L-1, and 500 mg L-1) and four light and nitrogen levels. The results showed that the application of SiO2NPs significantly affected root and shoot length, total fresh weight, dry weight, and some physiological parameters. The application of SiO2NPs resulted in changes in growth and physiological parameters, which varied with different light and nitrogen levels. The total dry weight significantly increased after the application of SiO2NPs at 50 mg L-1 under normal light and nitrogen conditions by 28.95% and 15.81% for Meixiangzhan 2 and 19 Xiang, respectively. In addition, the application of SiO2NPs modified the superoxide dismutase activity, nitrate reductase activity, soluble protein content, and hydrogen peroxide content under different light and nitrogen conditions. The correlation between the investigated parameters under the application of SiO2NPs at different light and nitrogen levels was assessed. Overall, this study suggested that the application of SiO2NPs alleviates light stress and nitrogen deficiency stress by regulating soluble protein content, nitrite reductase activity and the antioxidant reaction system, thus promoting rice growth. This study provides theoretical support for the application of nano-fertilizer technology and SiO2NPs to alleviate low light stress in rice.