The excellent properties of nanomaterials have been confirmed in many fields, but their effects on plants are still unclear. In this study, different concentrations of bismuth vanadate (BV) were added to the growth medium to analyze the growth of seedlings, including taproots, lateral roots, leaf stomata, root activity, and superoxide anion O₂^.- generation. Gene expression levels related to root growth were determined by quantitative PCR in Arabidopsis thaliana. The results showed that BV promoted the growth of taproots and the development of lateral roots, enhanced the length of the extension zone in roots, increased the number and size of leaf stomata and root activity, reduced the accumulation of ROS in seedlings, and changed the expression levels of genes related to polyamines or hormones. At the same time, we investigated the antibacterial activity of BV against a variety of common pathogens causing crop diseases. The results showed that BV could effectively inhibit the growth of Fusarium wilt of cotton and rice sheath blight. These results provide a new prospect for the development of nanomaterial-assisted plants, which is expected to become one of the ways to solve the problem of controlling and promoting the development of plants. At the same time, it also provides a reference for the study of the effect of BV on plants.

纳米材料的优异性能已在许多领域得到证实，但其对植物的影响尚不清楚。在本研究中，将不同浓度的钒酸铋 (BV) 添加到生长培养基中以分析幼苗的生长，包括主根、侧根、叶气孔、根系活动和超氧阴离子 O ₂ ^.-生成。通过定量 PCR 确定与根生长相关的基因表达水平拟南芥. 结果表明，BV促进了主根的生长和侧根的发育，增加了根系延伸区的长度，增加了叶气孔的数量和大小和根系活性，减少了幼苗中ROS的积累，改变了多胺或激素相关基因的表达水平。同时，我们研究了 BV 对引起作物病害的多种常见病原体的抗菌活性。结果表明，BV能有效抑制棉花枯萎病和水稻纹枯病的生长。这些结果为纳米材料辅助植物的发展提供了新的前景，有望成为解决控制和促进植物发育问题的途径之一。同时，