The strawberry is one of the most prevalent fruit due to its high economic and nutritional value (Sun et al. 2020). In plants, much evidence implied that many exogenous substances can regulate ascorbic acid (AsA) content, including phytohormones, rare earth elements (REEs) and trace elements (Shan et al. 2018a, Zhang et al. 2020, Aksakal 2022. Lanthanum (La) belongs to the REE group, which is constituted of 17 elements due to their physical and chemical similarity. For strawberries, it has been documented that lanthanum nitrate (La(NO 3 ) 3 ) improved the AsA content in fruit (Shan et al. 2017(Shan et al. , 2018a. Meanwhile, Shan et al. (2017) also found that La(NO 3 ) 3 improved AsA content by enhancing the activities and transcript levels of glutathione reductase (GR), monodehydroascorbate reductase (MDHAR), dehydroascorbate reductase (DHAR) and l-galactono-1,4-lactone dehydrogenase (GalLDH), and down-regulating the activities and transcript levels of ascorbate peroxidase (APX) and ascorbic acid oxidase (AAO). While the deep mechanism of La(NO 3 ) 3 in improving AsA content in fruit is still not fully elucidated.Phytohormones have important roles in regulating fruit growth and development (Khew et al. 2020, Ali et al. 2022, Fan et al. 2022. In plants, there are many important hormones, such as jasmonic acid (JA) and abscisic acid (ABA). JA plays a considerable role in regulating plant growth and development and