## 6 Future Perspectives  
Diseases caused by pathogens such as fungi or bacteria threaten plant growth and development, especially during the production of horticultural crops. In agricultural production, chemical measures such as pesticide spraying are mainly adopted for disease prevention and control. With the improvement in living standards, the safety of agricultural products has attracted more attention from consumers. It is now urgent to adopt safe, efficient and \"green\" methods to control various disease-related stresses and improve crop yields and quality. Although Si is the second most abundant element in the earth's crust, it is not defined as an essential element for plants. However, its roles in regulating plant responses to various diseases and stresses have been demonstrated. The external application of Si helps to reduce the spraying of pesticides and has broad application prospects in the \"green\" and environmentally friendly management of agriculture. Therefore, understanding the transport of Si from soil into plant cells and the accumulation of Si in plants is essential. In plants, Si transport is an active process, regulated by the specific Si transporters, Lsi1, Lsi2 and Lsi6 which play roles in different parts of the plant. Thus, it is necessary to further study Si transporters in other plants to promote the effective transport of Si. Despite numerous reports on the beneficial roles of Si in enhancing plant resistance to pathogens, it was mainly analyzed from the aspects of physical barrier, physiology and biochemistry, whereas the potential mechanisms related to Si remain largely unclear. In future research, transcriptome, proteome and metabonomics techniques should be used to carry out systematic and comprehensive analyses, in order to clarify the exact pathways of Si and its transporters, to understand their regulation and influence on the transcriptional pathways, as well as the changes of induced metabolites. This will help provide a basis for a \"green\", safe and effective method to regulate against crop adversity. **Author Contributions:** Conceptualization, [PERSON] ([PERSON]) and [PERSON] ([PERSON]); methodology, R.L. and Y.S. ; software, R.L. ; validation, R.L. ; formal analysis, R.L. ; investigation, Y.S. ; resources, R.L. ; data curation, R.L. ; writing--original draft preparation, R.L. ; writing--review and editing, [PERSON] ([PERSON]) and [PERSON] ([PERSON]); visualization, Y.S. ; supervision, Y.S. ; project administration, [PERSON] ([PERSON]) and [PERSON] ([PERSON]); funding acquisition, [PERSON] ([PERSON]) and [PERSON] ([PERSON]). All authors have read and agreed to the published version of the manuscript. **Funding:** This work was supported by the Zhejiang Natural Science Foundation of China (Grant Nos. LY19C150008), the National Natural Science Foundation of China (Grant Nos. 32002048, 31972221, 331872105, 32172595 and 31801862), Lingyan Project of Science and Technology Department of Zhejiang Province (2022C02051), Opening Project Fund of Key Laboratory of Biology and Genetic Resources of Rubber Tree, Ministry of Agriculture and Rural Affairs, P. R. China/State Key Laboratory Breeding Base of Cultivation & Physiology for Tropical Crops/Danzhou Investigation & Experiment Station of Tropical Crops, Ministry of Agriculture and Rural Affairs, P. R. China (RRI-KLOF202102), the National College Students Innovation and Entrepreneurship Training Program in 2019 and 2021 (202110341043 and 201910341005), and the Student Scientific research training program of Zhejiang Agriculture and Forestry University (2021 KX0196 and 2021 KX019), Ministry of Agriculture, the National Key Research and Development Program of China (2018 YFD1000800 and 2019 YFD1000300). **Institutional Review Board Statement:** Not applicable. **Infrared Consent Statement:** Not applicable. **Data Availability Statement:** Not applicable. **Acknowledgments:** This work was supported by the Zhejiang Natural Science Foundation of China (Grant Nos. LY19C150008), the National Natural Science Foundation of China (Grant Nos.