State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Environment, Resource, Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China.
Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental Resource Sciences, Zhejiang University, Hangzhou 310058, China.
Int J Mol Sci. 2023 Jul 18;24(14):11587. doi: 10.3390/ijms241411587.
Cadmium (Cd) contamination in rice grains is posing a significant threat to global food security. To restrict the transport of Cd in the soil-rice system, an efficient way is to use the ionomics strategy. Since calcium (Ca) and Cd have similar ionic radii, their uptake and translocation may be linked in multiple aspects in rice. However, the underlying antagonistic mechanisms are still not fully understood. Therefore, we first summarized the current knowledge on the physiological and molecular footprints of Cd translocation in plants and then explored the potential antagonistic points between Ca and Cd in rice, including exchange adsorption on roots, plant cell-wall composition, co-transporter gene expression, and transpiration inhibition. This review provides suggestions for Ca/Cd interaction studies on rice and introduces ionomics research as a means of better controlling the accumulation of Cd in plants.
镉（Cd）污染对全球粮食安全构成了重大威胁。为了限制土壤-水稻系统中镉的迁移，一种有效的方法是利用离子组学策略。由于钙（Ca）和镉具有相似的离子半径，它们在水稻中的吸收和转运可能在多个方面相关。然而，其潜在的拮抗机制仍不完全清楚。因此，我们首先总结了目前关于植物中镉转运的生理和分子特征的知识，然后探讨了钙和镉在水稻中的潜在拮抗点，包括根的交换吸附、植物细胞壁组成、共转运体基因表达和蒸腾抑制。本综述为水稻中钙/镉相互作用研究提供了建议，并介绍了离子组学研究作为更好地控制植物中镉积累的一种手段。
