Zhang Lianhe, Chu Chengcai
Luoyang Key Laboratory of Plant Nutrition and Environmental Ecology, Agricultural College, Henan University of Science and Technology, Luoyang, 471003, China.
State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, South China Agricultural University, Guangzhou, 510642, China.
Rice (N Y). 2022 Jun 15;15(1):30. doi: 10.1186/s12284-022-00572-6.
Selenium (Se) is an essential trace element for humans and other animals. The human body mainly acquires Se from plant foods, especially cereal grains. Rice is the staple food for more than half of the world's population. Increasing the Se concentration of rice grains can increase the average human dietary Se intake. This review summarizes recent advances in the molecular mechanisms of Se uptake, transport, subcellular distribution, retranslocation, volatilization, and Se-containing protein degradation in plants, especially rice. The strategies for improving Se concentration in rice grains by increasing Se accumulation, reducing Se volatilization, and optimizing Se form were proposed, which provide new insight into Se biofortification in rice by improving the utilization efficiency of Se.
硒（Se）是人类和其他动物必需的微量元素。人体主要从植物性食物中获取硒，尤其是谷物。大米是世界上一半以上人口的主食。提高米粒中的硒浓度可以增加人类的平均膳食硒摄入量。本文综述了植物尤其是水稻中硒吸收、转运、亚细胞分布、再转运、挥发以及含硒蛋白降解的分子机制的最新研究进展。提出了通过增加硒积累、减少硒挥发和优化硒形态来提高米粒中硒浓度的策略，这为通过提高硒利用效率实现水稻生物强化提供了新的见解。
