Wang Qian, Chen Mengjie, Hao Qianyi, Zeng Hanlai, He Ying
MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
Plants (Basel). 2021 Nov 28;10(12):2610. doi: 10.3390/plants10122610.
Iron (Fe) is one of the most important micronutrients for organisms. Currently, Fe deficiency is a growing nutritional problem and is becoming a serious threat to human health worldwide. A method that could help alleviate this "hidden hunger" is increasing the bioavailable Fe concentrations in edible tissues of major food crops. Therefore, understanding the molecular mechanisms of Fe accumulation in different crop tissues will help to develop crops with higher Fe nutritional values. Biofortification significantly increases the concentration of Fe in crops. This paper considers the important food crop of rice ( L.) as an example and highlights recent research advances on the molecular mechanisms of Fe uptake and allogeneic uptake in different tissues of rice. In addition, different approaches to the biofortification of Fe nutrition in rice and their outcomes are described and discussed. To address the problems that occur during the development and application of improving nutritional Fe in rice, technical strategies and long-term solutions are also proposed as a reference for the future improvement of staple food nutrition with micronutrients.
铁（Fe）是生物体最重要的微量营养素之一。目前，缺铁是一个日益严重的营养问题，正成为全球人类健康的严重威胁。一种有助于缓解这种“隐性饥饿”的方法是提高主要粮食作物可食用组织中的生物可利用铁浓度。因此，了解不同作物组织中铁积累的分子机制将有助于培育出具有更高铁营养价值的作物。生物强化显著提高了作物中铁的浓度。本文以重要粮食作物水稻（Oryza sativa L.）为例，重点介绍了水稻不同组织中铁吸收和异源吸收分子机制的最新研究进展。此外，还描述并讨论了水稻铁营养生物强化的不同方法及其效果。为解决水稻铁营养改良开发与应用过程中出现的问题，还提出了技术策略和长期解决方案，为今后利用微量营养素改善主食营养提供参考。
