【摘要】 铁（Fe）是植物生长必需的微量元素,适宜的铁含量有利于植物的正常生长和发育。在吸收铁这一生理过程中,禾本科植物和非禾本科植物吸收铁的价态不同,并且铁在植物体内的运输过程也存在着二价与三价铁的相互转化。铁还原酶基因(Fe³⁺chelate reductase,FRO)具有将三价铁还原成二价铁的功能。因此,在分子水平上研究FRO的具体功能具有非常重要的意义。综述了拟南芥、番茄、大豆、水稻、花生及蒺藜苜蓿等FRO基因在亚细胞定位、还原对象、诱导条件及调控或影响因素等方面的研究进展,以期为后续研究铁的吸收机制奠定理论基础。更多还原

【Abstract】 Fe is an essential microelement for plants’ growth,and the appropriate iron content is beneficial to the normal growth and development of plants. In terms of the physiological process of absorbing iron,the monocotyledon plants and the non-monocotyledon plants are different in valence state,and the transformation between Fe²⁺ and Fe³⁺ exists in the transport process of iron in plants. Fe³⁺ chelate reductase gene FRO have the function of reducing Fe³⁺ to Fe²⁺,thus it is of great significance to study the specific function and regulation mechanism of FRO at the molecular level. In this paper,subcellular localization,reduction objects,induction conditions of FRO in Arabidopsis thaliana,tomato,soybean,rice,peanut and Tribulus terrestris are reviewed aiming at providing a theoretical basis for studying Fe uptake mechanism.更多还原