Poletti Susanna, Gruissem Wilhelm, Sautter Christof
Institute of Plant Sciences, Swiss Federal Institute of Technology, ETH Zurich, Universitätstrasse 2, CH-8092 Zurich, Switzerland.
Curr Opin Biotechnol. 2004 Apr;15(2):162-5. doi: 10.1016/j.copbio.2004.03.002.
The low micronutrient content of cereals requires the fortification of food and biofortification of plants. Many laboratories are currently pursuing biofortification using breeding and genetic modification, but progress is challenged by technical hurdles and our understanding of physiological processes. Recent studies have largely been confined to the improvement of levels of iron, zinc, some vitamins and a variety of essential amino acids. Progress has been made in the accumulation of iron, zinc, and vitamins A and E in genetically modified plants. For future success in this area, many more studies will be required on the physiology of ion uptake and on the transport of vitamin precursors.
谷物中微量营养素含量较低，这就需要对食品进行强化以及对植物进行生物强化。目前，许多实验室正在通过育种和基因改造来进行生物强化，但进展受到技术障碍以及我们对生理过程理解的挑战。最近的研究主要局限于提高铁、锌、某些维生素和多种必需氨基酸的含量。在转基因植物中铁、锌以及维生素A和E的积累方面已经取得了进展。为了在这一领域取得未来的成功，还需要对离子吸收生理学和维生素前体的运输进行更多的研究。
