Mineral Nutrition: Potassium
Mineral Nutrition: Potassium
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矿物质营养：钾
DOI：
10.1007/978-3-642-74061-9_4
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发表时间：
1989
期刊：
影响因子：
--
通讯作者：
D. Clarkson
中科院分区：
文献类型：
--
作者：
U. Lüttge;D. Clarkson
虽然钾不被代谢，但它在植物细胞的生化和渗透调节中扮演着许多重要的角色。它参与维持酶的结构，通过其在核糖体与mRNA结合中的作用参与蛋白质的合成，以及维持细胞内的静电平衡和膨胀。在这些相互作用中，它比钠离子更受欢迎。其水化半径较大。K+在生化事件中的重要性长期以来一直受到人们的重视，并在1966年由Evans和Sorger进行了一次经典综述。在关于植物运输的教科书中，“钾”的主题索引覆盖了整整一页(Clarkson 1974，Luttge和Higinbotham 1979)，而对于直到1980年代初的文献，则提供了百科全书式的处理(Luttge和Pitman 1976；Lauchli和Bieleski 1983)。
Although it is not metabolised, potassium plays a number of important roles in biochemistry and osmotic regulation in plant cells. It is involved in the maintenance of enzyme structure, in protein synthesis through its role in the binding of mRNA to ribosomes, and in the maintenance of electrostatic balance and turgor within the cell. In these interactions it is preferred to the sodium ion. the hydrated radius of which is greater. The significance of K+ in biochemical events has been appreciated for a long time and was the subject of a classic review by Evans and Sorger in 1966. In textbooks on transport in plants the subject index for “potassium” covers up to an entire page (Clarkson 1974, Luttge and Higinbotham 1979), and for the literature up to the early 1980’s encyclopedic treatment is provided (Luttge and Pitman 1976; Lauchli and Bieleski 1983).