钙在果树生理代谢中的作用

Effects of Calcium in Physiology and Metabolism of Fruit Crops

钙是一种重要营养元素,也是一种具有多种生理功能的细胞内信号分子,它在果树生理代谢中有重要作用。概述近年来果树钙素营养的研究进展,主要包括钙在果树中的形态与分布,吸收与运输,钙的生理功能,钙对激素调控的影响,钙在逆境胁迫中的调控作用,钙对果实品质的影响和提高钙含量的可行措施。

Calcium is an important mineral nu trient.Many of the signal-induced responses are mediated by Ca 2+ .Increased Ca 2+ in the cytoplasm can affect diverse physiological processes through the acti on of calmodulin,a ubiquitous Ca 2+-binding protein.It plays an important role in physiology and metabolism of fruit trees.The progress in the study on calcium nutrition of fruit trees is reviewed in this paper.The main contents include calcium shape and distributin g,absorption and transporta-tion,calcium physiological function,action in ad versity as well as the effect on plant hormone and fruit quality,and put for-ward the feasible measures to improve calcium content.