Plants from the calcium chloride and other salts in the absorption of calcium ions. Calcium ion plant was state of the Ca2 +. Calcium exists primarily on the leaves of the old organs and tissues, it is a relatively easy to move elements. Calcium in the biofilm can be used as phospholipid and protein phosphate bridge between the carboxyl group and thus can maintain the stability of membrane structure.

Cytosol of calcium and soluble protein that calmodulin (also known as calmodulin, camlmodulin, CaM), forming a complex of active Ca.CaM, starting in the metabolic regulation of the "second messenger" role.

Calcium is an element constitute the cell wall, intercellular cell wall layer is composed of calcium from the pectin. Calcium deficiency, the cell wall formation blocked, affecting cell division, or can not form a new cell walls, there multinucleated cells. Therefore, when growth was inhibited calcium deficiency, severe cases these young organs (root tip, stem side) fester necrosis. End rot of tomato, lettuce dieback, celery stem cracking disease, spinach, black heart disease, heart disease are all dried cabbage caused by calcium deficiency.

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