Magnesium and Calcium

Magnesium and Calcium:


Magnesium is a constituent of chlorophyll molecule that can’t be formed without magnesium. It has an essential role in carbohydrate metabolism and the binding of ribosomal sub-units. Magnesium is the activator of numerous enzymes included in DNA and RNA synthesis. It behaves as a phosphorus carrier and activates enzymes like PEP carboxylase and RuBP carboxylase.

Deficiency symptoms:

a. Interveinal chlorosis occurs.
b. Anthocyanin pigment deposition occurs after chlorosis.
c. Necrotic spots come out in acute situations.


Calcium forms a significant constituent of the cell wall engaging in the middle lamella as calcium pectate. It has a significant role in the formation of plasma membrane. Calcium plays a role in mitotic cell division and is a constituent of enzymes such as adenyl kinase and phospholipase where it acts as an activator.

Deficiency symptoms:

a. It affects the carbohydrate metabolism.
b. The procedure of respiration is badly affected as number of mitochondria is reduced.
c. Meristematic tissues are affected and root and leaf tips die.
d. Cell wall might become rigid or brittle.

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