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The role of manganese in plants

 
The importance of Manganese in plants

As a part of the plant's enzyme system, manganese element activates several metabolic processes. This element is a component of pyruvate carboxylase, which is involved in the phenomenon of oxidation reduction in photosynthesis, and its presence is mandatory. Manganese element oxidizes indoleacetic acid in plants by activating indoleacetic acid oxidase. This element plays an important role in the nutrition of cereals, potatoes, vegetables and peaches. Manganese is the most abundant element in the soil after iron and they are synergistic with each other.
Manganese element has low and limited mobility in plants. Non-observance of the principles of optimal use of water and fertilizer, dry and calcareous areas show the lack of this element. Also, the presence of a lot of organic matter in the soil reduces the available manganese. On the other hand, one of the factors that increases the absorption of this element and creates a synergistic state is the use of nitrogen, which causes better absorption of manganese due to acidification of the environment.
In summary, manganese element is used for photosynthesis, nitrogen (nitrogen) metabolism and the formation of other compounds that are necessary for plant metabolism. Manganese element is involved in electron transfer reactions in plants and plays a role in chlorophyll production, hence the role of manganese in plants. Its participation in composite systems is considered.
Since manganese is a less mobile element in the plant, the initial symptoms of its deficiency appear in the young parts and leaves first. During the deficiency of manganese, the leaves are weak and appear as spots between the veins, the chlorotic spots are light green to yellow and the leaves fall earlier. The growth of the branches is less and the texture of their wood is fine and sometimes the terminal dryness is also observed in severe manganese deficiency. Due to the reduction of photosynthesis, flowering and fruit formation also decrease and subsequently the size of the fruit decreases.
The 18% complexed manganese fertilizer of Sepehr Parmis Technology Company has a very high performance in eliminating the deficiency symptoms and meeting the needs of the plant, so that in a short period of time and with spraying solution (in unsuitable soil conditions) it can completely meet the needs of the plant. This product consumes very little, but it creates high functional effects. He used this fertilizer even one month before harvest to improve marketability and improve the quality of garden and agricultural products.
The prominent role of manganese in plants is its participation in complex systems. For example, this element is known as a part of the arginar and phosphotransferase enzyme system. Manganese is involved in electron transfer reactions in plants and also plays a role in chlorophyll production. Most of the manganese is in the leaves and stems of plants, and its amount is negligible in the seeds of plants. Manganese interacts with iron in the plant, and the presence of large amounts of it in the soil can affect the absorption and consumption of iron by the plant. This issue (i.e. iron deficiency by manganese) aggravates the problems caused by manganese toxicity in the plant. Manganese deficiency is usually seen in organic soils and soils with an alkaline reaction.

Plants sensitive to Manganese deficiency

Plants have different sensitivities to manganese deficiency. For example, wheat, potato, soybean, oat, sorghum, sugar beet, beans, peas, onion, spinach and lettuce among the crops and among the fruit trees, peaches show the most sensitivity to the deficiency of this element. give On the other hand, cotton has the least sensitivity to manganese deficiency.

Deficiency and excess of Manganese element in plants

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Due to the fact that the mobility of this element is low in different plant tissues, therefore, deficiency symptoms are first observed in young plant tissues. In small grains, manganese deficiency is characterized by the appearance of brown spots on the margins of the upper leaves. In plants, chlorosis caused by manganese deficiency appears as a light green color in the margins of young leaves, and the areas around the veins remain dark green. As the manganese deficiency becomes more severe, these pale green areas spread on the surface of the leaf, their color becomes brighter, and white spots appear on them. In acute conditions, these symptoms can also be seen in the older leaves of the plant.
By using fertilizers containing manganese, in addition to increasing the production and enrichment of agricultural products, which in turn is important for ensuring the health of the society, the seeds enriched with manganese enjoy more initial growth during cultivation.
Manganese ions are transferred to plant leaves after they are absorbed from the soil. A small amount of manganese can damage the plant mechanism. Manganese in the plant body causes water to split into two elements, hydrogen and oxygen, and this problem damages the plant.
Manganese has two types of effects in plants. Both the lack of manganese is harmful to the plant and its high amount causes plant poisoning. As the pH of the soil decreases, the amount of manganese in the plant decreases. A high and toxic amount of manganese in plants causes destruction of cell walls, wilting of leaves and brown spots on leaves. Manganese deficiency also has these effects. In fact, the amount of manganese required by the plant is an intermediate amount that is considered between the deficiency of manganese and the toxic state for the plant.

Effective factors in Manganese deficiency

1) Sandy soils and soils with a lot of organic matter
2) Soft soils
3) High acidity (PH) of the soil
4) Going through long periods of cold
5) High humidity
6) High amounts of calcium and copper elements