Explain the physiological role of Iron and Molybdenum in plants
Answers
Answer:
Molybdenum is an essential component in two enzymes that convert nitrate into nitrite (a toxic form of nitrogen) and then into ammonia before it is used to synthesize amino acids within the plant. It also needed by symbiotic nitrogen fixing bacteria in legumes to fix atmospheric nitrogen.
Answer:
Role of Iron
Iron is a constituent of several enzymes and some pigments, and assists in nitrate and sulfate reduction and energy production within the plant. Although iron is not used in the synthesis of chlorophyll (the green pigment in leaves), it is essential for its formation.
Role of Molybdenum
Molybdenum is one of the essential micronutrients. Like manganese, among others, it is only required in small amounts for normal plant development. However, it plays a crucial part in the regulation of various plant functions.
Molybdenum (Mo), the last of the required micronutrients, is needed in the smallest quantities by plants. The normal range for most plant tissue is between 0.3-1.5 ppm and in the growing medium between 0.01-0.20 ppm. Molybdenum deficiency or toxicity is not very common, but its deficiency is seen more frequently in poinsettias. Like any nutrient deficiency or toxicity, it needs to be corrected before there is a negative impact on crop growth and quality.
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