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Biochemical Significance of Molybdenum in Crop Plants

Molybdenum in Agriculture - February 1997. Introduction. Many early studies reported the molybdenum (Mo) requirements of bacteria (Bortels, 1930; Horner et al., 1942), fungi (Steinberg, 1936, 1937), green algae (Arnon et al., 1955), and higher plants (Arnon and Stout, 1939) long before recognition of its various biochemical and physiological functions.

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Physiological Aspects of Calcium, Magnesium, and

This chapter addresses the physiological effects of calcium, magnesium, and molybdenum deficiencies in plants. Recent literature has classified mineral element functions in plants according to their biochemical and physiological behaviors rather than according to their concentrations (macronutrients or micronutrients) in plant tissues.

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The neurotransmitter receptor

Feb 16, 1999The molybdenum cofactor (Moco) forms the catalytically active center of all molybdoenzymes except nitrogenase . It consists of a molybdenum coordinated to the unique pterin compound molybdopterin (MPT). The cofactor is highly conserved in Archaea, eubacteria, and eukaryotes . Molybdoenzymes are essential for such diverse metabolic processes as

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Molybdenum

May 21, 2015Molybdenum in Plants All plants require very small amounts of Mo for normal growth and development and Mo and nickel (Ni) are required in the lowest concentrations of all the essential nutrients. Within the plant, Mo is primarily used in the production of "molybdoenzymes" that regulate various plant functions.

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Micronutrients in Crop Production

Plants require very small amounts of some essential elements. These micronutrients are often called minor or trace elements. These nutrients—boron, zinc, molybdenum, iron, manganese, copper, chlorine, and nickel—are needed for plant growth, development, and reproduction. Most Mississippi soils have enough of these nutrients for crop production.

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Biology of the molybdenum cofactor

Mar 09, 2007Introduction. The transition element molybdenum (Mo) is an essential micronutrient for plants, animals, and most micro-organisms (Sigel and Sigel, 2002).In soils, the molybdate anion is the only form of Mo that is available for plants and bacteria (Stiefel, 2002).To this end, more than 50 enzymes are known to contain Mo and most of them occur in bacteria, while in plants only four were

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Role of Molybdenum in Horticultural crops

Role of Molybdenum in Horticultural crops Molybdenum is a trace element found in the soil and is required for growth of most biological organism including plants (0.1-2.0 mg kg-1 plant dry matter) and animals. Specific plant enzymes participate in reduction and oxidative reaction have require molybdenum as a catalyst.

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Molybdenum in soils and plants and its potential

Summarises the role of molybdenum in soils and plants and its potential importance in livestock nutrition in sub-Saharan Africa. Discusses the functions of molybdenum in plants and animals, diagnosis including deficiency symptoms, soil testing leaf analysis, molybdenum content of soils, factors affecting availability of molybdenum to plants, molybdenum responses, and molybdenum

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Molybdenum

Molybdenum is a chemical element with the symbol Mo and atomic number 42. The name is from Neo-Latin molybdaenum, which is based on Ancient Greek Μόλυβδος molybdos, meaning lead, since its ores were confused with lead ores. Molybdenum minerals have been known throughout history, but the element was discovered (in the sense of differentiating it as a new entity from the mineral salts of

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SL405/SS618: Molybdenum (Mo) and Nickel (Ni) for Citrus Trees

Functions of Molybdenum. Assists in the formation of plant proteins. Helps starch, amino acid, and vitamin formation. Acts as a catalyst that aids the conversion of gaseous N to usable forms by nitrogen-fixing microorganisms. Aids in conversion of nitrate to ammonium as a constituent of the plant enzyme nitrogenase. Functions of Nickel

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Nutrients Plants Require for Growth

Table 2. Function and mobility within plant tissue of the 14 soil-derived essential nutrients for plant growth. Essential nutrient Mobility in plant Function of plant Nitrogen good proteins, protoplasts, enzymes Phosphorus good ATP,ADP,basal metabolism Potassium good water relations, energy relations, cold hardiness

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Molybdenum in animals

Molybdenum-containing enzymes catalyze basic metabolic reactions in the nitrogen, sulfur, and carbon cycles. With the exception of the nitrogenase cofactor, molybdenum is incorporated into proteins as the molybdenum cofactor that contains a mononuclear molybdenum atom coordinated to the sulfur atoms of a pterin derivative named molybdopterin.

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What Constitutes Plant

Molybdenum Analysis 319 exposed to elevated carbon dioxide (CO 2) (Hungate et al. 2004). Therefore, understanding the behavior of Mo in soils is crucial to understanding plant uptake of Mo and its role as a potentially limiting factor in N conversion reactions. Much attention has been given to estimating plant-available Mo for the reasons stated

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Macronutrients and Micronutrients

Molybdenum: Mo: 0.1--1: Nickel: Ni: Plant Biochemistry (J.Bonner and J.E. Varner, eds.) Academic Press, London. Please note that concentrations, whether in mg/kg (=ppm, parts per million) or Percent (%), are always based on the weight of dry matter, instead of the fresh weight. Fresh weight includes both the weight of the dry matter and the

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Molybdenum: Function, Deficiency Benefits

Aug 26, 2019Molybdenum is an essential nutrient whose main function is removing toxins, particularly from the metabolism of sulfur containing amino acids. Molybdenum is involved in at least three enzymes

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Hydroponics Systems and Principles Of Plant Nutrition

Jul 10, 2020Plants cannot properly function without 17 essential nutrients. These nutrients are needed so that processes critical to plant growth and development can occur. Micronutrients include iron, manganese, zinc, boron, molybdenum, chlorine, copper, and nickel. The difference between macro- and micronutrients is the amount required by plants

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Molybdenum, functions, food sources, deficiency toxicity

Molybdenum is widespread in the diet. In plant foods, molybdenum content is primarily determined by the regional richness of the soil and in the water used for irrigation and the content in meat depends on forage of the animals 45) and molybdenum uptake by plants is promoted by neutral or alkaline soils 46).

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Essential Nutrients: Functions And Symptoms Of Deficiency

Oct 22, 2012The two main functions of molybdenum in the plant is it makes the element Nitrogen available for the plant to use and it is needed for protein synthesis (creation of chemical combination). The three symptoms of a molybdenum deficiency is interveinal chlorosis in lower leaves, marginal necrosis, and flowers don't form.

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Essential Plant and Animal Micronutrients Molybdenum in

necessary micronutrient for plant growth. Molybdenum is called a micronutrient because plants require it in smaller amounts than the macronutrients—nitrogen (N), phosphorus (P), potassium (K), sulfur (S), calcium (Ca), and magnesium (Mg). Plants take up Mo in the MoO 4 2-ionic form. Mo has several functions in plant growth. Plants

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Journal of Evidence

Molybdenum was known to be essential to plant life long before its essentiality to animals was realized. In 1953, molybdenum's role as a cofactor for the enzyme xanthine oxidase was discovered,1,2 establishing the essentiality of molybdenum in the diet. Molybdenum Form and Function For humans, molybdenum functions as a cofactor for at least 4

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MOLYBDENUM IN RELATION TO GROWTH OF HIGHER

The molybdenum-deficient nodules were smaller than those of normal plants while their colour was not pinkish as usual but yellow or brown-gray. This is in agreement with the pea experiments in nutrient solutions (cf 33)). The results of Table II show that with increasing amounts of added molybdate the molybdenum content of the white clover rose

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Focus on nutritional elements

Molybdenum (Mo) is absorbed by the plant as MoO 4 3--ion. The trace element has an important role in the nitrogen system of the plant. A large number of enzymes in plants do not function without molybdenum. This is especially the case for the enzyme active

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