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cobalt metabolism in plants

Cobalt Metabolism in Plants Biocyclopedia

Cobalt Metabolism in Plants Interactions between cobalt and several essential enzymes have been demonstrated in plants and animals. Two metal-bound intermediates formed by CO 2 + activate ribulose-1,5 bisphosphate carboxylase/ oxygenase (EC 4.1.1.39).Studies by electron paramagnetic resonance (EPR) spectroscopy have shown the activity to be dependent on the concentration of ribulose 1,5

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Effects of cobalt on plants SpringerLink

Apr 01, 1994· Cobalt, a transition element, is an essential component of several enzymes and co-enzymes. It has been shown to affect growth and metabolism of plants, in different degrees, depending on the concentration and status of cobalt in rhizosphere and soil. Cobalt interacts with other elements to form complexes. The cytotoxic and phytotoxic activities of cobalt and its compounds depend on the

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Cobalt metabolism and toxicology--a brief update

Cobalt metabolism and toxicology are summarized. The biological functions of cobalt are updated in the light of recent understanding of cobalt interference with the sensing in almost all animal cells of oxygen deficiency (hypoxia). Cobalt (Co(2+)) stabilizes the transcriptional activator hypoxia-ind

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Cobalt (Co) is trace element affects the formation of

Cobalt (Co) trace element (required amount for plants up to 12 mg/kg of dry weight), which is an integral part of vitamin B12 and has a positive effect on the formation of nitrogen-assimilating nodule bacteria in legumes; improves the growth and development of plants through the interaction of cell hormones in auxin metabolism; participates in redox reactions, photosynthesis (increases the

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(PDF) Cobalt Toxicity Effects on Growth and Metabolism of

When present in iota amounts, metals such as copper (Cu), cobalt (Co), manganese (Mn), chromium (Cr) and zinc (Zn) are essential to plant metabolism and play a significant role in plant growth and

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Cobalt metabolism and toxicology--a brief update

Cobalt metabolism and toxicology are summarized. The biological functions of cobalt are updated in the light of recent understanding of cobalt interference with the sensing in almost all animal cells of oxygen deficiency (hypoxia). Cobalt (Co(2+)) stabilizes the transcriptional activator hypoxia-ind

More

(PDF) Cobalt Toxicity Effects on Growth and Metabolism of

When present in iota amounts, metals such as copper (Cu), cobalt (Co), manganese (Mn), chromium (Cr) and zinc (Zn) are essential to plant metabolism and play a significant role in plant growth and

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Cobalt International Plant Nutrition Institute

affect the growth and metabolism of plants. In some low-Co conditions, a small increase in Co stimulates growth for both simple algae and higher plants. However, high Co concentrations can become toxic to plants. Cobalt is actively absorbed by roots as Co2+, and it can be moderately mobile within plants by complexing with organic compounds.

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Effects of cobalt on plants Semantic Scholar

Cobalt, a transition element, is an essential component of several enzymes and co-enzymes. It has been shown to affect growth and metabolism of plants, in different degrees, depending on the concentration and status of cobalt in rhizosphere and soil. Cobalt interacts with other elements to form complexes. The cytotoxic and phytotoxic activities of cobalt and its compounds depend on the physico

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Cobalt in plants and soil

Cobalt. Cobalt is a trace element in plants (it has not been proven to be essential for plant life). It is a component of a number of enzymes and increases the drought resistance of seeds. In legumes, cobalt is important for nitrogen fixation by the bacteria that associate with legumes. It is also a component of vitamin B12 so is important for

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Beneficial Effects of Cobalt on Plants Biocyclopedia

Cobalt has long been known to be a micronutrient for animals, including human beings, where it is a constituent of vitamin B12. However, its presence and function has not been recorded to the same extent in higher plants as in animals, leading to the suggestion that vegetarians and herbivorous animals need to ingest extra cobalt or vitamin B12 in diets to prevent deficiency

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A critical review on toxicity of cobalt and its

Jun 24, 2020· The cobalt toxicity on growth and metabolism of tomato plants was studied in sand medium at five levels of concentration, i.e. 0, 0.05, 0.1, 0.4 and 0.5 mM. Strong effects of cobalt on tomato were observed at 0.5 mM after 3 days of metal supply. The prominent symptoms were appearance of chlorosis on young leaves followed by necrosis and withering.

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Relationship between Vitamin B12 and Cobalt Metabolism in

Cobalt, as a trace element, is essential for rumen microorganisms for the formation of vitamin B12. In the metabolism of mammals, vitamin B12 is an essential part of two enzymatic systems involved in multiple metabolic reactions, such as in the metabolism of carbohydrates, lipids, some amino acids and DNA. Adenosylcobalamin and methylcobalamin are coenzymes of methylmalonyl coenzyme A (CoA

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Determination of Co(II) in plant tissue by microwave

INTRODUCTION: The cobalt is an essential element for leguminous plants but may be harmful for other species; for that reason determination of Co(II) is very important for the management of polluted areas and for discover plants with capacity for the hyperaccumulation of heavy metals, which has produced a growing necessity of fast, sensitive and

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Physiological Importance of Manganese, Cobalt and Nickel

Jan 01, 2018· Finally, although Cobalt (Co) is not an essential plant metabolism nutrient, it is considered as a beneficial element, participating in symbiotic N fixation. It is taken by plants as Co 2 +. The physiological roles of Ni, Mn, and Co for plant metabolism and growth, their uptake, together with the utilization efficiency, and transport mechanisms

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Copper and cobalt accumulation in plants: a critical

In the aquatic plant C. helmsii, Cu was found to be almost exclusively bound by oxygen ligands, likely organic acids, and not sulphur ligands (Küpper et al., 2009). The concentration of organic acids in Crassulacean Acid Metabolism (CAM) plants may be so high that it is not limiting for Cu complexation.

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Cobalt metabolism and toxicology—A brief update

Aug 15, 2012· 3. Metabolism of cobalt. For optimizing biomonitoring of systemic human exposure to toxic metals, and for valid interpretation of the results, it is essential to consider their metabolism and toxicokinetics (see, e.g. Christensen, 1995). The metabolism of cobalt (and its radioisotopes) has been studied both in man and in laboratory animals.

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Role of Cobalt in Plants: Its Stress and Alleviation

Apr 26, 2020· Out of these, some of the heavy metals are substantial environmental pollutants and produce toxic effects which create ecological havoc. When present in iota amounts, metals such as copper (Cu), cobalt (Co), manganese (Mn), chromium (Cr) and zinc (Zn) are essential to plant metabolism and play a significant role in plant growth and productivity.

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Relationship between Vitamin B12 and Cobalt Metabolism in

Oct 12, 2020· Cobalt, as a trace element, is essential for rumen microorganisms for the formation of vitamin B12. In the metabolism of mammals, vitamin B12 is an essential part of two enzymatic systems involved in multiple metabolic reactions, such as in the metabolism of

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