Uranium and Lead Uptake and Transfer in Plant-Fungi Symbioses

Blood of juvenile rainbow trout (Salmo gairdneri) exposed to lead in water showed increasing lead concentrations as pH of the test water decreased from 10.0 to 6.0. A decrease in pH by 1.0 unit from any reference pH resulted in an increase of blood lead by a factor of 2.1. Since sublethal lead toxicity is related to uptake, these results suggest that toxicity increases as pH decreases. Control experiments indicated that reactions of lead with inorganic constituents of the test water were complete within 3 h and that blood lead was at equilibrium with water lead within 48 h. Therefore, at the time of blood sampling in the pH experiment, both lead complexation processes in the exposure system, plus lead uptake and release from the blood, were at equilibrium. Key words: pH, lead, toxicity, fish, Salmo, blood, equilibrium.

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Effects of binary metal combinations on zinc, copper, cadmium and lead uptake and distribution in Brassica juncea

Journal of Trace Elements in Medicine and Biology ◽

10.1016/j.jtemb.2017.05.007 ◽

2017 ◽

Vol 44 ◽

pp. 32-39 ◽

Cited By ~ 18

Author(s):

Agnieszka Kutrowska ◽

Arleta Małecka ◽

Aneta Piechalak ◽

Wacław Masiakowski ◽

Anetta Hanć ◽

...

Keyword(s):

Brassica Juncea ◽

Lead Uptake ◽

Binary Metal ◽

Cadmium And Lead

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Specific factors affecting lead uptake by food from cooking water

Journal of the Science of Food and Agriculture ◽

10.1002/jsfa.2740340614 ◽

1983 ◽

Vol 34 (6) ◽

pp. 627-637 ◽

Cited By ~ 5

Author(s):

Gloria A. Smart ◽

Marjorie Warrington ◽

Dorothy Dellar ◽

John C. Sherlock

Keyword(s):

Lead Uptake ◽

Factors Affecting ◽

Specific Factors ◽

Cooking Water

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EFFECTS OF CALCIUM HYDROGEN PHOSPHATE ON LEAD UPTAKE BY COWPEA (VIGNA UNGUICULATA)

FUDMA Journal of Sciences ◽

10.33003/fjs-2020-0403-349 ◽

2020 ◽

Vol 4 (3) ◽

pp. 36-42

Author(s):

M. S. Dagari ◽

Mohammed Salisu Musa

Keyword(s):

Vigna Unguiculata ◽

Lead Nitrate ◽

Atomic Absorption Spectrophotometry ◽

Substantial Effect ◽

Human Consumption ◽

Hydrogen Phosphate ◽

Lead Uptake ◽

Cowpea Seeds ◽

Phosphate Fertilization ◽

Phosphate Treatment

The effects of calcium hydrogen phosphate on lead (Pb) uptake by cowpea (Vigna unguiculata) were investigated in a growth chamber experiment coupled with atomic absorption spectrophotometry (AAS) and colorimetry analyses. Cowpea seeds were planted and harvested in soil samples treated with Pb+2 added as lead nitrate at the rates of 0, 1000 and 3000 mg/kg followed by calcium hydrogen phosphate (CaHPO4) at 0, 10, 50 and 250 mg/kg. Increases in shoot yield brought about by phosphate fertilization were observed to oppress the shoot lead concentration as a result of growth dilution, where the actual amount of lead in shoots was unaffected by phosphate treatment. This work revealed that there is no substantial effect on lead uptake by cowpea, as a result of phosphate fertilization. Therefore, phosphate fertilization is a good means of cowpea production with minimal lead uptake and hence safe for human consumption

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Lead-Tolerant Bacteria Can Minimize Lead Toxicity in Plants

RADS Journal of Biological Research & Applied Sciences ◽

10.37962/jbas.v9i1.135 ◽

2018 ◽

Vol 9 (1) ◽

pp. 1-7 ◽

Cited By ~ 1

Author(s):

Tehreem Aslam ◽

Ambreen Ahmed

Keyword(s):

Zea Mays ◽

Anthropogenic Activities ◽

Soil Health ◽

Lead Toxicity ◽

Polluted Soil ◽

Root Structure ◽

Lead Uptake ◽

Soil Lead ◽

Health Promoting ◽

World Environment

In todayâ€™s world, environment is exposed to lead due to various anthropogenic activities. It adversely affects plants as well as microorganisms by disturbing soil health and fertility. Bioremediation is a technique used to sequester heavy metals from the contaminated soil and it can be used to decontaminate the polluted soil. Lead-tolerant plant health promoting rhizobacteria (PHPR) can be used to enhance the efficacy of lead remediation. Lead uptake can be enhanced through bacteria by modifying root structure, secreting metal sequestering molecules in rhizosphere and alleviating lead induced phytotoxicity. For this purpose, lead-resistant auxin-producing bacteria were isolated from the rhizosphere of some plants. These auxin-producing lead-tolerant bacteria were used to treat Zea mays both in the presence and absence of lead-stress under laboratory conditions and its impact on plant growth and biochemical parameters of Zea mays were analysed.

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Biosorption of Pb(II) Ions byKlebsiellasp. 3S1 Isolated from a Wastewater Treatment Plant: Kinetics and Mechanisms Studies

BioMed Research International ◽

10.1155/2015/719060 ◽

2015 ◽

Vol 2015 ◽

pp. 1-12 ◽

Cited By ~ 10

Author(s):

Antonio Jesús Muñoz ◽

Francisco Espínola ◽

Manuel Moya ◽

Encarnación Ruiz

Keyword(s):

Wastewater Treatment ◽

Wastewater Treatment Plant ◽

Treatment Plant ◽

Kinetic Studies ◽

Mechanism Study ◽

Lead Uptake ◽

Equilibrium Studies ◽

Operating Variables ◽

Biosorption Process ◽

Central Composite Experimental Design

Lead biosorption byKlebsiellasp. 3S1 isolated from a wastewater treatment plant was investigated through a Rotatable Central Composite Experimental Design. The optimisation study indicated the following optimal values of operating variables: 0.4 g/L of biosorbent dosage, pH 5, and 34°C. According to the results of the kinetic studies, the biosorption process can be described by a two-step process, one rapid, almost instantaneous, and one slower, both contributing significantly to the overall biosorption; the model that best fits the experimental results was pseudo-second order. The equilibrium studies showed a maximum lead uptake value of 140.19 mg/g according to the Langmuir model. The mechanism study revealed that lead ions were bioaccumulated into the cytoplasm and adsorbed on the cell surface. The bacterium Klebsiellasp. 3S1 has a good potential in the bioremoval of lead in an inexpensive and effective process.

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Some Aspects of Lead Uptake by the Bones

Metals in Bone ◽

10.1007/978-94-009-4920-1_38 ◽

1985 ◽

pp. 395-396

Author(s):

C. A. Baud ◽

S. Bang ◽

C. Kramar ◽

D. Lacotte ◽

H. J. Tochon-Danguy ◽

...

Keyword(s):

Lead Uptake

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