Excess lead alters growth, metabolism and translocation of certain nutrients in radish

To elucidate the deleterious effects of excess lead on radish ( Raphanus sativus) cv. Jaunpuri plants were grown in refined sand in complete nutrient solution for 30 days. On the 31st day lead nitrate was superimposed at 0.1 and 0.5 mM to radish for 65 days. A set of plants in complete nutrient solu...

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Bibliographic Details
Published in:Chemosphere (Oxford) 2008-02, Vol.70 (9), p.1539-1544
Main Authors: Gopal, Rajeev, Rizvi, Aqeel Hasan
Format: Article
Language:English
Subjects:
acid phosphatase
Acid Phosphatase - metabolism
Animal, plant and microbial ecology
Applied ecology
Biological and medical sciences
Biological Transport - drug effects
Chlorophyll - metabolism
chlorosis
Ecotoxicology, biological effects of pollution
Effects of pollution and side effects of pesticides on plants and fungi
Enzyme activity
Fundamental and applied biological sciences. Psychology
Iron - metabolism
Lead
Lead - pharmacology
metabolism
Nitrates - pharmacology
nutrient transport
Nutrients
peroxidase
Peroxidase - metabolism
phosphorus
Phosphorus - metabolism
phytotoxicity
plant growth
Plant Leaves - drug effects
Plant Leaves - growth & development
Plant Leaves - metabolism
plant physiology
Plant Proteins - metabolism
Radish
radishes
Raphanus - drug effects
Raphanus - growth & development
Raphanus - metabolism
Raphanus sativus
ribonucleases
Ribonucleases - metabolism
soil pollution
sulfur
Sulfur - metabolism
translocation (plant physiology)
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Summary:To elucidate the deleterious effects of excess lead on radish ( Raphanus sativus) cv. Jaunpuri plants were grown in refined sand in complete nutrient solution for 30 days. On the 31st day lead nitrate was superimposed at 0.1 and 0.5 mM to radish for 65 days. A set of plants in complete nutrient solution was maintained as control for the same period without lead. Excess Pb at 0.5 mM showed growth depression with interveinal chlorosis on young leaves at apex. Excess Pb reduced the fresh and dry weight pronouncedly at d 65. Lead accumulation reduced the concentration of chlorophyll, iron, sulphur (in tops), Hill reaction activity and catalase activity whereas increased the concentration of phosphorus, sulphur (in roots) and activity of peroxidase, acid phosphatase and ribonuclease in leaves of radish.
ISSN:0045-6535
1879-1298
DOI:10.1016/j.chemosphere.2007.08.043