Protective Effect of Humic acid and Chitosan on Radish (Raphanus sativus, L. var. sativus) Plants Subjected to Cadmium Stress
Journal Title: Журнал ÑтреÑÑ-физиологии и биохимии - Year 2011, Vol 7, Issue 2
Abstract
Background Humic acid or chitosan has been shown to increase plant growth, yield and improving physiological processes in plant, but its roles on alleviating the harmful effect of cadmium on plant growth and some physiological processes in plants is very rare. Pot experiments were conducted to study the role of 100 and 200 mg/kg dry soil from either humic acid or chitosan on counteracted the harmful effects of cadmium levels (100 and 150 mg/kg dry soil) on radish plant growth and some physiological characters Results Cadmium at 100 and 150 mg kg[sup]-1[/sup] soil decreased significantly length, fresh and dry weights of shoot and root systems as well as leaf number per plant in both seasons. Chlorophyll, total sugars, nitrogen, phosphorus, potassium, relative water content, water deficit percentage and soluble proteins as well as total amino acids contents were also decreased. Meanwhile, cadmium concentration in plants was increased. On the other hand, application of chitosan or humic acid as soil addition at the concentration of 100 or 200 mg kg[sup]-1[/sup] increased all the above mentioned parameters and decreased cadmium concentrations in plant tissues. Chitosan at 200 mg kg[sup]-1[/sup] was the most effective than humic acid at both concentrations in counteracting the harmful effect of cadmium stress on radish plant growth. Conclusion In conclusion, both natural chelators, in particular, chitosan at 200 mg/kg dry soil can increase the capacity of radish plant to survive under cadmium stress due to chelating the Cd in the soil, and then reduced Cd bio-availability.
Authors and Affiliations
S. Farouk, A. Mosa, Heba Ibrahim
Keywords
Related Articles
- EP ID EP160530
- DOI -
- Views 114
- Downloads 0
The influence of high Cd2+ concentrations on lipid peroxidation and antioxidant system function of wheat (Triticum aestivum) and rye (Secale cereale) etiolated shoots
The influence of high Cd[sup]2+[/sup] concentrations on lipid peroxidation and antioxidant system function of winter wheat ([i]Triticum aestivum[/i]) and rye ([i]Secale cereale[/i]) etiolated shoots. It is shown that eti...
Genotypic Variation for Salinity Tolerance in Sorghum (Sorghum bicolor (L.) Moench) Genotypes at Early Growth Stages
Sorghum ([i]Sorghum bicolor[/i] L. Moench) is the fifth most economically important crop among cereals in the world. Salinity is an abiotic factor which reduces productivity of sorghum. Exploiting genetic variability to...
Antianxiety Activity of Methanol Extract of Gelsemium sempervirens (Linn.) Ait.
Background: Despite significant advances in understanding and management of neuropsychiatric disorders during past few decades, anxiety and depression, still remains the leading cause of deaths, primarily for want of eff...
Protective Effect of Ghrelin on Sodium Valproate-induced Liver Injury in Rat
Ghrelin is a peptide that has protective effects on many tissues injury. It has anti-inflammatory and anti-oxidant effects. Sodium valproate is widely used anticonvuisant and anti-depression drug with hepatotoxic side ef...
24-epibrassinolide enhances flower and fruit production of pepper (Capsicum annuum L.) under salt stress
Among various environmental stresses, salt stress is extensively damaging to crops production in many areas of the world. The enhancement of plant tolerance is important for plant productivity. Brassinosteroids plays an...