Document Details

Document Type : Article In Journal 
Document Title :
Molecular and physiological aspects for Lepidium sativum tolerance in response to lead toxicity
Molecular and physiological aspects for Lepidium sativum tolerance in response to lead toxicity
 
Subject : Biological 
Document Language : English 
Abstract : The present study was undertaken to evaluate the toxicity of Pb 2+ on photosynthetic pigments, total soluble protein and MDA contents as well as the activities of SOD, CAT and POD in Lepidium sativum leaves after 10-days of supplying lead (0-600 ppm) in the nutrient solution. The results indicated that lead treatment adversely affected plant growth and disturbed the cell metabolism critically. The development of toxic symptoms, corresponding to a high accumulation of Pb 2+, was a sum of the increase in H 2O 2 and MDA contents, decrease in protein content, and the much elevated SOD and POD activities in leaves. In addition, the results demonstrated that exposure to high lead concentration (Pb 2+ >400 ppm) could result in the disintegration of antioxidant system in Lepidium seedlings. Also the significant decrease in the contents of photosynthetic pigments was related to high-level metal stress. Higher concentrations of Pb 2+, especially 400 and 600 ppm, resulted in a great variation in protein pattern distribution, migration position and bands intensities. The outcome of this study corroborates that Lepidium sativum is a suitable hyper-accumulator candidate and tolerant against low-level lead contaminated soil. 
ISSN : 1018-4619 
Journal Name : Fresenius Environmental Bulletin 
Volume : 20 
Issue Number : 8 
Publishing Year : 1432 AH
2011 AD 
Article Type : Article 
Added Date : Saturday, April 28, 2012 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
Mohamed M IbrahimIbrahim, Mohamed MResearcherDoctoratem_ibramim2004@yahoo.com
سميره عمر بافيلBafeel, Sameera OResearcherDoctoratesbafil@kau.edu.sa

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