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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 Type
Dr Grade
Email
Mohamed M Ibrahim
Ibrahim, Mohamed M
Researcher
Doctorate
m_ibramim2004@yahoo.com
سميره عمر بافيل
Bafeel, Sameera O
Researcher
Doctorate
sbafil@kau.edu.sa
Files
File Name
Type
Description
33039.pdf
pdf
Abstract
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