Document Details

Document Type : Article In Journal 
Document Title :
Effects of Airborne Heavy Metal Pollution on Physiological and Biochemical Processes in Lettuce (Lactuca sativa L.Romaine) Plants
تأثير تلوث الهواء بالعناصر الثقيلة على العمليات الفسيولوجية والحيوية فى نبات الخس
 
Subject : Enviromental sciences 
Document Language : English 
Abstract : Visual symptoms of phytotoxicity of heavy metals were observed on Lettuce (Lactuca sativa L. cv. Romaine) plants grown at industrial and urban areas, where the concentrations of metals was about 36 times higher than in other sites. Moreover, dramatic changes in enzymatic activities as well as net photosynthetic rates (A), variable to maximum chlorophyll fluorescence (Fv/Fm) and stomatal conductance (gs). The decrease in chlorophyll reached 70 and 64% in plants cultivated in the industrial and urban regions, while lengths of shoots reduced by 50 and 41% in plants collected from the same locations, respectively. Antioxidant enzymes were significantly altered during exposure. On the other hand, and lipid peroxidation was enhanced by exposure to airborne heavy metals. The reduction in chlorophyll and other physiological and biochemical parameters were correlated with the concentrations of airborne pollutants measured in the atmosphere of the locations examined. Moreover, lettuce plants cultivated in the industrial region accumulated heavy metals, which can pass into the human food chain. The biochemical and physiological parameters measured in the present study clearly showed that they could form the basis of a plant biomarkers battery for monitoring and predicting early effects of exposure to airborne heavy metals. 
ISSN : 4741-4748 
Journal Name : Advances in Environmental Biology 
Volume : 7 
Issue Number : 14 
Publishing Year : 1434 AH
2013 AD 
Article Type : Article 
Added Date : Tuesday, March 18, 2014 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
Ibrahim A. HassanHassan, Ibrahim A.Researcher ihassan_eg@yahoo.com
Jalal M. BasahiBasahi, Jalal M.Researcher  
Iqbal M. IsmailIsmail, Iqbal M.Researcher  
Asharf A. ZahranZahran, Asharf A.Researcher  

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