تفاصيل الوثيقة

نوع الوثيقة : مقال في مجلة دورية 
عنوان الوثيقة :
تأثير تلوث الهواء بالعناصر الثقيلة على العمليات الفسيولوجية والحيوية فى نبات الخس
Effects of Airborne Heavy Metal Pollution on Physiological and Biochemical Processes in Lettuce (Lactuca sativa L.Romaine) Plants
 
الموضوع : علوم البيئة 
لغة الوثيقة : الانجليزية 
المستخلص : 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. 
ردمد : 4741-4748 
اسم الدورية : Advances in Environmental Biology 
المجلد : 7 
العدد : 14 
سنة النشر : 1434 هـ
2013 م 
نوع المقالة : مقالة علمية 
تاريخ الاضافة على الموقع : Tuesday, March 18, 2014 

الباحثون

اسم الباحث (عربي)اسم الباحث (انجليزي)نوع الباحثالمرتبة العلميةالبريد الالكتروني
Ibrahim A. HassanHassan, Ibrahim A.باحث ihassan_eg@yahoo.com
Jalal M. BasahiBasahi, Jalal M.باحث  
Iqbal M. IsmailIsmail, Iqbal M.باحث  
Asharf A. ZahranZahran, Asharf A.باحث  

الملفات

اسم الملفالنوعالوصف
 36721.pdf pdfEffects of Airborne Heavy Metal Pollution on Physiological and Biochemical Processes in Lettuce (Lactuca sativa L.Romaine) Plants

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