Abstracto

Some Metabolic Activities of Calotropis procera Habitated under High Voltage-Power Lines

Fatima M. Z. Alaish, Hassan S. M. Al-Zahrani and Sherif S. Z. Hindi

The effect of electromagnetic field (EMF) induced by high voltage-power lines on some metabolic activities of Calotropis procera habitated under these circumstances was studied. Four towers installed at different years (1981, 1991, 2008 and 2013) were selected at North of Jeddah city for this study. The leaves samples were collected randomly from the shrubs habitated at three distances apart from each tower (0 m, 50 m and 100 m) beside the control plants.The metabolic parameters studied were total protein, amino acids,proline, chlorophylland total carbohydrates contents.Magnetic field intensity was found to be inversely related to the distances studied.With the increasing the sampling distance from tower, the magnetic field intensity was smoothly decreased. The tower’s construction date and distances apart from towers differed in both intensities of magnetic field and light. The highest magnetic field intensity was recorded just beneath the tower built at 2008, while the minimum value was found at 100 m apart from the towers build at 2008 and 2013. The intensity of EMF was found to be directly related to each of protein and amino acids contents and inversely related to carbohydrates content. Each of protein, amino acids and carbohydrates contents were higher for the EMF-stressed leaves comparing to the control ones and vice versa for the proline content