تقييم السمية النباتية للألومنيوم على النبات الإماراتي "العشار" و استخدامه كمؤشر بيولوجي لرصد تلوث الألومنيوم في البيئة

الملخص EN

Pollutants containing heavy metals released from industries constitutes one of the major problems in urban environments.

aluminum (al) heavy metal is a dominant environmental pollutant that causes serious toxic effects to living organisms.

UAE is a world leader in aluminum manufacturing and its related construction industry.

hence, it is critical to monitor regularly the changes in al concentrations in the UAE natural resources.

living organisms could be used as bioindicators for monitoring the levels of heavy metals in environmental samples.

the aim of this study was to develop a simple bioindicator system for monitoring the al pollution through the root of the UAE native plant calotropis procera seedlings grown hydroponically, and assessing the al accumulation and the molecular toxicity as biomarkers of al pollution.

our results showed a significant decrease in C.

procera root length with the increase in the al concentrations.

electrical conductivity changes analysis showed that al induced damage to c.

procera root plasma membrane as indicated by electrolyte leakage increase.

moreover, x-ray fluorescence microscopy (XRF) analysis demonstrated the distribution of Al on C.

procera roots treated with Al as a result of Al uptake by C.

procera roots.

Randomly amplified polymorphic DNA (RAPD) PCR analysis confirmed the genotoxic effect of Al which induced C.

procera genomic DNA modification.altogether, our result demonstrated that C.

procera could be used as a bioindicator for direct monitoring of aluminum environmental pollution.