دراسة أثر بعض مركبات الايض الخلوي في تقليل الأثر الضار لعناصر الرصاص الحديد النحاس و الزنك المتراكمة حيويا في حصول نباتي اليوكالبتوس و الدفلة على المغذيات

الملخص EN

The research work was investigated to determine some primary metabolic products (proteins and carbohydrates) and secondary (phenols) to decrease the effects of some heavy metals (iron, lead, copper and zinc) bioconcentration factor (BCF) in uptake of total nitrogen (TN), total phosphors (TP) and total potassium (TK) in shoots of Eucalyptus camaldulensis (Red River Gum) and Nerium oleander (Oleander) cultivated in Kirkuk city roads.

Plants and soil samples were collected from eight localities seasonally from March 2018 to February 2019.

Lead, iron and copper accumulated in N.

oleander shoots(average concentrations lead 0.35 ppm, iron 0.802 ppm and copper 0.12ppm) respectively more than E.

camaldulensis shoots (average concentrations lead 0.3 ppm, iron 0.646 ppm and copper 0.091 ppm), while zinc accumulated rate in E.

camaldulensis shoots 0.226ppm respectively equal N.

oleander shoots 0.221ppm.

The uptake of TP negatively affected in E.

camaldulensis and N.

oleander samples but TN and TK did not because its recorded average values in plants samples (TN in E.

camaldulensis 1.599 ppm and N.

oleander 1.82 ppm; TK in E.

camaldulensis 63.468 ppm and N.

oleander 62.787 ppm) higher than recorded in soil samples (TN 0.577 ppm and TK 47.16 ppm).

N.

oleander samples were more efficiency by accumulate higher rate of heavy metals without effects in nutrients uptake compare to E.

camaldulensis samples were removed bio concentrated heavy metals and nutrients.

The total proteins rate and phenols compounds recognized in E.

camaldulensis samples (Chlorogenic acid, Catechin, P-coumaric acid, Benzoic acid, Cinnamic acid, Genistic acid, Kaempferol and Quercetin) and in N.

oleander samples (Chlorogenic acid, Catechin, P-coumaric acid, Benzoic acid, Cinnamic acid, Genistic acid, Kaempferol, Quercetin, Rutin, Ferulic acid and Epigallocatchein) escape active defensive lines for plants samples to uptake nutrients without negative affected by concentrated heavy metals.