Spirulina platensis alleviating effect to rocket plant (eruca vesicaria)‎ grown on a pb-polluted soil

الملخص EN

Lead (Pb) is a hazardous heavy metal causing environmental pollution in various sources.

A 3-factor pot experiment was conducted to asses the use of Spirulina platensis for alleviating Pb pollution on rocket plant (Eruca vesicaria ) grown in pots (10-kg pot^-1).

Factors and treatments were (1) Pollution (L): non-polluted (L₀) and polluted soil with 400 mg Pb kg^-1 (L₁) as PbCl₂ (2) Priming (P): none (P₀), priming (soaking) of rocket seeds in 40 mgL^-1(P₁) and 80 mgL^-1 (P₂) (3).

Spirulina foliar spray (F): with distilled water (F₀), 40 mg L^-1 (F₁) and 80 mgL^-1 (F₂).

Spirulina alleviated contamination andincreased growth and photosynthetic pigments and activity as well as increased activity of carboxylating enzymes (Phosphoenol pyruvate carboxylase (PEPC, EC 4.1.1.31) and ribulose1, 5-bisphosphate carboxylase (RuBPC, EC 4.1.1.39) and NPK Highest positive effect was by the the combination of foliar and soaking at 80mg/l of Spirulina platensis solution.