Effect of silicon and silicon nanoparticles on lead-treated wheat seedlings in hydroponic condition
Paper Details
Effect of silicon and silicon nanoparticles on lead-treated wheat seedlings in hydroponic condition
Abstract
The current study was designed to elucidate the effect of silicon and silicon nanoparticles on lead-treated wheat seedlings in hydroponic condition. Pb treatments decreased the shoot length, leaf area, shoot fresh weight, shoot dry weight, roots fresh weight and roots dry weight of wheat seedlings. The photosynthetic pigments (chlorophyll “a”, chlorophyll “b”, carotenoids, and total chlorophyll) were also reduced in leaves of wheat seedlings due to Pb stress. On contrary, addition of Si with Pb and addition of SiNPs with Pb successfully overcome the Pb-induced toxicity. The data showed that Si and SiNPs treatments improved the lead-treated wheat seedlings growth and photosynthetic pigments. It is concluded that Pb causes negative effect on wheat seedlings, however; Si and SiNPs protect the wheat seedlings against Pb toxicity. Further, SiNPs are more effectual than Si to ameliorate the Pb toxicity because of its greater availability to seedlings.
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