Green synthesis of zinc oxide nanoparticles using aqueous root extract of Sphagneticola trilobata Lin and investigate its role in toxic metal removal, sowing germination and fostering of plant growth

Abstract

Green synthesis of the Zinc oxide nanoparticles using aqueous root extract of Sphagneticola trilobata Lin is carried out for examining their effect on chromium reduction activity, germination, and growth promotion of fenugreek seeds. The synthesized nanoparticles were characterized using FT IR, X-ray Diffraction, SEM and EDX studies and confirm that the nanoparticles were irregular and complex structure and 41.4% Zinc was observed in the synthesized particles.The % Chromium metal reduction of 81.17%, 55.83%, 53.33% and 38.17% was observed at nanoparticle dosage of 1, 0.5, 0.25 and 0.10 g/L respectively. The fenugreek seed germination, growth effect and zinc accumulation in the roots were studied. Zn content in the root tissue was increased significantly with the synthesized nanoparticles than zinc sulfate. Compared with control and zinc sulfate the maximum seed germination, root and plant growth was observed with the treatment of zinc nanoparticles.

Keywords:

• Zinc oxide nanoparticles
• chromium metal removal
• fenugreek seed germination
• plant growth promotion