Fungicidal action of mycogenic silver nanoparticles against Aspergillus niger inciting collar rot disease in groundnut (Arachis hypogaea L.)

Authors

  • B. BHASKAR, S. KHAYUM AHAMMED, R. SARADA JAYALAKSHMI DEVI, K. MANJULA, V.A. RASHEED and T.N.V.K.V. PRASAD

Keywords:

Aspergillus niger, Antipathogenic activity, Collar rot, Groundnut rhizosphere, Silver nanoparticles, Trichoderma sp.

Abstract

In the present study, silver nanoparticles were synthesized using the fungus Trichoderma sp. which was collected from groundnut rhizosphere. The culture filtrate of Trichoderma sp. was used for the reduction of silver ions (Ag+) in AgNO3 solution to the silver (Ag0) nanoparticles. The different ages (4, 6, 8, 12 and 15 days) of culture filtrates were screened for the synthesis of silver nanoparticles. Synthesized silver nanoparticles were characterized using UV-Vis spectrophotometer, Particle size analyser and Transmission Electron Microscopy (TEM). Among the all treatments the silver nitrate solution treated with six days old culture filtrate showed the UV absorption peak at 440 nm with maximum intensity (0.59) after 24 hrs incubation. TEM micrographs showed the spherical shaped silver nanoparticles with an average size of 30 nm. The antifungal activity of silver nanoparticles against Aspergillus niger causing collar rot disease in groundnut showed the highest per cent inhibition at 100 ppm concentration (74.8%).

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Issue

Vol. 69 No. 4s (2016): Indian Phytopathology : Special Issue

Section

Research Articles

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How to Cite

R. SARADA JAYALAKSHMI DEVI, K. MANJULA, V.A. RASHEED and T.N.V.K.V. PRASAD, B. B. S. K. A. (2016). Fungicidal action of mycogenic silver nanoparticles against Aspergillus niger inciting collar rot disease in groundnut (Arachis hypogaea L.). Indian Phytopathology, 69(4s), 605-608. http://epubs.icar.org.in/ejournal/index.php/IPPJ/article/view/71404