Effect of Silver Nanoparticles Synthesized by Fungi on the Growth of Phaseolus radiatus Seedlings

KOBASHIGAWA, JESICA; ROBLES, CAROLINA A.; SCAFFARDI, LUCIA; CARMARAN, C. C

Santa Fe

Conferencia; XXXIII Argentinian meeting of Plant Physiology; 2021

Sociedad argentina de Fisiologia vegetal

In recent years the use of nanomaterials has been increasing in different branches of technological and biotechnological applications due to their physicochemical qualities. In the last years the increasing use of silver nanoparticles are causing major exposure to the environment, being toxic against plants, animals and microorganisms and changing the microbial community of soil and water. In the recent years, a number of studies have been performed to understand the toxicological impacts and possible hazards of different nanoparticle exposures to human and the environment, but there is still a major gap in knowledge about the toxicity effects of nanoparticle exposures. Phaseolus radiatus L. is an important commercial crop belonging to the legume family and it is recommended as a testing species by the Organization for Economic Co-operation and Development (OECD) and the American Society for Testing Materials (ASTM). In this work, biologically synthesized silver nanoparticles using the fungi Tulasnella albida, Cerinosterus sp. and Penicillium sp. were employed to test the effect of these nanoparticles in P. radiatus seedling growth, based on the following indicators: stem length, root length, fresh weight, and dry weight. Water, the filtrate of each fungus and a solution of AgNO3 were used as controls. The results would indicate that the nanoparticles affect more negatively root and stem length rather than weight of the seedlings, having the major impact those nanoparticles produced by Penicillium sp. This work contributes to increase the knowledge about the possible impacts of nanoparticles that enter the environment on plant organisms.