JBNB  Vol.6 No.3 , July 2015
Fluorescence Emission Spectrum of Elodea Leaves Exposed to Nanoparticles
Abstract: The intensive use of engineered nanoparticles (NPs) in industrial, agricultural and household applications will very likely lead to the release of such materials into the environment, especially water ecosystems. Water plants are an integral part of ecosystems; hence their interaction with NPs is inevitable. It is important to understand the consequences of this interaction and assess its potential effects. There are different types of approaches for investigating the toxic effects of NPs on plants. Chlorophyll fluorescence (ChlF) is one of interesting biophysical methods for testing the effects NPs on plants in vivo. ChlF is a suitable technique and a very powerful tool for the in vivo studying of photochemical and non-photochemical processes within thylakoid membranes, chloroplasts, plant tissues, and whole plants. The present work reports the in vivo observation of chlorophyll a fluorescence quenching induced by the iron (Fe3O4, Fe2O3) and aluminum oxide (Al2O3) nanoparticles. Excitation and emission spectra of intact leaves of Elodea were acquired by fluorescence spectrophotometer (Cary Eclipse) at room temperature. It was shown that the intensity of the ChlF decreased in the solution of Fe3O4 and Al2O3 nanoparticles on the light. Fe2O3 affected slightly and the toxicity of nanoparticles depended on dose and exposure period. It was clear from these experiments that the given nanoparticles penetrated into the cell and might decrease the chlorophyll content of leaves.
Cite this paper: Maharramov, A. , Ahmadov, I. , Ramazanov, M. , Aliyeva, S. and Ramazanli, V. (2015) Fluorescence Emission Spectrum of Elodea Leaves Exposed to Nanoparticles. Journal of Biomaterials and Nanobiotechnology, 6, 135-143. doi: 10.4236/jbnb.2015.63013.

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