title: Mycoextraction of radiolabeled cesium and strontium by Pleurotus eryngii mycelia in the presence of alumina nanoparticles: Sorption and accumulation studies.
abstract: Widespread use of products based on nanomaterials results in the release of nanoparticles into the environment. Nanoparticles can be taken up by organisms, but they can also coexist with other substances such as radionuclides, thus affecting their uptake or toxicity. In contrast, the sorption capacity of nanoparticles is exploited in water purification. The aim of the study was to investigate: (i) bioaccumulation of cesium and strontium by Pleurotus eryngii mycelia in the presence of alumina nanoparticles (Al2O3NPs); and (ii) sorption of radionuclides on the surface of nanoparticles. For the experiments, living and dried mycelia were used to permit distinguishing between active uptake and passive sorption of the NPs by P. eryngii. The results are discussed from the perspective of the use of P. eryngii in the mycoextraction of radionuclides. The sorption capacity of Al2O3NPs and the accumulation by P. eryngii mycelia differ for the applied radioisotopes. The efficiency of Cs and Sr sorption by alumina nanoparticles is 20% and 40%, respectively. Mycelia of P. eryngii have the ability to accumulate 30% of both radioisotopes from the medium. More than 60% of strontium can be removed accumulated from water by P. eryngii mycelia in coexistence with Al2O3NPs, while the efficiency of cesium removal accumulation is negligible. It was found that alumina nanoparticles do not enhance uptake of radionuclides by P. eryngii mycelia; mycoextraction of radionuclides by mycelia and sorption by Al2O3NPs are concurrent processes. There was no difference between live or dried mycelia uptake.
authors: Isotope Laboratory, Faculty of Biology, University of Warsaw, Miecznikowa 1, 02-096, Warsaw, Poland. Electronic address: asztemborska@biol.uw.edu.pl.
authors: Monika
authors: M
authors: Asztemborska
authors: Isotope Laboratory, Faculty of Biology, University of Warsaw, Miecznikowa 1, 02-096, Warsaw, Poland. Electronic address: maljak@biol.uw.edu.pl.
authors: Małgorzata
authors: M
authors: Jakubiak
authors: Isotope Laboratory, Faculty of Biology, University of Warsaw, Miecznikowa 1, 02-096, Warsaw, Poland. Electronic address: mrykaczewska@onet.eu.
authors: Magdalena
authors: M
authors: Rykaczewska
authors: Isotope Laboratory, Faculty of Biology, University of Warsaw, Miecznikowa 1, 02-096, Warsaw, Poland. Electronic address: martin.bembenek@gmail.com.
authors: Marcin
authors: M
authors: Bembenek
authors: Isotope Laboratory, Faculty of Biology, University of Warsaw, Miecznikowa 1, 02-096, Warsaw, Poland. Electronic address: rost@biol.uw.edu.pl.
authors: Romuald
authors: R
authors: Stęborowski
authors: Isotope Laboratory, Faculty of Biology, University of Warsaw, Miecznikowa 1, 02-096, Warsaw, Poland. Electronic address: byst@biol.uw.edu.pl.
authors: Grażyna
authors: G
authors: Bystrzejewska-Piotrowska
mesh_terms: D000537:Aluminum Oxide; D002588:Cesium Radioisotopes / Q000378:metabolism*; D053758:Nanoparticles; D020076:Pleurotus / Q000378:metabolism*; D013326:Strontium Radioisotopes / Q000378:metabolism*
chemical_list: D002588:Cesium Radioisotopes; D013326:Strontium Radioisotopes; D000537:Aluminum Oxide
keywords: Cesium; Mycoextraction; Nanoparticles; Pleurotus eryngii; Radioisotopes; Strontium