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    Wyświetlanie 1-4 z 4
    Tytuł:
    Discrimination between 137Cs and 40K in the fruiting body of wild edible mushrooms
    Autorzy:
    Bystrzejewska-Piotrowska, G.
    Urban, P.
    Stęborowski, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/148441.pdf
    Data publikacji:
    2003
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    137Cs/40K discrimination factor
    fruiting body
    mushrooms
    Opis:
    Samples of five species of wild edible mushrooms, growing in the vicinity of Warsaw, were analyzed in order to determine discrimination factors (DF) for 137Cs and 40K in their caps and stipes. The obtained DF values range from 0.80 to 2.87, and seem to be characteristic of each species. A brief discussion of the observed phenomenon is presented.
    Źródło:
    Nukleonika; 2003, 48, 3; 155-157
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A simple and quick model to study uptake and transfer of radionuclides and heavy metals from mycelium to the fruitbody of saprophytic edible fungi
    Autorzy:
    Manjón, J.
    Urban, P.
    Bystrzejewska-Piotrowska, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/147291.pdf
    Data publikacji:
    2004
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    bioaccumulation
    radionuclides
    heavy metals
    mushrooms
    mycoextraction
    Pleurotus eryngii
    saprophytic fungi
    Opis:
    A simple model of Pleurotus eryngii mushroom culture, grown under stringent laboratory conditions, was developed to watch ecophysiological pathways of xenobiotics in saprophytic fungi. The investigated substances may be added in different stages of biological cycle of the fungus. It is emphasized that to obtain the fruitbodies, all the physiological needs of the species have to be fulfilled, i.e.: nutritional requirements, optimal temperature (according to the biological cycle), humidity, aeration (oxygen and CO2), absence or presence of the light in each reproduction phase, as well as the control of infections and plagues through all the production stages. The described model serves for investigation of radionuclide and heavy metal uptake and transfer in fungi. Double or some multiple fructification from the same substrate is possible giving a possibility to investigate bioremediation by mycoextraction.
    Źródło:
    Nukleonika; 2004, 49,suppl.1; 21-24
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cationic interactions in caesium uptake by king oyster mushroom (Pleurotus eryngii )
    Autorzy:
    Bystrzejewska-Piotrowska, G.
    Manjón, J.
    Pianka, D.
    Bazała, M.
    Urban, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/147730.pdf
    Data publikacji:
    2005
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    bioaccumulation
    bioremediation
    caesium
    fungi
    mushrooms
    mycoextraction
    Pleurotus eryngii
    radionuclides
    Opis:
    In order to explain influence of common cations (K+, Na+ and Ca2+) on uptake and transport of caesium in macromycetes, a culture of a model mushroom species, king oyster mushroom (Pleurotus eryngii) was set up. Fructification in a growing chamber with stabilised temperature (18°C) and humidity (80%) was preceded by mycelial colonization of the sterilized barley seed medium packed into autoclavable plastic containers. Aliquots of test solutions, containing 0.1 mM caesium chloride carrier traced with 137CsCl and the selected ions, were dosed into the interphase between the container wall and the spawn block. This allowed to study influence of the added ions on the uptake of caesium in a way unaffected by the used growing medium, e.g. soil, as it was in the previous studies. The experiments demonstrated that the major amount of radiocaesium was biologically bound and accumulated in the fruitbodies to a higher extent (56 69%) than in the mycelium. Addition of 10 mM Na+ decreased the transfer factor for caesium (cap/soil) while addition of Ca2+ caused an increase of this value. The effect of potassium addition depended on its concentration in the solution. Also the Cs/K ratio in caps was significantly influenced by addition of 10 and 100 mM Na+. However, the Cs/K ratio in stipes was affected by Ca2+. Discrimination factors, calculated from specific activities (137Cs/40K cap d.w.)/(137Cs/40K stipe d.w.), were also changed after addition of the studied cations. Since the activities of caesium measured in the fruitbodies of single fungal species strongly depend on the content of co-supplied ions, further proofs should be achieved before using mushrooms as bioindicators of the soil caesium contamination.
    Źródło:
    Nukleonika; 2005, 50,suppl.1; 9-13
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Preliminary study of platinum accumulation in the fruitbodies of a model fungal species: king oyster mushroom (Pleurotus eryngii)
    Autorzy:
    Urban, P.
    Bazała, M.
    Asztemborska, M.
    Manjón, J.
    Kowalska, J.
    Bystrzejewska-Piotrowska, G.
    Pianka, D.
    Stęborowski, R.
    Kuthan, R. T.
    Powiązania:
    https://bibliotekanauki.pl/articles/147784.pdf
    Data publikacji:
    2005
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    bioaccumulation
    bioremediation
    fungi
    heavy metals
    mushrooms
    mycoextraction
    platinum
    Opis:
    A model species of saprophytic fungus, king oyster mushroom (Pleurotus eryngii), was cultivated on barley substrate supplied with [Pt(NH3)4](NO3)2, under well defined conditions. The samples of the collected fruiting bodies were digested and analyzed for total platinum content by means of ICP-MS. The results proved that platinum is not accumulated in the fruitbodies of Pleurotus eryngii for a wide range of Pt concentrations in the culture substrate (100 1000 ppb Pt in 50 ml of water solution added to ca. 450 g of hydrated barley seeds per container). Observable levels of Pt were only found in the fruitbodies obtained from the medium contaminated with 10000 ppb (10 ppm) platinum solution. This demonstrates significant difference in the effectiveness of platinum extraction in fungi and plants, which are capable to accumulate platinum even when supplied at lower concentration (<500 ppb). It also shows different physiological pathways of platinum and other elements which are easily accumulated in the fruitbodies of the same species.
    Źródło:
    Nukleonika; 2005, 50,suppl.1; 63-67
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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