Wydanie 338(44)4 2017

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https://oa.zut.edu.pl/handle/20.500.12539/701

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Przeglądaj Wydanie 338(44)4 2017 wg Temat "biodegradacja"

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    The growth of soil fungi Penicillium in the presence of N-(2-pyridylamino) methylenebisphosphonate as an alternative source of nutrients
    (Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2017) Krzyśko-Łupicka, Teresa; Kręcidło, Łukasz; Kręcidło, Magdalena; Independent Department of Biotechnology and Molecular Biology, University of Opole; Independent Department of Biotechnology and Molecular Biology, University of Opole; Independent Department of Biotechnology and Molecular Biology, University of Opole
    N-(2-pyridylamino)methylenobisphosphonic acid exhibits high herbicidal capability. In this we would like to examine its interaction with soil microorganisms. The aim of this study was to evaluate the ability of Penicillium strains to grow in the presence of 1 mM N-(2- -pyridylamino)methylenobisphosphonic acid as an alternative source of phosphorus, nitrogen or carbon. The pure fungal cultures have been grown in Czapek medium or modificated medium, at 25°C for 1–4 weeks. The growth of fungi in full mineral pH 5.6 and pH 4.0 media was considered as controls, whereas the growth of fungi in medium without nutriment (carbon, nitrogen, phosphorus, nitrogen and phosphorus) was an absolute control. In our studies we determined: the kinetics of mycelial growth, fungi morphology, degree of degradation of N-(2-pyridylamino)methylenobisphosphonic acid by spectrophotometric UV-VIS and changes of media pH. Tested fungi did not use a N-(2-pyridylamino)methylenobisphosphonic acid as an alternative source nutrition. In each of the modified growth medium, inhibition of mycelial growth was observed. However, no changes of the concentration of studied acid in medium was observed. Simultaneously, we noticed phenotypic changes of the fungi what indicate that the metabolic disturbances in the presence of acid.