Identyfikatory
DOI
Warianty tytułu
Ocena wpływu MCPA na fitotoksyczność gleby oraz obecność genów biorących udział w procesach jego biodegradacji
Języki publikacji
Abstrakty
The aim of this study was to evaluate the changes in ecotoxicity of agricultural soil under the influence of Agritox 500SL, an herbicide from the phenoxyacid group, containing MCPA (2-methyl-4-chlorophenoxyacetic acid), applied every 3 weeks for 3 months. Biodegradation potential in control and weathered soil was confirmed by the analysis of the functional gene tfdA using PCR technique. Properties of the soil were assessed by the analysis of granulometric composition, pH, the content of macroelements and heavy metals. The soil ecotoxicity was measured using biotests Phytotoxkit® and Microtox®. The content of Ni (70 mg/kg) and Cr (21 mg/kg) was especially high in the soil with Agritox 500SL. The highest toxic effect for test organisms was observed in freshly spiked soil: 99% L. sativum, 97% S. alba, 66% S. saccharatum (% root growth inhibition) and 76% V. fischeri (% luminescence inhibition). Weathering processes signifi cantly decreased the soil ecotoxicity being 36%, 34% and 3% for V. fischerii, S. alba and L. sativum, respectively. S. saccharatum showed 12% stimulation of the root length. Molecular analysis confirmed the potential of indigenous soil bacteria to biodegrade MCPA by the presence of tfdAα and tfdA Class III genes in the studied soil. The obtained results proved that either MCPA and residues of its decomposition or additional supporting substances in Agritox 500 SL, can influence enhanced soil ecototoxicity. The presence of functional tfdA genes in both: control and weathered soil, confirmed the high potential of indigenous soil bacteria to degrade MCPA.
Celem przeprowadzonych badań była ocena zmian ekotoksyczności gleby rolniczej zanieczyszczonej środkiem ochrony roślin Agritox 500SL, zawierającym herbicyd z grupy fenoksykwasów MCPA (kwas 2-metylo-4-chlorofenoksyoctowy). Herbicyd był dodawano do gleby co 3 tygodnie przez okres 3 miesięcy. Potencjał biodegradacyjny gleby niezanieczyszczonej oraz gleby z dodatkiem MCPA, sprawdzono badając obecność genów funkcyjnych tfdA z wykorzystaniem techniki PCR. Dodatkowo zbadano właściwości gleby takie jak: skład granulometryczny, pH oraz zawartość makroelementów i metali ciężkich. Ekotoksyczność gleby oznaczono przy użyciu testów toksyczności Phytotoxkit® i Microtox®. Stężenie Ni (70 mg/kg) i Cr (21 mg/kg) było szczególnie wysokie w glebie z dodatkiem MCPA. Najwyższą ekotoksyczność zaobserwowano w glebie świeżo zanieczyszczonej herbicydem, gdzie wynosiła ona: 99% dla L. sativum, 97% dla S. alba, 66% dla S. saccharatum (% inhibicja wzrostu korzeni) i 76% dla V. fi scheri (% inhibicja luminescencji). Zachodzące w czasie inkubacji przemiany herbicydu przyczyniły się do zmniejszenia ekotoksyczności gleby do 36%, 34% i 3% odpowiednio dla V. fischerii, S. alba i L. sativum; natomiast w przypadku S. saccharatum zaobserwowano 12% stymulację wzrostu korzeni. Analizy molekularne tj. detekcja fragmentów genów tfdAα i tfdA klasy III, potwierdziły potencjał bakterii obecnych w glebie rolniczej do degradacji MCPA. Uzyskane wyniki potwierdzają że MCPA oraz produkty jego dekompozycji jak również substancje dodawane do komercyjnych środków ochrony roślin mogą przyczynić się do wzrostu ekotoksyczności gleby. Obecność genów funkcyjnych tfdA zarówno w glebie niezanieczyszczonej jak i zanieczyszczonej herbicydem, wskazuje na potencjał degradacyjny bakterii glebowych pod kątem usuwania z gleby herbicydów z grupy fenoksykwasów takich jak MCPA.
Czasopismo
Rocznik
Tom
Strony
58--64
Opis fizyczny
Bibliogr.31 poz., rys., tab., wykr.
Twórcy
autor
- University of Lodz, Poland, Faculty of Biology and Environmental Protection, Department of Applied Ecology
autor
- University of Agriculture in Krakow, Poland, Faculty of Agriculture and Economics, Department of Agricultural and Environmental Chemistry
autor
- University of Lodz, Poland, Faculty of Biology and Environmental Protection, Department of Applied Ecology
- European Regional Centre for Ecohydrology, Polish Academy of Sciences, Poland
Bibliografia
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- 2. Bælum, J., Jacobsen, C.S. & Holben, W.E. (2010). Comparison of 16S rRNA gene phylogeny and functional tfdA gene distribution in thirty-one different 2, 4-dichlorophenoxyacetic acid and 4-chloro-2-methylphenoxyacetic acid degraders, Systematic and Applied Microbiology, 33(2), pp. 67-70.
- 3. Baran, A. & Tarnawski, M. (2013). Phytotoxkit/Phytotestkit and Microtox?? as tools for toxicity assessment of sediments, Ecotoxicology and Environmental Safety, 98, pp. 19-27.
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- 5. Celis, E., Elefsiniotis, P. & Singhal, N. (2008). Biodegradation of agricultural herbicides in sequencing batch reactors under aerobic or anaerobic conditions, Water Research, 42(12), pp. 3218-3224.
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- 8. Greert, L.E., & Shelton, D.R. (1992). Effect of inoculant strain and organic matter content on kinetics of 2 , 4-Dichlorophenoxyacetic acid degradation in soil, Applied and Environmental Micobiology, 58(5), pp. 1459-1465.
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- 12. Kobyłecka, J., Turek, A. & Sieroń, L. (2009). Phenoxyalkanoic acid complexes, Thermochimica Acta, 482(1-2), pp. 49-56.
- 13. López-Piñeiro, A., Peña, D., Albarrán, A., Sánchez-Llerena, J. & Becerra, D. (2013). Behavior of MCPA in four intensive cropping soils amended with fresh, composted, and aged olive mill waste, Journal of Contaminant Hydrology, 152, pp. 137-146.
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- 22. Siebielec, G., Chabros, B., Smreczak, Agnieszka Klimkowicz-Pawlas, Monika Kowalik, R., Kaczyński, P., Koza, A., Ukalska-Jaruga, Magdalena Łysiak, U. & Poręba, E. (2017). Raport z III etapu realizacji zamówienia "Monitoring chemizmu gleb ornych w Polsce w latach 2015-2017”.
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- 25. Smith, A.E., Mortensen, K., Aubin, A.J. & Molloy, M.M. (1994). Degradation of MCPA, 2,4-D, and other phenoxyalkanoic acid herbicides using an isolated soil bacterium, Journal of Agricultural and Food Chemistry, 42(2), pp. 401-405.
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- 30. Urbaniak, M., Zieliński, M. & Wyrwicka, A. (2017). The influence of the Cucurbitaceae on mitigating the phytotoxicity and PCDD/ PCDF content of soil amended with sewage sludge, International Journal of Phytoremediation, 19(3), pp. 207-213.
- 31. Xia, Z.Y., Zhang, L., Zhao, Y., Yan, X., Li, S.P., Gu, T. & Jiang, J.D. (2017). Biodegradation of the herbicide 2,4-Dichlorophenoxyacetic acid by a new isolated strain of achromobacter sp. LZ35, Current Microbiology, 74(2), pp. 193-202.
Uwagi
Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-0b68c694-aa75-47aa-a6fc-41aeaa7b8730