Effect of multi-walled carbon nanotubes (MWCNTs) on counts of microorganisms in soil as exemplified by the cultivation of selected fodder grasses

Adam Radkowski , Iwona Radkowska , Jan Bocianowski , Agnieszka Galus-Barchan


The aim of this study was to evaluate the effect of two types of multi-walled CNTs: raw MWCNTs and carboxylated MWCNTs, on the microbiology of soil on which three species of fodder grasses were cultivated: timothy grass, common meadow grass and meadow fescue. A two-year pot experiment evaluated the effect of MWCNTs (at a dose of 15 g pot-1, i.e. 4.77 t ha-1) and carboxylated MWCNTs (at a dose of 80 g pot-1, i.e. 25.5 t ha-1) on the number of microorganisms in soil and in root matter. The total number of bacteria, number of dormant bacteria, actinomycetes and fungi were investigated. Considerable diversity in the counts of microorganisms was observed, depending on a grass species, type of fraction and type of nanotubes added. When analyzing the total results from the three fractions (the rhizosphere, outside the rhizosphere and roots), the highest number of most of the microorganisms studied was determined in samples from control treatments. The lowest values were obtained in samples from treatments with the addition of carboxylated MWCNTs, and intermediate values were achieved from treatments with raw MWCNTs. The total number of bacteria was positively correlated with the number of dormant bacteria, actinomycetes and fungi. The number of dormant bacteria correlated with the growth of actinomycetes and fungi. Soil contamination even with relatively high amounts of MWCNTs or carboxylated MWCNTs does not cause massive mortality of soil microorganisms. That is why it is important to assess their potential effect on the environment.
Author Adam Radkowski (FoAE / IoPP)
Adam Radkowski,,
- Institute of Plant Production
, Iwona Radkowska
Iwona Radkowska,,
, Jan Bocianowski
Jan Bocianowski,,
, Agnieszka Galus-Barchan (FoAE / DoM)
Agnieszka Galus-Barchan,,
- Department of Microbiology
Journal seriesJournal of Elementology, ISSN 1644-2296, (N/A 40 pkt)
Issue year2019
Publication size in sheets0.6
Keywords in EnglishPhleum pratense, Poa pratensis, Festuca pratensis, MWCNTs, soil microorganisms
ASJC Classification1604 Inorganic Chemistry; 2303 Ecology; 2307 Health, Toxicology and Mutagenesis; 2310 Pollution
URL http://jsite.uwm.edu.pl/index/getfile/1588
Internal identifierWRE/2019/7
Languageen angielski
LicenseJournal (articles only); author's original; Uznanie Autorstwa - Użycie Niekomercyjne - Na tych samych warunkach (CC-BY-NC-SA); after publication
Score (nominal)40
Score sourcejournalList
Publication indicators WoS Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2018 = 0.638; WoS Impact Factor: 2018 = 0.733 (2) - 2018=0.785 (5)
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FinansowanieThis Research was financed by the Ministry of Science and Higher Education of the Republic of Poland
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