Biodiagnostics of the Azov Seasolonchaks Condition Atchemical Contamination

Колесников, С. И.; Vernigorova, Natalya Aleksandrovna; Казеев, К. Ш.; Tishchenko, Svetlana A.; Dadenko, E. V.; Akimenko, Yuliya Viktorovna

doi:10.13005/ojc/320621

Cited by 3 publications

(3 citation statements)

References 9 publications

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“…A similar pattern was obtained in the studies carried out using the same method with other soils in the south of Russia: ordinary chernozem, leached, typical, compacted, mountain (Kolesnikov et al, 2014), chestnut, brown semidesert, solonets, sandy (Kolesnikov et al, 2011), brown (Kolesnikov et al, 2016a), brown forest (Kolesnikov et al, 2016b), solonchaks (Kolesnikov et al, 2016c) etc.…”

Section: Resultssupporting

confidence: 83%

Standardization of Heavy Metals and Oil Content by Biological Indicators in the Southern Chernozems of the Taman

Колесников¹,

Vernigorova²,

Kuzina³

et al. 2017

JEBAS

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This paper provides an assessment of the resistance of Taman chernozems to contamination with heavy metals (Cr, Cu, Ni, Pb) and oil by biological parameters. As a rule, upon contamination of the Taman chernozems, a significant reduction was observed in the total bacterial count, activity of catalase and dehydrogenase, cellulolytic activity, abundance of the Azotobacter genus bacteria and in the radish germination intensity. The extent of the deterioration in biological properties was determined by two factors: the chemical nature of the metal and its amount in the soil. As a rule, a direct relationship was observed between the concentration of the pollutant and the degree of deterioration of the soil properties in this study. The metals studied had shown different ecotoxicity with respect to the chernozems of Taman: Cr > Cu ≥ Ni = Pb Regional norms for the maximum allowable content of Cr, Cu, Ni, Pb, and oil in the Taman southern chernozems based on a disturbance of the ecological functions of soils were proposed.

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Section: Resultssupporting

confidence: 83%

Standardization of Heavy Metals and Oil Content by Biological Indicators in the Southern Chernozems of the Taman

Колесников¹,

Vernigorova²,

Kuzina³

et al. 2017

JEBAS

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“…T oday, the changes in the microbial community of various types of Russian soils on pollution by heavy metals, oil and oil products, [1][2][3] pesticides, [4] and electromagnetic effects of various nature [5,6] are quite well studied. Unlike pesticides that have long been used in agriculture, antibiotics have not aroused interest as potential environmental pollutants.…”

Section: Introductionmentioning

confidence: 99%

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Akimenko¹

2017

AJP

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Objective: The study is aimed at assessing resistance of the microbial community in soils (on the example of typical chernozem) to contamination with antibiotics of various chemical nature and spectra of activity (benzylpenicillin, ampicillin, streptomycin, oxytetracycline, tylosin, farmasinum, tromexin, aliseryl, nystatin, and input). Methods: The comprehensive study of microbiocenosis in soil included determination of the total number of bacteria by the method of fluorescent microscopy with staining of the samples with acridine orange, determination of the abundance of viable microorganisms of various ecological trophic groups with the use of the methods of sowing on solid nutrient substrate. Reaction of the substrate (pH) was determined by the potentiometric method in soil suspension 1:2.5. Results: The research has shown that chernozem contamination with antibiotics reduces the total number of bacteria, decreasing the number of individual ecological trophic groups of microorganisms, and changes their ratio. Contamination with antibiotics results in significant reduction in the number of ammonifying bacteria, which are represented most widely of the various ecological trophic groups of soil microorganisms. Most studied microbiological parameters get reduced when the concentration of antibiotics reaches 100 mg/kg of soil. The maximum influence of antibiotics is noticed within the first 10 days from the moment of contamination. The degree of antibiotics influence is determined by their nature, concentration, and time of exposure. Antibacterial antibiotics have a more inhibitory action on the microbial community, compared to the fungicidal ones. The effect of antibiotics on soil microbial coenosis has prolonged nature. Conclusions: By the degree of soil inhibition with microorganisms, antibiotics form the following line: Ampicillin > benzylpenicillin ≥ streptomycin > tylosin ≥ farmasinum > nystatin > tromexin > aliseryl. The degree of resistance to antibiotics, the studied microorganisms of chernozem formed the following line: Bacteria g. Azotobacter > micromycetes > amylolytic bacteria > ammonifying bacteria. The number of ammonifying bacteria is the most informative microbiological indicator of contamination with antibiotics. The indicator of g. Azotobacter bacteria abundance is uninformative in case of contamination with antibiotics.

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“…Currently, variation of biological properties of Russian southern soils is studied in details with regard to contamination with oil and gasoline, heavy metals, metalloids, [1][2][3][4][5] and pesticides. [6] However, contrary to pesticides, which have been used in agriculture for years, antibiotics did not attract attention as potential environmental contaminants.…”

mentioning

confidence: 99%

Untitled

Akimenko¹

2017

AJP

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Objective: Wide-scale application of numerous antibiotics with various chemical compositions and spectra in medicine, agriculture, and food industry is accompanied by violation of microbial community in various ecosystems. Therefore, the resistance of microbial community of soils to contamination with antibiotics widely applied in medicine and agriculture (tylosin and oxytetracycline) has been assessed. Antibiotic contamination leads to decrease in the count of main ecotrophic groups of microorganisms, variation of their ratio, and structure of microbial community in total. Materials and Methods: Maximum impact of antibiotics was exposed in the 1 st day after contamination of chernozem (3 days). Later (30 and 90 days), the trend of recovery of biological performances was observed, and dynamics of recovery of both microorganisms and enzyme activity was nonlinear. Results: In terms of resistance to antibiotics, the considered microorganisms could be ranged as follows: Micromycetes >p. Azotobacter bacteria > amylolytic bacteria > ammonifiers. Comparison of laboratory and field simulation of antibiotic contamination of chernozem revealed that the rate of deterioration of biological performances was more pronounced under laboratory conditions in comparison with the field. Conclusion: The recovery rate of chernozem biological activity after field contamination was higher more than by 2 times. Probably, this could be attributed to the fact that in the field environment antibiotics were decomposed more rapidly under climatic impacts.

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Biodiagnostics of the Azov Seasolonchaks Condition Atchemical Contamination

Cited by 3 publications

References 9 publications

Standardization of Heavy Metals and Oil Content by Biological Indicators in the Southern Chernozems of the Taman

Standardization of Heavy Metals and Oil Content by Biological Indicators in the Southern Chernozems of the Taman

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