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1

The role of bacteria growing on the root system of the common reed [Phragmites australis [Cav.] Trin. ex Steudel] in the metabolism of organic compounds

100%
Lalke-Porczyk E., Donderski W.
Polish Journal of Environmental Studies
|
2005
|
tom 14
|
nr 1
Some physiological properties and a number of heterotrophic bacteria inhabiting the surface of the root system of the common reed (Phragmites australis [Cav.] Trin. ex Steudel) were studied in two different types of bottom sediments (sandy and silty), and the bacteria were identified. For comparative purposes, samples of the bottom sediments from the sites where the reed grew were subjected to microbiological tests. It was found that the number of bacteria growing on the root system of the common reed and those inhabiting the types of bottom sediments tested increased from spring to summer and then decreased in autumn. On the surface of the rhizomes of the reed growing in silty sediments, a higher number of bacteria was always noted than on the surface of rhizomes growing in sandy sediments. Also, the number of heterotrophic bacteria in samples of bottom sediments was always higher in silty sediments than in sandy sediments. Lipo-, proteo- and amylolytic bacteria and bacteria capable of producing ammonia from organic compounds were dominant among all the isolated strains. The lowest numbers were found of chitinolytic bacteria and those that form hydrogen sulphide from organic compounds. Strains isolated in spring - both from the root system of the plant and from the samples of sediments - were potentially the most active physiologically. As a result of the identification of the isolated bacterial strains, it was found that bacteria from the Arthrobacter-Corynebacterium group and the Achromobacter genus are dominant in the root system of the common reed and in sandy and silty sediments.
2

Distribution of epiphytic bacteria on the surface of selected species of helophytes and nimpheides from the littoral zone of the Southern part of Jeziorak Lake in Poland

100%
Lalke-Porczyk E., Donderski W.
Polish Journal of Environmental Studies
|
2003
|
tom 12
|
nr 1
Research was carried out on the total number of bacteria and the number of heterotrophic epiphytic bacteria occurring on the surface of four selected species of freshwater macrophytes predominant in the littoral zone of the southern part of Lake Jeziorak. The highest numbers of bacteria inhabiting the studied plants were found on the surface of the stems of lesser reedmace, and the lowest numbers on the surface of leaves of floating pond-weed. It was shown that the number of epiphytic bacteria depends on the species of plant, which fragment of it, and the season in which the research is conducted. The results obtained are illustrated with photographs taken under a scanning electron microscope.
3

Metabolic activity of epiphytic bacteria inhabiting the common reed [Phragmites australis [Cav.] Trin. ex Steudel] in Moty Bay of Jeziorak Lake

100%
Lalke-Porczyk E., Donderski W.
Polish Journal of Environmental Studies
|
2001
|
tom 10
|
nr 6
This paper reports results of speciation analysis of selected heavy metals (Fe, Mn, Zn, Ni, Cu, Pb, Cd) in bottom sediment samples collected from 11 lakes in the area of Wielkopolski National Park, which is a protected area subjected to limited anthropogenic factors, The main aim of the study was determination of the distribution of the metals among five speciaiton forms defined by Tessier: exchangeable, bound to carbonates, bound to hydrated oxides of iron and manganese, bound to organic matter and others. The particular forms were isolated by sequential extraction..
4

The importance of the sand-reed filter in the domestic sewage treatment

81%
Lalke-Porczyk E., Swiontek Brzezinska M., Donderski W.
Polish Journal of Natural Sciences
|
2008
|
tom 23
|
nr 1
152-163
Research was carried out on the number of the heterotrophic bacteria capable of growth in the temperatures of 22°C (TVC 22°C) and 37°C (TVC 37°C) and the bacteria indicating the sanitary and bacteriological state: coliform bacteria (TC), fecal coliform bacteria (FC) and fecal streptococci (FS) in the process of domestic sewage cleaning on a reed overgrown plot in the communal sewage treatment plant at Wielka Nieszawka. It was ascertained that there followed a high reduction in the number of the bacteria from the investigated groups during the flow of the sewage through the sand-reed filter (by 60.6% to 89.3% on average), except for the fecal streptococci whose number decreased by 10.5% on average in the investigated period. Besides, it was demonstrated that the rhizomes of the common reed had made a convenient habitat for the development of the indicatory bacteria.
5

Degradation of chitin in natural environment: role of actinomycetes

81%
Swiontek B. M., Lalke-Porczyk E., Donderski W., Walczak M.
Polish Journal of Ecology
|
2009
|
tom 57
|
nr 2
229-238
The actinomycetes in water samples and bottom sediments of lowland, eutrophic lake as well as in soil (farmland, sandy) of the lake basin were studied. Chitin-degrading actinomycetes were isolated (with a plate technique) from each habitat; subsequently, their chitinolytic activity (with the fluorometric method) was determined in relation to temperature (10–50°C) and the physical type of chitinous substance (colloidal chitin, chitin powder, and shrimp shells). This study demonstrated that actinomycetes were the most abundant in soil samples (average of 18 × 10³ CFU g⁻¹ in farmland soil, 9 × 10³ CFU g⁻¹ in sandy soil), and the least abundant in water samples (average of 2.7 × 10¹ CFU mL⁻¹ in lake water at neutral pH, 0.6 × 10¹ CFU mL⁻¹ in lake water with alkaline pH). The highest percentage of chitinolytic actinomycetes was observed in soil (average of 80% in sandy soil and 85% in farmland soil). Chitinolytic actinomycetes also made up a large fraction of total actinomycetes in water samples (average of 73%). In silt and sandy sediments, percentages of chitinolytic actinomycetes equaled 23 and 15%, respectively. Actinomycetes collected in soil were characterized by the highest activity (average of 14 nmol MUF mg⁻¹ of protein h⁻¹ in farmland soil, 8.5 nmol MUF mg⁻¹ protein h⁻¹ in sandy soil). The lowest activity was observed among benthic actinomycetes (average of 5.4 nmol MUF mg⁻¹ of protein h⁻¹ in silt, 0.65 nmol MUF mg⁻¹ protein h⁻¹ in sandy sediments). The impact of temperature and the type of chitinous substrate on the activity of chitinases produced by actinomycetes demonstrated that their activity peaked at 40°C and in the presence of colloidal chitin. Observed differences in actinomycetales number and activity in the lake and the soil may be explained by higher accumulation of chitin substances in the soil. This polymer allows microorganisms to continually synthesize chitinolytic enzymes and take active part in that compound decomposition.
6

The role of chitinolytic bacteria and fungi in biodegradation of crustacean remains in lacustrine habitats

81%
Swiontek B. M., Lalke-Porczyk E., Donderski W.
Polish Journal of Ecology
|
2008
|
tom 56
|
nr 2
335-342
This study presents results of research on occurrence of chitinolytic bacteria and fungi in water, bottom sediments, and watershed soil of an eutrophic lake and on their ability to use the crustacean skeletons (shrimp waste) as a respiration substrate. It was found that the respiration rate of bacteria and fungi during decomposition of chitin varied in different environments. The participation of chitinolytic microorganisms in water (13%) and soil (18%) was greater than in bottom sediments (5%). The respiration activity in the presence of all parts of shrimp waste and shrimp exoskeletons observed in chitinolytic bacteria was higher than that of fungi. But fungi demonstrated the highest metabolic activity in the presence of the shrimp head sections. The highest respiration activity was observed in planktonic and soil bacteria, while the lowest, in benthic strains. The chitinolytic bacteria used well all examined respiration substrates (all parts of shrimp waste – 671 mg O₂ r⁻¹ protein in 5 days, the shrimp head sections – 851 mg O₂ r⁻¹ protein in 5 days and shrimp exoskeletons – 490 mg O₂ r⁻¹ protein in 5 days). No significant differences in respiration activity were observed in chitinolytic fungi isolated from water, bottom sediments and soil. All of fungal strains demonstrated the highest metabolic activity in the presence of the shrimp head sections (average 1083 mg O₂ r⁻¹ protein in 5 days). Shrimp exoskeletons were oxidized the least efficiently (average 160 mg O₂ r⁻¹ protein in 5 days). Certain strains were not using them at all.
7

Rola oczyszczalni hydrobotanicznych w oczyszczaniu sciekow z terenow wiejskich

81%
Lalke-Porczyk E., Swiontek-Brzezinska M., Donderski W.
Woda - Środowisko - Obszary Wiejskie
|
2010
|
tom 10
|
nr 3[31]
119-127
8

Utilization of shrimp waste as a respiration substrate by planktonic and benthic microorganisms

81%
Swiontek B. M., Lalke-Porczyk E., Donderski W.
Polish Journal of Environmental Studies
|
2008
|
tom 17
|
nr 2
273-282
This study presents results of research on the number of heterotrophic bacteria and fungi in water and bottom sediments of Lake Chełmżyńskie and their role in the decomposition of chitin. The authors also examined the level of respiration activity of water and sediment microorganisms in the presence of shrimp waste. Results demonstrate that the number of heterotrophic bacteria and fungi in water and bottom sediments were variable. The analyzed groups of microorganisms predominated in bottom sediments with the number of heterotrophic bacteria significantly exceeding that of fungi. The proportion of microorganisms capable of decomposing chitin was greater among fungi than among heterotrophic bacteria. In water chitinolytic bacteria constituted 11–19% of the total number of heterotrophic bacteria and in bottom sediments only 3–8%. Chitinolytic fungi constituted 17–67% and dominated in water. In the presence of shrimp waste, the level of respiration activity of microorganisms in water and bottom sediments of Lake Chełmżyńskie clearly depended on examined factors. The temperature, incubation time, and type of respiration substrate had a statistically significant impact on this activity. The highest respiration activity (2.4–90.3 mg O₂ · dm⁻³) of aquatic microorganisms was recorded in the summer, when the water temperature equaled 24°C. In bottom sediments the highest values of respiration activity also were observed in summer (13.4–447.4 mg O₂ g⁻¹ dry mass) but alkaline sediments were characterized by higher activity levels. Benthic and planktonic microorganisms were utilizing shrimp heads most effectively and the exoskeletons least effectively.
9

Utilization of shrimp-shell waste as a substrate for the activity of chitinases produced by microorganisms

81%
Swiontek B. M., Walczak M., Lalke-Porczyk E., Donderski W.
Polish Journal of Environmental Studies
|
2010
|
tom 19
|
nr 1
177-182
Chitinolytic microorganisms such as bacteria, fungi, and actinomycetes, were isolated from the water and bottom sediments of Lake Chełmżyńskie and the soil of its watershed. The impact of various forms of chitin on the chitinolytic activity of these microorganisms was investigated. Bacteria isolated from the analyzed environments exhibited the highest chitinolytic activity in the presence of colloidal chitin. High activity was also observed in a culture medium containing shrimp shells. The analysis of chitinolytic activity of actinomycetes demonstrated that strains isolated from the soil had considerably higher activity levels than those isolated from lacustrine water and bottom sediments. All soil actinomycetes exhibited the highest activity in a culture medium containing colloidal chitin and shrimp shells. Actinomycetes collected in water and bottom sediments were characterized by similar activity levels. Chitinolytic fungi exhibited the maximum activity also in a medium containing colloidal chitin. The presence of shrimp shells in a culture medium had the lowest impact on chitinolytic activity. Among the analyzed forms of chitin, the impact of chitin powder on the activity of chitinases was the least stimulating.
10

Biotransformacja materii organicznej pzrez bakterie epifityczne

81%
Lalke-Porczyk E., Swiontek-Brzezinska M., Donderski W.
Acta Agraria et Silvestria. Series Agraria
|
2006
|
tom 49
The accomplished research covered the number and production of the heterotrophic bacteria colonizing the submerged surfaces of the two species of macrophytes: Common Reed (Phragmites australis (Cav.) Trin. ex Steudel) and Hornwort (Ceratophylhim demersum L.). These macrophytes predominate in the littoral zone of the Chelmżyńskie Lake. The ability of the bacteria to grow in the presence of different groups of amino acids and carbohydrates and decompose some biopoly- mers was determined. The greatest number and the highest production rate of the epiphytic bacteria were established to occur in the summer on the reed shoots. Amino acids and carbohy­drates stimulated the development of bacteria isolated from the rigid hornwort's surface consid­erably more strongly; in turn, bacteria covering the reed shoots hydrolyzed macromolecular compounds to a greater degree.
11
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Legionella pneumophilla bacteria in a thermal saline bath

81%
Walczak M., Krawiec A., Lalke-Porczyk E.
Annals of Agricultural and Environmental Medicine
|
2013
|
tom 20
|
nr 4
12

The bacteriological and sanitary state of sewage in an on-site willow wastewater treatment facility

81%
Swiontek B. M., Lalke-Porczyk E., Donderski W.
Polish Journal of Natural Sciences
|
2007
|
tom 22
|
nr 2
284-293
The numbers of heterotrophic bacteria, capable of growing at 22℃ and 37℃, as well as the following indicator bacteria used to determine the sanitary and bacteriological conditions, were determined in an on-site willow wastewater treatment facility in the Czarne Błoto, Zławieś Wielka district: coliforms bacteria (TC), fecal coliforms bacteria (FC), and fecal streptococci (FS). The study demonstrated that the number of heterotrophic bacteria, capable of growing at 22℃ and 37℃, as well as indicator bacteria was greatly reduced after wastewater passed through all stages of treatment in the soil – willow filter. The greatest reduction in the bacterial abundance was observed between the raw sewage that flows into the soil-willow filter and the treated sewage (even in winter). Reduction of coliform and fecal coliform bacteria was the greatest following all stages of sewage treatment (on average 95.2% and 94.6%). The reduction of fecal streptococcus equaled 90.4% on average. The lowest reduction in abundance (on average 82.2%) was observed for heterotrophic bacteria capable of growth at 22℃.
13

Shrimp waste as a respiration substrate for soil microflora of the Chelmzynskie Lake watershed

81%
Swiontek B. M., Lalke-Porczyk E., Donderski W.
Polish Journal of Natural Sciences
|
2008
|
tom 23
|
nr 1
164-177
This study presents results of research on number of heterotrophic bacteria and fungi in soil of the Chełmżyńskie Lake watershed and their role in decomposition of chitin. The authors also examined the level of respiration activity of soil microorganisms in the presence of shrimp waste. Results demonstrate that the number of heterotrophic bacteria and fungi in soil were variable. During the entire research period, the analyzed groups of microorganisms predominated in neutral soils with the number of heterotrophic bacteria significantly exceeding that of fungi. The proportion of microorganisms capable of decomposing chitin was greater among fungi than among heterotrophic bacteria. Chitinolytic bacteria constituted 14-38% of the total number of heterotrophic bacteria and their proportion was higher in alkaline soil. Chitinolytic fungi constituted 31-50% and also dominated in alkaline soil. The conducted analyses demonstrated that chitinolytic activity was higher among heterotrophic bacteria than among fungi. In the presence of shrimp waste, the level of respiration activity of microorganisms of the Chełmżyńskie Lake watershed soil clearly depended on examined factors. The temperature and time of incubation, the soil reaction, and the type of the respiration substrate had a statistically significant impact on this activity. Microorganism respiration activity ranged from 0 to 550 mg O₂ g⁻¹ dry soil mass with the highest values recorded in the summer and lowest, in spring. During the entire research period, the microorganisms inhabiting alkaline soil were more readily able to take advantage of shrimp waste and found shrimp heads the most useful, while shells, the least.
14

Biodegradation of carbendazim by planktonic and benthic bacteria of eutrophic lake Chelmzynskie

81%
Kalwasinska A., Kesy J., Donderski W., Lalke-Porczyk E.
Polish Journal of Environmental Studies
|
2008
|
tom 17
|
nr 4
515-523
This study evaluates the biodegradation of carbendazim (1 mg/l) by homogeneous cultures of planktonic (N=25) and benthic (N=25) bacteria as well as by heterogeneous cultures (N=1) containing a mixture of 25 bacterial strains. The bacteria were collected from a 25 cm subsurface water layer and a 5-10 cm surface layer of bottom sediments of lake Chełmżyńskie. Results indicate that bacterioplankton are better able to decompose carbendazim than benthic bacteria (p<0.05). In the case of decomposition by planktonic bacteria, the mean half-life of carbendazim equaled 40 days. Benthic bacteria, on average, required 60 days to reduce the concentration of fungicide by 37%. The level of biodegradation of carbendazim in mixed cultures of benthic and planktonic bacteria after a 20-day incubation period was lower than the average value of its biodegradation in homogeneous cultures. Forty- and 60-day homogeneous cultures of planktonic bacteria were characterized by a higher mean level of carbendazim biodegradation than that of the mixed culture. Decomposition of the fungicide in 40- and 60-day mixed cultures of benthic bacteria was higher than the mean value of biodegradation of this compound in homogeneous cultures. We demonstrated that among planktonic bacteria, the species Sphingomonas paucimobilis, Aeromonas hydrophila, and Pseudomonas fluorescens were the most efficient in reducing the concentration of carbendazim, while among benthic bacteria, Burkholderia cepacia and two unidentified strains of bacillus were the most efficient.
15

Microbial degradation of shrimp waste in soil

81%
Swiontek Brzezinska M., Lalke-Porczyk E., walczak M., Donderski W.
Polish Journal of Environmental Studies
|
2010
|
tom 19
|
nr 3
627-633
16

Chitinolytic activity of bacteria and fungi isolated from shrimp exoskeletons

81%
Swiontek-Brzezinska M., Lalke-Porczyk E., Donderski W.
Oceanological and Hydrobiological Studies
|
2007
|
tom 36
|
nr 3
17

Physiological properties and taxonomy of epiphytic bacteria in Chelmzynskie Lake in Poland

81%
Lalke-Porczyk E., Donderski W., Malecka M.
Polish Journal of Environmental Studies
|
2004
|
tom 13
|
nr 5
Research was carried out on the number of heterotrophic bacteria inhabiting the surface of macrophytes submerged in water that are dominant in the littoral zone of Chełmżyńskie Lake: common reed, cattail and hornwort. Bacteria were identified and their ability to decompose certain biopolimers was determined. It was found that the number of bacteria growing on helophytes, i.e. common reed and bulrush, increased from spring to summer, and then decreased in autumn. On the surface of hornwort the number of heterotrophic bacteria increased throughout the whole vegetative season, reaching its maximum in autumn. From among all of the isolated strains, lipo-, cellulo- and proteolytic bacteria were dominant. Strains isolated from the surface of cattail were characterized by the potentially highest physiological activity. The generic composition of the isolated strains changed with the development of the macrophytes (season) and depended on the species of plant.
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