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1

Epiphytic bacteria isolated from grape leaves and its effect on Botrytis cinerea Pers.

100%
Krol E.
Phytopathologia Polonica
|
1998
|
tom 16
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

Biodegradation of carbendazim by epiphytic and neustonic bacteria of eutrophic Chelmzynskie Lake

84%
Kalwasinska A., Kesy J., Donderski W.
Polish Journal of Microbiology
|
2008
|
tom 57
|
nr 3
The paper presents a study on biodegradation of carbendazim (1 mg/l) by homogeneous cultures of epiphytic (n = 25) and neustonic (n = 25) bacteria and heterogeneous (n= 1) cultures containing a mixture of 25 bacterial strains isolated from epidermis of the Common Reed (Phragmites australis, (Cav.) Trin. ex Steud.) and surface microlayer (SM ≈ 250 μm) of eutrophic lake Chelmzynskie. Results indicate that epiphytic bacteria are characterized by higher average capacity to decompose carbendazim than neustonic bacteria (p<0.05). The half-life of carbendazim in epiphytic bacterial cultures equaled an average of 60 days. In the same period, neustonic bacteria reduced the concentration of the fungicide by 31 %. The level of carbendazim biodegradation in mixed cultures of epiphytic and neustonic bacteria after 20-day incubation was lower than the biodegradation level in homogeneous cultures. Sixty-day homogeneous cultures of epiphytic and neustonic bacteria were characterized by a higher mean level of carbendazim biodegradation than mixed cultures. After 40-day incubation, mean values of biodegradation of the fungicide in homogeneous and mixed cultures were similar. It was demonstrated that among epiphytic bacteria, Pseutlomonas luteola was the most efficient organism in reducing the concentration of carbendazim. Among neustonic bacteria, Burkholderia cepacia and Aeromonas hydrophila were the most effective in degradation of the fungicide.
4

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

84%
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.
5

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

84%
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.
6

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

84%
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..
7

Epiphytic bacteria inhabiting the yellow waterlily [Nuphar luteum L.]

67%
Donderski W., Kalwasinska A.
Polish Journal of Environmental Studies
|
2002
|
tom 11
|
nr 5
Studies on the development dynamics and the physiological properties of heterotrophic bacteria growing on the surface of the yellow waterlily (Nuphar luteum L.) during the plants’ development cycle were carried out. It was stated that the number of the epiphytic bacteria is different in the examined sections of the plant. The number is higher on bottom parts of petioles and rhizomes but lower on the surface of leaf blades and petioles beneath the leaf blade. The number of the epiphytic bacteria oscillated between 0.54 x 106 and 37.85 x 106 cells per 1g of wet weight of the plant. The gram negative rods dominated among the epiphytic bacteria, the majority of which was slowly growing strains. Among the epiphytic bacteria the most numerous strains were those hydrolyzing fat, starch, and protein; the least numerous were the chitinolytic bacteria.
8

The influence of heavy metals on the activity of chitinases produced by planktonic, benthic and epiphytic bacteria

67%
Donderski W., Swiontek Brzezinska M.
Polish Journal of Environmental Studies
|
2005
|
tom 14
|
nr 6
Research was carried out on the influence of heavy metals on the activity of chitinases produced by chitinolytic bacteria isolated from Moty Bay in Lake Jeziorak. In tests on the concentration of heavy metal ions in the surface water, the highest concentration of copper and zinc ions was found in July in the littoral zone, of cobalt ions in September in the pelagic zone and of lead ions in August, also in the pelagic zone. Studies on the number of chitinolytic bacteria have shown that the highest number of chitinolytic bacteria among the total number of heterotrophic bacteria occurred on macrophytes and in bottom sediments. The highest percentage of chitinolytic bacteria was found in the surface water, and the lowest in the bottom sediments. As follows from research on the influence of heavy metals on the activity of chitinases , in the majority of the strains tested, heavy metal ions inhibited chitinolytic activity as concentration increased.
9

Evaluation of epiphytic bacteria isolated from apple leaves in the control of postharvest apple diseases

67%
Sobiczewski P., Bryk H., Berczynski S.
Journal of Fruit and Ornamental Plant Research
|
1996
|
tom 04
|
nr 1
10

Role of epiphytic bacteria in the utilisation of organic matter

67%
Lalke E., Donderski W., Blotevogel K. H.
Oceanological Studies
|
1996
|
tom 25
|
nr 4
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