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Viability of fungal and actinomycetal spores after microwave radiation of building materials

100%

Gorny R. L., Mainelis G., Wlazlo A., Niesler A., Lis D. O., Marzec S., Siwinska E., Ludzen-Izbinska B., Harkawy A., Kasznia-Kocot J.

Annals of Agricultural and Environmental Medicine

|

2007

|

tom 14

|

nr 2

The effects of microwave radiation on viability of fungal and actinomycetal spores growing on agar (medium optimal for growth) as well as on wooden panel and drywall (common building construction/fi nishing materials) were studied. All materials were incubated at high (97-99%) and low (32-33%) relative humidity to mimic “wet” and “dry” environmental conditions. Two microwave power densities (10 and 60 mW/cm2) and three times of exposure (5, 30, and 60 min) were tested to fi nd the most effective parameters of radiation which could be applied to non-invasive reduction or cleaning of building materials from microbial contaminants. Additionally, a control of the surface temperature during the experiments allowed differentiation between thermal and microwave effect of such radiation. The results showed that the viability of studied microorganisms differed depending on their strains, growth conditions, power density of microwave radiation, time of exposure, and varied according to the applied combination of the two latter elements. The effect of radiation resulting in a decrease of spore viability on “wet” wooden panel and drywall was generally observed at 60 min exposure. Shorter exposure times decreased the viability of fungal spores only, while in actinomycetes colonizing the studied building materials, such radiation caused an opposite (supporting growth) effect.

2

Dependence of aminoglycoside 3'-phosphotransferase VIII activity and antibiotic resistance on Ca2plus - dependent protein serine-threonine kinases in actinomycetes

86%

Danilenko V. N., Elizarov S. M., Alekseeva M. G.

Cellular and Molecular Biology Letters

|

2005

|

tom 10

|

nr Suppl.2

3

Mutual antagonism between fluorescent pseudomonads and soil actinomycetes

86%

Kaszubiak H.

Polish Journal of Environmental Studies

|

1998

|

tom 07

|

nr 4

The inhibition of 23 strains of actinomycetes by 7 strains of fluorescent pseudomonads and vice versa, on 4 different media, was examined. The antagonism of pseudomonads was more frequent and more intense than that of actinomycetes. Inhibition was observed in pseudomonads and actinomycetes of both kinds of strains, antagonistic and non-antagonistic to Fusarium oxysporum. Some media were more favorable to the an-tagonism of pseudomonads and others to that of actinomycetes, hence in identical environmental conditions mutual antagonism between the two counter-partners occurred only rarely.

4

Nonfluorescent pseudomonads in soils and hortical substrates, their numbers and properties

72%

Kaszubiak H.

Polish Journal of Environmental Studies

|

2000

|

tom 09

|

nr 5

391-396

Nonfluorescent pseudomonads have been studied by estimating their numbers in different soils and hortical substrates as well as some physiological properties and antagonistic relationships between them and fluorescent pseudomonads and actinomycetes. Nonfluorescent pseudomonads, depending on the studied soil or substrate, constituted 7-10% of the total number of bacteria from genus Pseudomonas, and the dominant among them were pectinolytic psychrotrophs. Antagonism of nonfluorescent pseudomonads was less frequent and less intense than that of fluorescent pseudomonads as counter-partners. On the other hand, in the system of interrelationships with actinomycetes, the antagonism of nonfluorescent pseudomonads was relatively more frequent, though its intensity was lower.

5

Evaluation of microbial air quality in a forest recreation park

72%

Malecka-Adamowicz M., Donderski W., Okoniewska A.

Polish Journal of Environmental Studies

|

2010

|

tom 19

|

nr 1

107-113

Bioaerosols significantly influence indoor and outdoor air quality and may cause numerous allergies and diseases. Our study presents results of an evaluation of air quality in the forest recreation park in Myślęcinek. In the forest recreation park in Myślęcinek, microbiological air tests were conducted with the use of two methods of air sampling, namely the sedimentation method and the impaction method. The analysis indicate that mould fungi were the most abundant, constituting nearly 66% of all the microbial forms according to the sedimentation method, or 75% according to the impaction method. Heterotrophic bacteria were less numerous, making up to 32% of all microorganisms (the sedimentation method) or 24% (the impaction method). Actinomycetes and mannitol-positive staphylococci occurred in minimal concentrations. The highest count of microorganisms was recorded at Site V located on the verge of the forest near the tram terminus in Rekreacyjna Street, though staphylococci were the most abundant at Site I in the Polish Fauna Zoo Garden. The air was of high quality (containing the smallest number of microorganisms) at Site III located near Lake Myślęcińskie.

6

Culturable microorganisms in sandy beaches in South Baltic Sea

72%

Mudryk Z. J., Podgorska B.

Polish Journal of Ecology

|

2007

|

tom 55

|

nr 2

The abundance of culturable heterotrophic microorganisms (bacteria, fungi, yeasts, actinomycetes) and their spatial and vertical variability were studied in marine-bay (“Sopot”) and open-sea (“Czołpino”) sandy beaches (southern Baltic Sea). Among studied microorganisms, halotolerant (13.4 – 308.4 × 10³ CFU g⁻¹ dry wt. of sand) and limnotolerant (7.4 – 69.2 × 10³ CFU g⁻¹ dry wt. of sand) bacteria predominated in the sand of both beaches. Filamentous fungi, yeasts, and actinomycetes constituted only a slight percentage (0.2–3.0%) of all isolated heterotrophic microorganisms. The numbers of all studied microorganisms were much higher on marine-bay beach characterized by a high level of accumulation of organic matter (4.1 mg g⁻¹ dry wt. of sand) than in the sand of the open-sea beach, where the content of organic matter was lower (1.9 mg g⁻¹ dry wt. of sand). There were marked differences in the horizonatal profile distribution of heterotrophic microorganisms inhabiting marine-bay and open-sea beaches. In both studied beaches higher numbers of microorganisms were determined in the surface (0–5 cm) than in subsurface (5–10cm) sand layer.

7

Physico-chemical parameters and heterotrophic microorganisms of underground waters of Omulewskie Reservoir aquifers in the Mazurian Lake District

72%

Kochanska E., Niewolak S.

Polish Journal of Environmental Studies

|

1997

|

tom 06

|

nr 1

This work presents the results of research on physico-chemical and microbiological amounts of heterotrophic bacteria, Actinomycetes, filamentous and yeast fungi in underground waters of aquifers of Omulewskie Reservoir in the Mazurian Lake District in 1989-1992/1993. The examination included water from 11 wells (20-64 m) and 3 piezometric bore-holes (6.5-23.5 m) on woodland (control well), managed by individual farmers and on large farms. Colour of water, pH, dry mass, and total hardness of the examined water samples did not exceed the values accepted for natural hydrochemical background. Electrolytic conductivity rarely exceeded 400 μS/cm. The concentration of the main cations and anions classifies the waters of the examined wells into four types: 1. carbonate-calcium-magnesium; 2. carbonate-calcium; 3. carbonate-chloride-calcium and 4. carbonate-calcium-sulphate. The concentration of oxygen was the lowest in the water from wells situated on large farms, the highest on the area of woodland; on the contrary BOD5. Oxidability only in the water of the wells on the woodland area was the same as the values accepted for the natural hydrochemical background. The amount of total nitrogen was the lowest in the water from the wells situated on large farms and it was correlated with respectively low or high amounts of total phosphorus. The amount of iron reached higher values only in the water of some wells on the area of large farms. Heterotrophic bacteria with higher optimal temperatures and oligotrophic bacteria were the most numerous among heterotrophic microorganisms. Actinomycetes and filamentous fungi were rare and in minimal quantities. There were more yeast fungi, especially those which did not produce carotenoid dyes.

8

Interactions between soil microorganisms: bacteria, actinomycetes and entomopathogenic fungi of the genera Beauveria and Paecilomyces

72%

Popowska-Nowak E., Bajan C., Augustyniuk-Kram A., Kolomiec E., Chikileva A., Lobanok A.

Polish Journal of Ecology

|

2003

|

tom 51

|

nr 1

The effect of volatile and non-volatile metabolites produced by bacteria Bacillus subtilis. B. pumilus, Pseudomonas aurantiaca and actinomycetes Streptomyces flavescens, S. griseoviridis on growth of strains of entomopathogenic fungi Paecilomyces farinosus, P. fumosoroseus, Beauveria bassiana was studied in common cultures on artificial media. Fungal strains responded in various ways to non-volatile metabolites of the same species of bacteria or actinomycetes. Fungi of the genus Paecilomyces had as a rule higher competitive abilities than those of the genus Beauveria. Volatile metabolites produced by actinomycetes totally inhibited growth of all studied fungal strains while those produced by bacteria had only a fungistatic effect.

9

Biological activity of phenylpropionic acid isolated from a terrestrial Streptomycetes

72%

Narayana K. J. P., Prabhakar P., Vijayalakshmi M., Venkateswarlu Y., Krishna P. S. J.

Polish Journal of Microbiology

|

2007

|

tom 56

|

nr 3

The strain ANU 6277 was isolated from laterite soil and identified as Streptomyces sp. closely related to Streptomyces albidoflavus cluster by 16S rRNA analysis. The cultural, morphological and physiological characters of the strain were recorded. The strain exhibited resistance to chloramphenicol, penicillin and streptomycin. It had the ability to produce enzymes such as amylase and chitinase. A bioactive compound was isolated from the strain at stationary phase of culture and identified as 3-phenylpropionic acid (3-PPA) by FT-IR, EI-MS, ¹H NMR and ¹³C NMR spectral studies. It exhibited antimicrobial activity against different bacteria like Bacillus cereus, B. subtilis, Escherichia coli, Klebsiella pneumoniae, Proteus vulgaris, Pseudomonas aeruginosa, P. flourescens, Staphylococcus aureus and some fungi including Aspergillus flavus, A. niger, Candida albicans, Fusarium oxysporum, F. udum and Penicillium citrinum. The antifungal activity of 3-PPA of the strain was evaluated in in vivo and in vitro conditions against Fusarium udum causing wilt disease in pigeon pea. The compound 3-PPA is an effective antifungal agent when compared to tricyclozole (fungicide) to control wilt caused by F. udum, but it exhibited less antifungal activity than carbendazim.

10

Degradation of chitin in natural environment: role of actinomycetes

58%

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.

11

Multilevel analysis of the impact of environmental factors and agricultural practices on the concentration in hay of microorganisms responsible for farmer's lung disease

58%

Gbaguidi-Haore H., Roussel S., Reboux G., Dalphin J.-C., Piarroux R.

Annals of Agricultural and Environmental Medicine

|

2009

|

tom 16

|

nr 2

219-225

12

Influence of water treatment plant on microbiological composition of air bioaerosol

58%

Breza-Boruta B., Paluszak Z.

Polish Journal of Environmental Studies

|

2007

|

tom 16

|

nr 5

663-670

Microbiological research of bioaerosols was carried out at the Municipal Sewage Treatment Plant in Toruń. The concentration of selected bacteria, fungi and actinomycetes in the atmospheric air was estimated in the vicinity of sand catchers, aeration chambers and maturing compost piles, as well as 100 m beyond the treatment plant. It was found that the air at the test stands showed different degrees of microbiological pollution. The largest bioaerosol emission sources were the sand catcher and the maturing compost storage facility. The total number of bacteria and fungi amounted to a maximum of 104 CFU m-3 and of actinomycetes - 103 CFU m-3. The bacteria of the genus Pseudomonas (fluorescent subgroup) occurred at all the stands throughout the study except December. The number of Escherichia coli and bacteria of the genera Enterococcus and Salmonella remained at the very low level of about 10'CFU m-3, and of all these bacteria only fecal streptococci D-type were isolated at stand 4 (beyond the treatment plant). On the basis of the research carried out and the results obtained at the control stand one may conclude that the test facility does not pose a hazard in respect of the tested bacteria emission.

13

Influence of some statins on bacteria and actinomyces

58%

Targonski R., Kucharski J., Wyszkowska J.

Journal of Elementology

|

2006

|

tom 11

|

nr 4

In an in uitro experiment the effect of three statins (atorvastatin [Sortis], simvastatin [Zocor], fluvastatin [Lescol]) on the growth of 5 bacterial strains Bacillus subtilis, Bacillus cereus, Proteus vulgaris, Pseudomonas fluorescens, Escherichia coli and 4 saprophytic actinomycetes Streptomyces longisporoflavus, Streptomyces intermedius, Streptomyces odoriver, Streptomyces viridis was tested. The experiments were carried out on solidified substrata with microorganisms covered with filter paper rings soaked with aqueous solution of every tested statin used in different concentrations. It was found that examined substances can inhibit the growth of certain saprophytic microorganisms. Fluvastatin rather than simvastatin or atorvastatin produces stronger effect on bacteria and actinomycetes.

14

Effect of 30-year cultivation of apple trees on chemical and biochemical conditions of soil designed for replantation

58%

Pacholak E., Zydlik Z., Rutkowski K.

Zeszyty Problemowe Postępów Nauk Rolniczych

|

2009

|

tom 536

Badania zostały przeprowadzone w sadzie Terenowej Stacji Doświadczalnej Katedry Sadownictwa Uniwersytetu Przyrodniczego w Poznaniu położonym na terenie RSGD w Przybrodzie. Jesienią 2008 roku po zakończeniu zbiorów wykarczowano 30 letni sad jabłoniowy, a stanowisko to zostało przeznaczone do zastosowania replantacji. Wiosną 2008 roku rozpoczęto badania biochemiczne gleby określając m.in. aktywność proteazy, dehydrogenazy i ureazy w glebie (w okresie kwitnienia, latem i po zbiorach owoców). Wykonano również analizy nematologiczne i mikrobiologiczne gleby. Wszystkie analizy wykonano w czterech powtórzeniach oddzielnie dla każdej kombinacji nawożenia. Dodatkowo wybrano teren, na którym od jesieni 1996 roku po wykarczowaniu drzew nie stosowano żadnej uprawy oraz nowinę - gleba wcześniej użytkowana rolniczo. Przeprowadzone analizy wykazały wzrost liczebności grzybów i promieniowców w glebie 30 letniego sadu jabłoniowego. Wyższa była też liczebność nicieni z rodzaju Pratylenchus spp. i Paratylenchus spp. Niższa była również aktywność dehydrogenazy w glebie sadu jabłoniowego, co może świadczyć o obniżonej aktywności mikrobiologicznej gleby i tym samym jej zmęczeniu.

15

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

58%

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.

16

Effect of soil fatigue prevention methods on microbiological soil status in replanted apple tree orchard. Part II. Number of bacteria

58%

Rutkowski K., Pacholak E., Zydlik Z.

Electronic Journal of Polish Agricultural Universities. Series: Horticulture

|

2006

|

tom 09

|

nr 4

17

The characteristics of selected environmental bacteria

58%

Sliwa-Dominiak J., Deptula W.

Advances in Agricultural Sciences

|

2011

|

tom 14

|

nr 1-2

18

Screening of Actinomycetes from mangrove ecosystem for L-asparaginase activity and optimization by response surface methodology

58%

Usha R., Mala K. K., Venil C. K., Palaniswamy M.

Polish Journal of Microbiology

|

2011

|

tom 60

|

nr 3

Marine actinomycetes were isolated from sediment samples collected from Pitchavaram mangrove ecosystem situated along the southeast coast of India. Maximum actinomycete population was noted in rhizosphere region. About 38% of the isolates produced L-asparaginase. One potential strain KUA106 produced higher level of enzyme using tryptone glucose yeast extract medium. Based on the studied phenotypic characteristics, strain KUA106 was identified as Streptomyces parvulus KUA106. The optimization method that combines the Plackett-Burman design, a factorial design and the response surface method, which were used to optimize the medium for the production of L-asparaginase by Streptomycetes parvulus. Four medium factors were screened from eleven medium factors by Plackett-Burman design experiments and subsequent optimization process to find out the optimum values of the selected parameters using central composite design was performed. Asparagine, tryptone, d))extrose and NaCl components were found to be the best medium for the L-asparaginase production. The combined optimization method described here is the effective method for screening medium factors as well as determining their optimum level for the production of L-asparaginase by Streptomycetes parvulus KUAP106.

19

Filamentous microorganisms and their fragments in indoor air - a review

58%

Gorny R. L.

Annals of Agricultural and Environmental Medicine

|

2004

|

tom 11

|

nr 2

The paper summarizes the current state of knowledge regarding the role of filamentous microorganisms (i.e., fungi and actinomycetes) and their submicrometer propagules (fragments) in formation of indoor bioaerosol. It discusses the importance of water damages in buildings and the role of humidity as a cause of fungal and actinomycetal contamination and subsequent deterioration of indoor spaces. The importance of the size of airborne microbial propagules for adverse health effects is broadly commented as well. Regarding the microbial fragments, the method of their release from the contaminated surfaces (including factors influencing their aerosolization, i.e., air velocity, colony structure, moisture conditions, vibration of the surface, time factor), modern measurement techniques and newly obtained results of the immunological reactivity of fragments are discussed. The novel ideas concerning the dynamic description of the release process of microbial propagules from their sources are also presented.

20

Streptomyces griseoviridis as the antagonist of plant pathogens

58%

Kolomiets E. I., Zdor N. A., Romanovskaya T. V., Lobanok A. G., Adamovich O. T.

Bulletin of the Polish Academy of Sciences. Biological Sciences

|

1999

|

tom 47

|

nr 2-4

Ograniczanie wyników

Viability of fungal and actinomycetal spores after microwave radiation of building materials

Dependence of aminoglycoside 3'-phosphotransferase VIII activity and antibiotic resistance on Ca2plus - dependent protein serine-threonine kinases in actinomycetes

Mutual antagonism between fluorescent pseudomonads and soil actinomycetes

Nonfluorescent pseudomonads in soils and hortical substrates, their numbers and properties

Evaluation of microbial air quality in a forest recreation park

Culturable microorganisms in sandy beaches in South Baltic Sea

Physico-chemical parameters and heterotrophic microorganisms of underground waters of Omulewskie Reservoir aquifers in the Mazurian Lake District

Interactions between soil microorganisms: bacteria, actinomycetes and entomopathogenic fungi of the genera Beauveria and Paecilomyces

Biological activity of phenylpropionic acid isolated from a terrestrial Streptomycetes

Degradation of chitin in natural environment: role of actinomycetes

Multilevel analysis of the impact of environmental factors and agricultural practices on the concentration in hay of microorganisms responsible for farmer's lung disease

Influence of water treatment plant on microbiological composition of air bioaerosol

Influence of some statins on bacteria and actinomyces

Effect of 30-year cultivation of apple trees on chemical and biochemical conditions of soil designed for replantation

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

Effect of soil fatigue prevention methods on microbiological soil status in replanted apple tree orchard. Part II. Number of bacteria

The characteristics of selected environmental bacteria

Screening of Actinomycetes from mangrove ecosystem for L-asparaginase activity and optimization by response surface methodology

Filamentous microorganisms and their fragments in indoor air - a review

Streptomyces griseoviridis as the antagonist of plant pathogens