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Wyświetlanie 1-10 z 119
Tytuł:
Experimental Observations and Assessment of Landfill Leachate Bioremediation by Autochthonous Fungi Species and their Effective Geoactivities
Autorzy:
Muksy, Renjbar
Kolo, Kamal
Powiązania:
https://bibliotekanauki.pl/articles/2202342.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
autochthonous fungi
pathogenic fungi
biosorption
biomineralization
decolorization
Opis:
Autochthonous fungi are potential successful agents in the process of bioremediation through their efficient adaptation to pollutant toxicity and competition with other microorganisms that are present in the leachate treatment plant. The leachate from municipal waste landfills was an important source of fungi. Even though some of these fungi have the potential to be human pathogens, such strains wh en used in biolo gical treatment approaches may serve as a possible tool for integrating the leachate bioremediation process because of the extracellular enzymes produced by fungal strains. In this study, the leachate sample was tested with regard to four parameters, including total dissolved solids (TDS), electrical conductivity (EC), pH, and the decolorization of the leachate sample by a number of indigenous species of fungi, which were observed by use of the culture techniques. The scanning electron microscope coupled with energy dispersive x-ray analysis, UV-spectrum, and reflected and transmitted polarizing light microscope were used in the research project to o bserve and assess the obtained data from the experimental work. The results indicated the various levels of efficiency of the isolated fungal strains in eliminating color, lowering TDS, EC, and pH through their geoactivities potential in metal biosorption and immobilization by biomineralization of new minerals in the growth environment and eventually reducing the metal bioavailability and toxicity.
Źródło:
Journal of Ecological Engineering; 2023, 24, 1; 312--327
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tolerance of intersterility group isolates of Heterobasidion annosum to low pH and aluminium on solid medium
Autorzy:
Majewska, B
Werner, A.
Lakomy, P.
Powiązania:
https://bibliotekanauki.pl/articles/40967.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
plant pathogenic fungi
pathogenic fungi
root rot
Heterobasidion annosum
low pH
aluminium
tolerance
plant root
Opis:
Tolerance of several strains of the P-, S-, and F- intersterility groups of Heterobasidion annosum to low pH and high concentration of aluminium ions was studied on malt extract agar. There were marked intraspecific, but not intergroup, variations in tolerance to both factors. Some strains were relatively tolerant or sensitive to low pH and aluminium, while the others were tolerant to low pH but sensitive to Al. There was no relationship between tolerance of the strains to low pH and their tolerance to aluminium stress.
Źródło:
Dendrobiology; 2004, 51; 37-41
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mass spectrometry as a useful tool for identifying new therapeutic targets on the cell surface of pathogenic fungi from the genus Candida
Autorzy:
Karkowska-Kuleta, J.
Bocheńska, O.
Powiązania:
https://bibliotekanauki.pl/articles/115505.pdf
Data publikacji:
2014
Wydawca:
Fundacja na Rzecz Młodych Naukowców
Tematy:
proteomics
pathogenic fungi
candidiasis
mass spectrometry
Opis:
Mass spectrometry (MS) is a universal technique with a wide range of applications, including proteomic studies of different organisms, particularly the characterization and sequencing of proteins isolated from specific cellular compartments. It is used for the identification of elements exposed on the cell surface of microbial pathogens, which are involved in the initial contact with the human host, and then in the further development of infection. Given the increasing frequency of invasive fungal infections caused by pathogenic yeast from the genus Candida, especially among patients with severe immunological impairments, it appears advisable to study the diversity of cell wall proteins that arise during subsequent stages of infection and that are responsible for several important phenomena correlated with pathogenesis. This study employed a liquid chromatograph-coupled mass spectrometer equipped with an electrospray ionization source (ESI), and an ion trap analyser. For tandem mass spectrometry, two approaches for fragmentation of ions - collision-induced dissociation (CID) and electron transfer dissociation (ETD) - were used to analyse the mixtures of peptides generated after tryptic digestion of fungal cell wall proteins (i.e. the “bottom-up” approach). Several surface proteins from Candida spp. were identified which could be potential drug targets and candidates for vaccine development.
Źródło:
Challenges of Modern Technology; 2014, 5, 1; 7-14
2082-2863
2353-4419
Pojawia się w:
Challenges of Modern Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
In vitro study on the use of quinoa (Chenopodium quinoa Willd.) extracts from to limit the development of phytopathogenic fungi
Badania in vitro nad wykorzystaniem wyciągów z komosy ryżowej (Chenopodium quinoa Willd.) do ograniczania rozwoju grzybów fitopatogennych
Autorzy:
Gleń-Karolczyk, K.
Witkowicz, R.
Boligłowa, E.
Powiązania:
https://bibliotekanauki.pl/articles/334218.pdf
Data publikacji:
2016
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Maszyn Rolniczych
Tematy:
Chenopodium quinoa
antifungal activity
fungi pathogenic
horseradish roots
aktywność grzybobójcza
grzyby patogeniczne
korzeń chrzanu
Opis:
The aim of the study was to search for alternatives to chemical fungicides currently used in plants protection against Botrytis cinerea, Rhizoctonia solani, Phoma exiqua var. exiqua, Sclerotinia sclerotiorum, Fusarium poae. Various concentrations of aqueous extracts of Chenopodium quinoa Willd leaves, stems and inflorescences were tested in the laboratory conditions. Antifungal activity of the extracts was evaluated based on surface growth and sporulation intensity of the test fungi. The applied concentrations of aqueous extracts (25.0, 10.0, 1.0 and 0.1 mm3·cm−3) significantly modified the examined parameters of particular fungi. The strongest fungistatic activity was noted for 25.0 mm3·cm−3 concentration of C. quinoa stems and inflorescences extracts with respect to B. cinerea. They limited this fungus linear growth by 42.9% and 53.3%, and sporulation by 53.6% and 67.85%, respectively. In turn, a very intense inhibition (53.5-88.3%) in S. sclerotiorum colony growth on the media with higher concentrations of all analyzed types of extracts was accompanied by stimulation of sporulation. The lowest concentration of the leaves extract in 43.1% inhibited the growth of mycelium and in 52.1% sporulation of P. exiqua var. exiqua. Unfortunately, most of the analyzed concentrations to a very little degree inhibited the surface growth of R. solani and F. poae hyphae.
Celem pracy było znalezienie alternatywnych dla chemicznych środków grzybobójczych stosowanych obecnie w ochronie roślin przed Botrytis cinerea, Rhizoctonia solani, Phoma exiqua var. exiqua, Sclerotinia sclerotiorum, Fusarium poae. W warunkach laboratoryjnych testowano różne stężenia wodnych wyciągów z liści, łodyg i kwiatostanów Chenopodium quinoa Willd. Aktywność przeciwgrzybową wyciągów oceniano na podstawie rozrostu powierzchniowego i intensywności zarodnikowania grzybów testowych. Zastosowane stężenia wodnych wyciągów (25,0; 10,0; 1,0 i 0,1 mm3·cm-3) istotnie modyfikowały badane parametry poszczególnych grzybów. Najsilniejszym działaniem fungistatycznym odznaczały się 25,0 mm3·cm-3 stężenia wyciąwów z łodyg i kwiatostanów C. quinoa w odniesieniu do B. cinerea. Ograniczały one odpowiednio o 42,9 i 53,3% rozrost liniowy oraz sporulację w 53,6 i 67,85% tego grzyba. Z kolei na podłożach z wyższymi stężeniami wszystkich analizowanych rodzajów wyciagów obserwowano intensywne hamowanie (53,5-88,3%) rozrostu kolonii S.sclerotiorum, któremu towarzyszyła stymulacja zarodnikowania. Najniższa koncentracja wyciągu z liści w 43,1% hamowała rozrost mycelium oraz w 52,1% sporulację P. exiqua var. exiqua. Niestety, większość analizowanych stężeń w bardzo małym stopniu hamowała powierzchniowy rozrost strzępek R. solani oraz F. poae.
Źródło:
Journal of Research and Applications in Agricultural Engineering; 2016, 61, 3; 132-138
1642-686X
2719-423X
Pojawia się w:
Journal of Research and Applications in Agricultural Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Occurrence of Fusarium Species in Maize Grains for Silage
Autorzy:
Krnjaja, Vesna
Lević, Jelena
Stanković, Slavica
Bijelić, Zorica
Powiązania:
https://bibliotekanauki.pl/articles/2199582.pdf
Data publikacji:
2011-06-21
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
Fusarium spp.
maize
pathogenic fungi
silage
Opis:
Grain samples of two maize hybrids, medium early (ZP434) and late maturity (ZP704), collected during  harvest in 2008 were investigated for contamination by fungi. Grains were plated on agar media and grown  fungi were identified by morphological macroscopic and microscopic characteristics on potato-dextrose agar  (PDA) and synthetic nutrient agar (SNA). Species of the genus Fusarium were the most common in both hybrids, and their presence amounted to 33.89% (ZP434) and 42.00% (ZP704). Other fungi of genera, Acremonium, Alternaria, Aspergillus, Chaetomium, Cladosporium, Nigrospora, Penicillium, Rhizopus and Trichotecium, were isolated from 0 to 41.00%. Four species belonging to the genus Fusarium were identified, of which the species F. verticillioides was the most common with 28.63% in ZP434 and 30.50% in ZP704 hybrids. The presence of F. graminearum, F. proliferatum and F. subglutinans ranged from 3.00% (ZP704) to  .00% (ZP434), 0.13% (ZP434) to 7.00% (ZP704) and 0.13% (ZP434) to 7.00% (ZP704), respectively. Generally, the incidence of every particular fungus was higher in the late maize hybrid with a higher moisture  content than in the medium-early hybrid with a lower moisture content.
Źródło:
Plant Breeding and Seed Science; 2011, 63; 103-108
1429-3862
2083-599X
Pojawia się w:
Plant Breeding and Seed Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fungi pathogenic to humans: molecular bases of virulence of Candida albicans, Cryptococcus neoformans and Aspergillus fumigatus
Autorzy:
Karkowska-Kuleta, Justyna
Rapala-Kozik, Maria
Kozik, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/1040555.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
cryptococcosis
virulence factors
aspergillosis
candidiasis
pathogenic fungi
Opis:
The frequency of severe systemic fungal diseases has increased in the last few decades. The clinical use of antibacterial drugs, immunosuppressive agents after organ transplantation, cancer chemotherapy, and advances in surgery are associated with increasing risk of fungal infections. Opportunistic pathogens from the genera Candida and Aspergillus as well as pathogenic fungi from the genus Cryptococcus can invade human organism and may lead to mucosal and skin infections or to deep-seated mycoses of almost all inner organs, especially in immunocompromised patients. Nowadays, there are some effective antifungal agents, but, unfortunately, some of the pathogenic species show increasing resistance. The identification of fungal virulence factors and recognition of mechanisms of pathogenesis may lead to development of new efficient antifungal therapies. This review is focused on major virulence factors of the most common fungal pathogens of humans: Candida albicans, Aspergillus fumigatus and Cryptococcus neoformans. The adherence to host cells and tissues, secretion of hydrolytic enzymes, phenotypic switching and morphological dimorphism contribute to C. albicans virulence. The ability to grow at 37°C, capsule synthesis and melanin formation are important virulence factors of C. neoformans. The putative virulence factors of A. fumigatus include production of pigments, adhesion molecules present on the cell surface and secretion of hydrolytic enzymes and toxins.
Źródło:
Acta Biochimica Polonica; 2009, 56, 2; 211-224
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Identification of taxa of microscopic fungi occurring on selected herbal plants and possible methods of their elimination
Autorzy:
Jadczak, Paula
Pizoń, Klaudia
Powiązania:
https://bibliotekanauki.pl/articles/1182421.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Ascochyta
Puccinia
Ramularia
medicinal plants
pathogenic fungi
Opis:
The study was conducted in 2014 at the West Pomeranian University of Technology in Szczecin. Its aim was to identify the taxa of microscopic fungi present on selected herbal plants and to propose methods of their elimination. Research material included leaves and stems of affected plants. The material was collected at the end of the growing season (in September). The study identified 11 taxa belonging to two types of fungi: Ascomycetes and Basidiomycetes. Most identified taxa (98.2%) belonged to Ascomycetes. Three species rarely found in Poland were recognized: Ascochyta levistici, Septoria melissae and Phragmidium sanguisorbae. Diseases of herbal plants should preferably be eliminated by using biological methods and appropriate agrotechnical treatments.
Źródło:
World Scientific News; 2017, 69; 1-17
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Potentially pathogenic yeasts from soil of children’s recreational areas in the city of Łódź (Poland)
Autorzy:
Wójcik, Anna
Kurnatowski, Piotr
Błaszkowska, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/2179153.pdf
Data publikacji:
2013-06-01
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:
pathogenic fungi
yeasts
soil
children's recreational areas
Opis:
Objectives: Yeasts may become potential human and animal pathogens, particularly for individuals with a depressed immune system. Their presence in the environment, especially in soil, may favour their spread into human ontocenoses. Materials and Methods: Eighty-four soil samples obtained from 21 children's recreational sites in Łódź in autumn 2010 and spring 2011 were evaluated. The yeasts were isolated by classical microbiological methods and identified on the basis of morphological and biochemical features. Results: The fungi were found in 73.8% and in 69.0% of the examined samples collected in autumn and spring, respectively. Among 97 isolates of yeasts, the species potentially pathogenic to humans and animals were Candida colliculosa, C. guilliermondii, C. humicola, C. inconspicua, C. lambica, C. lusitaniae, C. pelliculosa, C. tropicalis, Cryptococcus albidus, C. laurentii, C. neoformans, C. terreus, Kloeckera japonica, Geotrichum candidum, G. penicillatum, Rhodotorula mucilaginosa, R. glutinis, Saccharomyces cerevisiae, Sporobolomyces salmonicolor and Trichosporon cutaneum. The most frequently isolated fungi included the genus Cryptococcus (38 isolates) and two species: Rhodotorula glutinis (15), Trichosporon cutaneum (14). C. neoformans, an etiological factor of cryptococcal meningitis, was present in the sandpits of 3 kindergartens. The Candida species were identified from park playgrounds and school sports fields mainly in autumn 2010 (14 isolates), in spring 2011 - only 1 isolate. The concentration of fungal species in particular samples varied considerably, but in the majority of samples, fungi were present at concentration of up to 1×10² CFU/1 g of soil. Conclusions: Yeasts were present in the soil of parks, schools and kindergarten recreational areas; the fact may pose a health risk to humans, especially to children, and this type of biological pollution should be regarded as a potential public health concern.
Źródło:
International Journal of Occupational Medicine and Environmental Health; 2013, 26, 3; 477-487
1232-1087
1896-494X
Pojawia się w:
International Journal of Occupational Medicine and Environmental Health
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-10 z 119

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