Wyniki wyszukiwania - AGRO

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Fungi inhabiting decaying grapevine [Vitis spp.] cuttings

100%

Krol E.

Journal of Plant Protection Research

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2006

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tom 46

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nr 4

353-358

The purpose of the study, carried out in the years 2001–2003 was to determine which fungal species inhabited decaying grapevine cuttings during callusing and soon after planting them into pots. The plant material was collected from 5 commercial plantations and 8 cultivars, which were most frequently cultivated. From each plantation and cultivar 20 cuttings with symptoms of the growth inhibition or decay were randomly sampled during the callusing period i.e. March/April (term I) and 2–3 months after planting the cuttings into pots i.e. June/July (term II). The results showed that from affected grapevine cuttings Phomopsis viticola, Botrytis cinerea, Alternaria alternata and Fusarium spp. were isolated most frequently. Moreover, it was found that after planting young cuttings into the pots, numerous isolates of soil borne pathogenes were obtained, among others Cylindrocarpon spp., Phytophthora sp., Rhizoctonia solani, Fusarium spp.

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Some aspects of host-fungus interactions

100%

Kurnatowski P., Kurnatowska A. J.

Wiadomości Parazytologiczne

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2001

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tom 47

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nr 4

3

Fungi colonizing potato stem bases depending on the method of nitrogen fertilization

100%

Czajka W., Cwalina-Ambroziak B., Brzozowska I., Ciecko Z., Zolnowski A.

Polish Journal of Natural Sciences

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2002

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tom 12

4

Invertase activity of psychrotrophic fungi

100%

Skowronek M., Kuszewska J., Fiedurek J., Gromada A.

Annales Universitatis Mariae Curie-Sklodowska. Sectio C, Biologia

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2003

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tom 58

5

Fungal culture collection of Biochemistry Department of the Maria Curie-Sklodowska University in Lublin

100%

Grzywnowicz K., Leonowicz A.

Applied Biology Communications. Lublin Scientific Center

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1992

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tom 02

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nr 6-7

6

Heterologous expression of genes in filamentous fungi

100%

Kruszewska J. S.

Acta Biochimica Polonica

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1999

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tom 46

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nr 1

Isolation of some biologically important proteins from natural sources was found to be too expensive or scarcely possible (human proteins). The problem could be solved by expression of heterologous genes. Many biologically active proteins have been successfully expressed in filamentous fungi, some of them, however, at a low level. Thus, improvement of this technique appears to be a very important task. The process comprises several steps. Some of them, such as efficient transformation, vector construction, processing of signal sequences, post-translational modifications and secretion of the expressed proteins, have been intensively investigated. This review presents obstacles and problems encountered in expression of heterologous genes and discusses strategies of development in this area.

7

The action of some essential oils on fungi

100%

Bartynska M., Budzikur-Ramza E.

Bulletin of the Polish Academy of Sciences. Biological Sciences

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2001

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tom 49

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nr 4

8

Studies of morphological structures of Monilia coryli

100%

Zalewska E., Machowicz-Stefaniak Z.

Acta Mycologica

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2000

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tom 35

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nr 1

9

Parasites and fungi as risk factors for human and animal health

88%

Goralska K., Blaszkowska J.

Annals of Parasitology

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2015

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tom 61

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nr 4

Recent literature data suggests that parasitic and fungal diseases, which pose a threat to both human and animal health, remain a clinical, diagnostic and therapeutic problem. Attention is increasingly paid to the role played by natural microbiota in maintaining homeostasis in humans. A particular emphasis is placed on the possibility of manipulating the human microbiota (permanent, transient, pathogenic) and macrobiota (e.g., Trichuris suis) to support the treatment of selected diseases such as Crohn’s disease, obesity, diabetes and cancer. Emphasis is placed on important medical species whose infections not only impair health but can also be life threatening, such as Plasmodium falciparum, Echinococcus multilocularis and Baylisascaris procyonis, which expand into areas which have so far been uninhabited. This article also presents the epidemiology, diagnosis and treatment of opportunistic parasitoses imported from the tropics, which spread across large groups of people through human-to-human transmission (Enterobius vermicularis, Sarcoptes scabiei). It also discusses the problem of environmentally-conditioned parasitoses, particularly their etiological factors associated with food contaminated with invasive forms (Trichinella sp., Toxoplasma gondii). The analysis also concerns the presence of developmental forms of geohelminths (Toxocara sp.) and ectoparasites (ticks), which are vectors of serious human diseases (Lyme borreliosis, anaplasmosis, babesiosis), in the environment. Mycological topics contains rare cases of mycoses environmentally conditioned (CNS aspergillosis) and transmissions of these pathogens in a population of hospitalized individuals, as well as seeking new methods used to treat mycoses.

10

Microbiological activity within various fractions of soil aggregates

88%

Dabek-Szreniawska M., Wilke B. M.

Zeszyty Problemowe Postępów Nauk Rolniczych

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1996

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tom 436

The measurement of respiration activity of microorganisms in particular aggregate fractions for 3 soils was performed. And an attempt was made to determine the relation between the quantity of bacteria and fungi. The correlation between the size of aggregates and respiration activity of microorganisms was found out.

11

Optimization of growth conditions for xylanase production by Aspergillus niger in solid state fermentation

88%

Kavya V., Padmavathi T.

Polish Journal of Microbiology

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2009

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tom 58

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nr 2

125-130

The objectives of the present study were isolation, identification and characterization of xylanase producing fungi, optimization of medium composition and cultural conditions for xylanase enzyme production using cheaper sources. The fungal strains were isolated from garden soil by serial dilution technique and Aspergillus niger was identified and isolated in pure form. In conformation screening by congo red test, based on the reddish zone of enzyme activity formation in oat spelt xylan agar plates, A. niger was selected and optimized for xylanase enzyme production in solid state fermentation using cheaper sources like wheat bran, rice bran, soya bran, ragi bran and saw dust. Maximum enzyme activity was observed in wheat bran (9.87 U/ml). The use of wheat bran as a major carbon source is particularly valuable because oat spelt xylan or birch wood xylan are more expensive. The effects of time course, incubation substrate, inoculum size, moisturizing agent, moisture content, temperature and volume of fermentation medium on the production of xylanase were studied. The maximum xylanase production (12.65 U/ml) was observed at optimized condition, incubation temperature of 28°C after 6 days of incubation period while minimum production (9.38 U/ml) at unoptimized condition. The maximum production of enzyme was found to be in wheat bran when the volume of fermentation medium was kept as 10 g/250 ml conical flasks, with mineral solution as moisturizing agent and moisture ratio 1:0.7. Thus the present study proved that the fungal strain A. niger used is highly potential and useful for xylanase production.

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Rhythm of sporulation within the section Penicillium clavigerum. I. Induction of endogenous rhythms in Penicillium clavigerum Demelius 310.48.I

88%

Piskorz-Binczycka B.

Acta Biologica Cracoviensia. Series Botanica

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1991

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tom 33

13

The amino acids composition and contents of some vitamins in fungal mycelia growne medium containing lignosulphonates

88%

Wojtas-Wasilewska M., Luterek J., Rogalski J., Leonowicz A.

Applied Biology Communications. Lublin Scientific Center

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1992

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tom 02

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nr 5

14

The fungus Penicillium notatum 1, a new source of dextranase

88%

Szczodrak J., Pleszczynska M., Fiedurek J.

Bulletin of the Polish Academy of Sciences. Biological Sciences

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1994

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tom 42

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nr 2

15

The first records of two lichenicolous fungi, Lichenoconium pyxidatae and Taeniolella beschiana, in Poland

88%

Jando K., Kowalewska A., Kukwa M.

Fragmenta Floristica et Geobotanica

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2000

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tom 45

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nr 1-2

16

Start of IOR collection of plant pathogens

88%

Rataj-Guranowska M.

Phytopathologia Polonica

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1995

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tom 10

17

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

88%

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

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2007

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tom 14

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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.

18

Mycoherbicidal potential of Alternaria alternata ITCC4896 for the control of Parthenium hysterophorus

88%

Saxena S., Kumar M.

Journal of Plant Protection Research

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2007

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tom 47

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nr 2

Mycoherbicides are special biotechnology products which contain fungi or fungal metabolites as nonchemical alternatives thereby reducing the input of harmful chemicals to control noxious weeds. The present communication emphasizes on the potential of an indigenous isolate of Alternaría alternata ITCC 4896 as a mycoherbicide for the global weed - Parthenium hysterophorus. Of the various spore concentrations tested by in vitro Detached Leaf Bioassay, 1x106 spores/ml was the most effective inducing 89.2% leaf area damage on the 7th day and was further tested by Whole Plant Bioassay. Both in vitro Detached Leaf Bioassay and Whole Plant Bioassay exhibited a similar trend in disease development showing 50% damage at 96 hours post treatment. However, 100% mortality was observed in the Whole Plant Bioassay on the 7th day. This is the very first report on the bioweedicidal potential of A. alternata ITCC 4896 (LC#508) for use as a mycoherbicide for P. hysterophorus.

19

Purification and characterization of a glutathione S-transferase from Mucor mucedo

88%

Hamed R. R., Abu-Shady M. R., El-Beih F. M., Abdalla A. M. A., Afifi O. M.

Polish Journal of Microbiology

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2005

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tom 54

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nr 2

An intracellular glutathione transferase was purified to homogenity from the fungus, Mucor mucedo, using DEAE-cellulose ion-exchange and glutathione affinity chromatography. Gel filtration chromatography and SDS-PAGE revealed that the purified GST is a homodimer with approximate native and subunit molecular mass of 53 kDa and 23.4 kDa, respectively. The enzyme has a pI value of 4.8, a pH optimum at pH 8.0 and apparent activation energy (Ea) of 1.42 kcal mol⁻¹. The purified GST acts readily on CDNB with almost negligible peroxidase activity and the activity was inhibited by Cibacron Blue (IC₅₀ 0.252 μM) and hematin (IC₅₀ 3.55 μM). M. mucedo GST displayed a non-Michaelian behavior. At Iow (0.1-0.3 mM) and high (0.3-2 mM) substrate concentration, Km(GSH) was calculated to be 0.179 and 0.65 mM, whereas Km(CDNB) was 0.531 and 11 mM and kcat was 39.8 and 552 s⁻¹, respectively. The enzyme showed apparent pKa values of 6-6.5 and 8.0.

20

Mutants among hetero- and autotrophs and the preservation of characteristic features

88%

Fiema J., Pilipowicz M.

Acta Physiologiae Plantarum

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1997

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tom 19

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nr 2

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