Wyniki wyszukiwania

1

Effects of tocopherol deficiency on photosynthetic electron transport under low light

100%

Niewiadomska E.

Acta Physiologiae Plantarum

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2018

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tom 40

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nr 11-11th International Conference Plant Functioning under Environmental Stress...

2

Participation of citric acid and isocitric acid in the diurnal cycle of carboxylation and decarboxylation in the common ice plant

63%

Gawronska K., Niewiadomska E.

Acta Physiologiae Plantarum

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2015

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tom 37

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nr 03

In this paper we analyzed changes in the concentration of the three carboxylic acids (malic acid, citric acid and isocitric acid) during the salinity-induced C3– CAM shift in Mesembryanthemum crystallinum. We documented that a nocturnal accumulation of citrate preceded that of malate, and that the CAM-dependent increase in citric acid was about 100–times higher than that of malic acid. The induction of CAM was accompanied by an increased activity of cytosolic NADP-dependent isocitrate dehydrogenase (NADP-ICDH, E.C 1.1.1.42) and by decreased activities of mitochondrial enzymes: fumarase (E.C 4.2.1.2) and NAD-dependent ICDH (E.C 1.1.1.41). Moreover, the activity of citrate synthase (E.C 2.3.3.1) was increased during the nocturnal phase of CAM. Altogether, obtained data suggest that some part of the product of a primary carboxylation (oxaloacetic acid) may pass through the mitochondria at night for reduction and, in form of citrate and isocitrate, may leave the mitochondria to support a daytime decarboxylation.

3

Determination of some oxidative stress parameters in variegated leaves of Chlorophytum comosum [Thunb] Bak

63%

Niewiadomska E., Miszalski Z.

Acta Physiologiae Plantarum

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1997

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tom 19

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nr 1

A significantly enhanced production of ethane due to sulphite treatment was observed only in the green fragments of variegated Chlorophytum comosum leaves but no increase in MDA content was found after sulphite treatment either in the green or in the white leaf fragments. The activity of SOD showed a tendency to increase while that of catalase significantly decreased only in the green leaf fragments after SO₂ fumigation. The higher level of oxidative damage in the green tissue could probably result from the Haber-Weiss reaction of generation of HO.

4

The effect of Fd-NADP oxido-reductase on oxidation of SO2

63%

Miszalski Z., Niewiadomska E.

Bulletin of the Polish Academy of Sciences. Biological Sciences

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1992

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tom 40

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nr 4

5

Zmiany aktywnosci katalazy i dysmutazy anionorodnika ponadtlenkowego w lisciach Mesembryanthemum crystallinum L.

51%

Misztalski Z., Niewiadomska E., Slesak I.

Działalność Naukowa PAN. Wybrane Zagadnienia

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2003

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tom 16

109-110

6

Phytotron chambers for plant exposure to ozone

51%

Skoczowski A., Pienkowski S., Niewiadomska E., Miszalski Z.

Archiwum Ochrony Środowiska

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2000

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tom 26

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nr 2

129-135

7

Effect of different levels of air pollution on photosynthetic activity of some lichens

51%

Niewiadomska E., Jarowiecka D., Czarnota P.

Acta Societatis Botanicorum Poloniae

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1998

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tom 67

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nr 3-4

8

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Whether ferredoxin-dependent cyclic electron transport (CET) limits ROS production in Thelungiella salsuginea?

51%

Wiciarz M., Pilarska M., Kruk J., Niewiadomska E.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

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2013

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tom 94

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nr 2

9

Czy rosliny gorskie przezywaja stres?

51%

Kepa E., Niewiadomska E., Miszalski Z.

Aura

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2002

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nr 02

23-25

In the common meaning the stress is usually related to humans and animals. Plants are also exposed to a number of factors with such an intensity that these factors disturb their growth and development. Especially alpine plants as they grow in especially difficult conditions and are exposed to a variety of natural factors and the impact of living organisms. The article addresses the question posed in the title.

10

Mozliwosci wykorzystania halofitow w praktyce

51%

Miszalski Z., Niewiadomska E., Slesak I.

Działalność Naukowa PAN. Wybrane Zagadnienia

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1999

|

tom 07

168-169

11

Adaptation of rubisco to crassulacean acid metabolism (CAM)

51%

Gruca M., Krupinska K., Niewiadomska E.

Acta Biologica Cracoviensia. Series Botanica. Supplement

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2009

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tom 51

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nr 2

12

Epidemiology of sarcoidosis recorded in 2006-2010 in the Silesian voivodeship on the basis of routine medical reporting

51%

Kowalska M., Niewiadomska E., Zejda J. E.

Annals of Agricultural and Environmental Medicine

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2014

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tom 21

|

nr 1

13

Does senescence correlate with oxidative damage in tobacco leaves?

51%

Pilarska M., Krupinska K., Niewiadomska E.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

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2013

|

tom 94

|

nr 2

14

The engagement of mitochondria in the metabolic and energetic transition from C3 to CAM

51%

Gawronska K., Romanowska E., Niewiadomska E.

Biological Letters

|

2005

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tom 42

|

nr 2 Spec.Vol.

15

Chromatographic properties of the cadmium induced SOD isoform in Rhizopogon roseolus

51%

Miszalski Z., Niewiadomska E., Skoczowski A., Botton B.

Acta Physiologiae Plantarum

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1998

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tom 20

|

nr 3

Exposure of Rhizopogon roseolus mycelia to 15 mmol·dm⁻³ cadmium for 24 h induces a different pattern of Mn-SOD on polyacrylamide gels, probably being a changed form of an originally existing one. The presence of cadmium affects the chromatographic properties of this enzyme and its mobility through the acrylamide gel. This new isoform was purified using DEAE Trisacryl chromatography. Cadmium induced isoform adsorbed stronger to the ligands and was eluated with a Tris-HCl buffer containing 0.1 mol·dm⁻³ NaCl. SOD from control samples (not treated with cadmium) was eluated with the same buffer without NaCl.

16

Cadmium influence on membrane permeability in Acer pseudoplatanus L. callus cultures

51%

Filek M., Niewiadomska E., Pilipowicz M., Miszalski Z.

Biological Bulletin of Poznań. Supplement

|

1996

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tom 33

17

Photorespiration and regulation of catalase activity in leaves of C3-CAM intermediate plant Mesembryanthemum crystallinum L.

51%

Niewiadomska E., Haag-Kerwer A., Miszalski Z., Ratajczak R.

Polish Journal of Natural Sciences. Supplement

|

2003

|

tom 01

18

Oxidative events during in vitro regeneration of sunflower

45%

Konieczny R., Libik M., Tuleja M., Niewiadomska E., Miszalski Z.

Acta Physiologiae Plantarum

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2008

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tom 30

|

nr 1

The changes in the activity of some antioxidant enzymes and endogenous H2O2 level in zygotic sunflower embryos during organogenesis and somatic embryogenesis were monitored. Pathways of regeneration were induced on media differing with sucrose concentration 87 mmol dm3 for shoot [shoot induction medium (SIM) medium] and 350 mmol dm3 [embryo induction medium (EIM) medium] for somatic embryo induction. Water potential of the explants cultured on SIM increased, while the embryos maintained on EIM showed middle water deficit stress. The pattern of superoxide dismutase (SOD) isoforms was similar in organogenic and embryogenic culture; however, the intensity of MnSOD bands was higher on SIM than on EIM. Differences in catalase activity were observed: high activity on SIM predominated, whereas on EIM it was reduced. The activity of guaiacol peroxidase in the explantsproducing shoots and somatic embryos differed at the beginning of culture, but became comparable at the time of shoot and somatic embryo formation (day 5). H2O2 content was unchanged in organogenic culture, but on EIM it increased on day 1 followed by significant decrease. The results indicate that sugar concentration per se, or via induction of different developmental pathways influences the activity of antioxidant enzymes and also H2O2 level in cultured sunflower embryos.

19

Evaluation of phenolic content in selected red fruit juices

45%

Niec-Lesniak J., Szczepanska E., Bialek-Dratwa A., Kiciak A., Niewiadomska E.

Roczniki Państwowego Zakładu Higieny

|

2024

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tom 75

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nr 2

Background. Red fruits are characterised by a particularly high content of bioactive compounds, e.g. anthocyanins, tannins, pectins, vitamins and minerals. Dietary supply of proper amounts of antioxidants is essential to reduce oxidative stress, and thus is an important element in the prevention of lifestyle diseases. Objective. The aim of the study was to evaluate and compare the content of polyphenols in selected red fruit juices (chokeberry, elderberry, pomegranate, cranberry), as well as to assess the impact of storage time on the content of these compounds in the analysed samples. Material and methods. The research material consisted of 17 juices (100%): 3 chokeberry juices, 4 elderberry juices, 5 pomegranate juices and 5 cranberry juices, which differed in terms of the manufacturer, type, price range, country of origin and production method. The total polyphenol content was measured by spectrophotometry using the Folin- Ciocalteu reagent. The procedure was based on a modified method described by Waterhouse. Active acidity (pH) was measured with the potentiometric method using a pH-meter and the sucrose content was measured using a refractometer. Results. The highest mean content of polyphenolic compounds was found in chokeberry and elderberry juices. Juice storage time did not reduce the mean content of polyphenolic compounds. The highest sucrose content was found in chokeberry juices and the lowest in cranberry juice. Conclusions. Chokeberry and elderberry juices had the highest content of polyphenols among the tested products. Juices stored after opening in accordance with the manufacturer’s instructions (at 4°C) do not lose their nutritional properties.

20

Effect of high temperature treatment of Vicia faba roots on the oxidative stress enzymes in leaves

45%

Filek M., Baczek R., Niewiadomska E., Pilipowicz M., Koscielniak J.

Acta Biochimica Polonica

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1997

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tom 44

|

nr 2

The following types of superoxide dismutase (SOD) have been found in the leaves of Vicia faba: one isoenzyme of Mn-SOD and four isoenzymes of Cu/Zn-SOD. The treatments of roots with boiling water caused an increase of SOD activity in the leaves. The highest increase was measured after 5 s of the treatment. It was accompanied by a significant increase in catalase activity. Analysis of cell fractions' revealed an increase of SOD activity in the plastids and mitochondria isolated from the leaves of those plants whose roots were heat-treated. However, there was no distinct change of SOD activity in the cytosolic fraction. The possibility of an electric wave intervention inducing oxidative stress in the leaves is discussed.

Ograniczanie wyników

Effects of tocopherol deficiency on photosynthetic electron transport under low light

Participation of citric acid and isocitric acid in the diurnal cycle of carboxylation and decarboxylation in the common ice plant

Determination of some oxidative stress parameters in variegated leaves of Chlorophytum comosum [Thunb] Bak

The effect of Fd-NADP oxido-reductase on oxidation of SO2

Zmiany aktywnosci katalazy i dysmutazy anionorodnika ponadtlenkowego w lisciach Mesembryanthemum crystallinum L.

Phytotron chambers for plant exposure to ozone

Effect of different levels of air pollution on photosynthetic activity of some lichens

Whether ferredoxin-dependent cyclic electron transport (CET) limits ROS production in Thelungiella salsuginea?

Czy rosliny gorskie przezywaja stres?

Mozliwosci wykorzystania halofitow w praktyce

Adaptation of rubisco to crassulacean acid metabolism (CAM)

Epidemiology of sarcoidosis recorded in 2006-2010 in the Silesian voivodeship on the basis of routine medical reporting

Does senescence correlate with oxidative damage in tobacco leaves?

The engagement of mitochondria in the metabolic and energetic transition from C3 to CAM

Chromatographic properties of the cadmium induced SOD isoform in Rhizopogon roseolus

Cadmium influence on membrane permeability in Acer pseudoplatanus L. callus cultures

Photorespiration and regulation of catalase activity in leaves of C3-CAM intermediate plant Mesembryanthemum crystallinum L.

Oxidative events during in vitro regeneration of sunflower

Evaluation of phenolic content in selected red fruit juices

Effect of high temperature treatment of Vicia faba roots on the oxidative stress enzymes in leaves