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Wyszukujesz frazę "metal stress" wg kryterium: Temat


Tytuł:
Tough sprouting - impact of cadmium on physiological state and germination rate of soybean seeds
Autorzy:
Chmielowska-Bak, J.
Holubek, R.
Frontasyeva, M.
Zinicovscala, I.
Isidogru, S.
Deckert, J.
Powiązania:
https://bibliotekanauki.pl/articles/2130694.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
metal stress
antioxidants
cell viability
lipid peroxidation
Opis:
Seed germination is the earliest process in plant development and is crucial for further plant growth and fitness. The process is regulated by various internal and external factors, including soil pollutants such as nonessential metals. In the present study, we examined in detail the impact of short-term imbibition in Cd solutions at several concentrations (5, 10, and 25 mg/L) on germination rate and physiological state of soybean seeds. The results showed that although Cd was readily absorbed by the seeds, the metal had no effect on seeds cell viability, oxidative stress intensity, or germination percentage. In contrast, imbibition in Cd solution led to slight reduction in antioxidant capacity of seeds. Seedlings grown from seeds pretreated with metal showed no differences in growth in relation to the control. Taken together, the results indicate that soybean seeds are relatively tolerant even to high Cd concentration (up to 25 mg/L).
Źródło:
Acta Societatis Botanicorum Poloniae; 2020, 89, 2
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mercury induced oxidative stress of antioxidants in Clitoria ternatea L.
Autorzy:
Priya, M.
Balakrishnan, V.
Kiruthika Lakshmi, A.
Aruna, R.
Ravindran, K.C.
Powiązania:
https://bibliotekanauki.pl/articles/10952.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
biofertilizer
enzyme
mercury
metal stress
oxidative stress
antioxidant
Clitoria ternatea
Opis:
Biofertilizers are the special formulation of specific beneficial microorganisms that promote the growth of plant crops by converting the unavailable form of nutrients into available form. Here, the effect of heavy metal stress on antioxidant enzymes were studied in Clitoria ternatea L. leaves. Clitoria ternatea L. plant was grown for 30 days and the heavy metal mercuric chloride was sprayed after 10 days from the date of planting. Effect of mercuric chloride was observed in treated plants. The selected plant Clitoria ternatea L. was grown under mercuric chloride treatment in a specified concentration 1 μg/10 ml. The control plant maintained without the treatment of mercuric chloride. Antioxidant effect of mercuric chloride was measured under controlled and treated conditions. The selected plant Clitoria ternatea L. was grown under mercuric chloride in treatment. Further it increases H2O2 content and the antioxidant enzyme activities such as superoxide dismutase (SOD), catalase (CAT), and peroxidase (POD) were observed in mercuric chloride treated plants when compared with control. Here mercuric chloride was accumulated more in matured leaves. The results are discussed with the literature.
Źródło:
International Letters of Natural Sciences; 2014, 18
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chromatin immunoprecipitation — new approach for revealing histone modifications in plants under heavy metal stress — theoretical review on advantages, drawbacks and questions
Autorzy:
Kwaśniewski, P.
Powiązania:
https://bibliotekanauki.pl/articles/115479.pdf
Data publikacji:
2010
Wydawca:
Fundacja na Rzecz Młodych Naukowców
Tematy:
chromatin dynamics
heavy metal stress
ecophysiology
ChIP
immunoprecipitation
histone modifications
epigenetic
Opis:
Heavy metal contamination is a major environmental problem. A coordinated network of molecular processes participates in plant response to heavy metals. The metal-dependent gene expression is regulated on multiple levels and may include chromatin modifi cations. One of the methods which allows to understand the role of histone post-translational modifi cations in plant cell response to heavy metals may be chromatin immunoprecipitation.
Źródło:
Challenges of Modern Technology; 2010, 1, 1; 7-10
2082-2863
2353-4419
Pojawia się w:
Challenges of Modern Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methyl jasmonate - a multifunctional molecule throughout the whole plant life
Autorzy:
Hanaka, A.
Nuzyńska-Wierdak, R.
Powiązania:
https://bibliotekanauki.pl/articles/12265992.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
plant cultivation
methyl jasmonate
phytohormone
growth regulator
plant development regulator
biotic stress
chilling stress
heavy metal stress
Opis:
Methyl jasmonate (MJ) is a widely occurring molecule. Since it is synthesized constitutively, its presence is substantial to plant normal growth and development. Moreover, its elevated concentration detected under abiotic and biotic stress conditions seems to be crucial to plant in reacting to adverse events and its ability to survive. Because of the sophisticated biochemical machinery inside the plant body, MJ, among other molecules, helps the plant to adopt to the surrounding environmental changes and is involved in its defense system.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 2; 237-249
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The role of miRNAs upon metal stress in Arabidopsis thaliana
Autorzy:
Gielen, H.
Remans, T.
Vangronsveli, J.
Cuypers, A.
Powiązania:
https://bibliotekanauki.pl/articles/80906.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
conference
microRNA
metal stress
plant
Arabidopsis thaliana
reactive oxygen species
gene expression
oxidative stress
signal transduction
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 2
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The role of the oxidative signal-inducible kinase (OXI1) in metal-induced molecular responses in Arabidopsis thaliana
Autorzy:
Cuypers, A.
Smeets, K.
Kelly, O.
Hirt, H.
Vangronsveld, J.
Powiązania:
https://bibliotekanauki.pl/articles/80648.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
conference
mitogen-activated protein kinase
metal stress
cadmium
copper
reactive oxygen species
oxidative signal-inducible kinase
hydrogen peroxide
lipid peroxidation
Arabidopsis thaliana
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 2
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The role of metal ions in biological oxidation - the past and the present
Autorzy:
Kleczkowski, M.
Garncarz, M.
Powiązania:
https://bibliotekanauki.pl/articles/30753.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
metal ion
oxidative stress
biological oxidation
prooxidant
antioxidant
pathological process
Opis:
Two theories, one based on the metabolism of inorganic substances, the other on metabolism of organic substances, have played an important role in the explanation of the origin of life. They demonstrate that the original environment of life on Earth was seawater containing micronutrients with structural, metabolic and catalytic activity. It is assumed that the first primitive organisms lived around 3.8 billion years ago and it was also then that the first catalytic reaction involving metal ions occurred. Biological oxidation leading to oxidative stress and cell damage in animals represents one of these types of reactions which are responsible for many animal diseases. The role of prooxidative and antioxidative actions of transition metal ions as well as their neuropathological consequences have therefore been the topic for many research projects. There is hope that metal chelates and antioxidants might prove to be a modern mode of therapy for i.e. neurogenerative diseases. The aim of this review is to show the evolution of scientific knowledge on metal ions, their biological oxidation, and an overview of their role in physiology and in pathological processes.
Źródło:
Polish Journal of Veterinary Sciences; 2012, 15, 1
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigations of metal gaskets for high-pressure joints
Autorzy:
Trojnacki, A.
Krasiński, M.
Szybiński, B.
Powiązania:
https://bibliotekanauki.pl/articles/244507.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
high-pressure closures
metal gaskets
stress-strain analysis
leak tightness
FEM
Opis:
The article deals with the stress-strain analysis and investigations of operating properties of metal high-pressure gaskets. The simplified analytical approach is applied in the examinations of wave-ring gasket and lens-ring gasket. A cylindrical shell of constant mean thickness is introduced to simulate the gaskets. It is assumed that the shell is simply supported at the inner surfaces of the gasket seats. The influence of certain geometric, material and assembly parameters on the strength and leak-tightness of the closures is analytically investigated. Certain selected parameters of the closure are examined versus applied operating pressure for the assumed materials of the gasketed members and fixed several another data of the gaskets. The analysis is carried out in dimensionless variables in order to generalize the results. The region of admissible solutions for the gaskets parameters such as dimensions, applied assembly requirements and operating pressure is determined. The static tensile tests were carried out to determine the real mechanical properties of materials applied for the gaskets and the seats. The analytical solutions are verified by FEM calculations, which take into account the hardening of the material, friction at the surfaces and contact effects. Theoretical considerations are illustrated by numerical examples and compared with the experimental results obtained under assembly conditions with no operating pressure applied to the closures. Some conclusions may be recommended in design procedures of the high-pressure closures with metal gaskets.
Źródło:
Journal of KONES; 2016, 23, 1; 397-404
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Lipid peroxidation in plant cells, its physiological role and changes under heavy metal stress
Autorzy:
Skorzynska-Polit, E
Powiązania:
https://bibliotekanauki.pl/articles/57427.pdf
Data publikacji:
2007
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
plant physiology
lipoxygenase
plant cell
plant stress
lipid peroxidation
heavy metal
Opis:
Lipid peroxidation, which is a natural and essential process, can occur in a non-enzymatic and/or enzymatic way in plant cells. Some of its products have cytotoxic effects on cells, but others function as plant effectors. The lipid peroxidation in plants exposed to heavy metal stress depends on the metal, plant organ, plant species and its genotype.
Źródło:
Acta Societatis Botanicorum Poloniae; 2007, 76, 1
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical and experimental analysis of residual stresses induced in metal coatings thermally deposited (HVOF) on AL₂O₃ substrates
Autorzy:
Zimmerman, J.
Powiązania:
https://bibliotekanauki.pl/articles/279669.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
metal coatings
AL₂O₃ substrate
thermal spraying
FEM simulation
residual stress
Opis:
The study is concerned with the modeling of residual stresses in thin coatings thermally deposited with a high speed on a substrate. The modeling includes two stages: solution of the particle-target impact problem using FEM and simulation of the spraying process with the use of a thermo-mechanical model in which the coating has been built layer-by-layer. The samples used in the calculations are comprised of Ti, Cu, and Ni coatings deposited on Al2O3 substrate by the HVOF method. The numerical model is verified experimentally by measuring the deflections of the samples after spraying, and measuring the stresses using the XRD method.
Źródło:
Journal of Theoretical and Applied Mechanics; 2016, 54, 3; 921-933
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł

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