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Start Over Author "Malinska K." Publication Type Academic Journals
5 results on '"Malinska K."'

3. Nitrate-regulated auxin transport by NRT1.1 defines a mechanism for nutrient sensing in plants.

Author

Krouk G, Lacombe B, Bielach A, Perrine-Walker F, Malinska K, Mounier E, Hoyerova K, Tillard P, Leon S, Ljung K, Zazimalova E, Benkova E, Nacry P, and Gojon A

Subjects
Animals, Arabidopsis growth & development, Biological Transport, Active physiology, Cells, Cultured, Chemoreceptor Cells metabolism, Female, Gene Expression Regulation, Plant physiology, Mutation genetics, Oocytes, Periplasmic Binding Proteins genetics, Plant Roots growth & development, Plant Roots metabolism, Signal Transduction physiology, Tumor Suppressor Proteins genetics, Xenopus, Arabidopsis metabolism, Food, Indoleacetic Acids metabolism, Nitrates metabolism, Periplasmic Binding Proteins metabolism, Tumor Suppressor Proteins metabolism
Abstract

Nitrate is both a nitrogen source for higher plants and a signal molecule regulating their development. In Arabidopsis, the NRT1.1 nitrate transporter is crucial for nitrate signaling governing root growth, and has been proposed to act as a nitrate sensor. However, the sensing mechanism is unknown. Herein we show that NRT1.1 not only transports nitrate but also facilitates uptake of the phytohormone auxin. Moreover, nitrate inhibits NRT1.1-dependent auxin uptake, suggesting that transduction of nitrate signal by NRT1.1 is associated with a modification of auxin transport. Among other effects, auxin stimulates lateral root development. Mutation of NRT1.1 enhances both auxin accumulation in lateral roots and growth of these roots at low, but not high, nitrate concentration. Thus, we propose that NRT1.1 represses lateral root growth at low nitrate availability by promoting basipetal auxin transport out of these roots. This defines a mechanism connecting nutrient and hormone signaling during organ development., (Copyright 2010 Elsevier Inc. All rights reserved.)

Published
2010
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4. [Smoking in the aspect of wholesome behaviors in adolescents].

Author

Malinska K, Steinborn B, and Ryll P

Subjects
Adolescent, Adolescent Behavior, Epilepsy psychology, Female, Headache psychology, Health Knowledge, Attitudes, Practice, Humans, Male, Health Behavior, Smoking psychology
Abstract

It has been compared behaviour of wholesome adolescents (14-17 years old) in this study, the healthy and suffering from epilepsy and headache. The IZZ and LKZ research methods have been used. The research group has been divided according to sex and age. It has been proved the greater escalation of health-oriented behaviour in patients, particularly girls.

Published
2007

5. Distribution of Can1p into stable domains reflects lateral protein segregation within the plasma membrane of living S. cerevisiae cells.

Author

Malinska K, Malinsky J, Opekarova M, and Tanner W

Subjects
Actins chemistry, Actins metabolism, Antineoplastic Agents pharmacology, Bridged Bicyclo Compounds, Heterocyclic pharmacology, Cell Wall metabolism, Chromosomes metabolism, Cloning, Molecular, Cytoskeleton metabolism, DNA metabolism, Detergents pharmacology, Genotype, Green Fluorescent Proteins metabolism, Immunoblotting, Marine Toxins pharmacology, Membrane Microdomains metabolism, Membrane Proteins chemistry, Nocodazole pharmacology, Nucleotide Transport Proteins metabolism, Octoxynol pharmacology, Plasmids metabolism, Protein Structure, Tertiary, Proton-Translocating ATPases chemistry, Saccharomyces cerevisiae Proteins chemistry, Thiazoles pharmacology, Thiazolidines, Time Factors, Amino Acid Transport Systems metabolism, Amino Acid Transport Systems, Basic metabolism, Cell Membrane metabolism, Fungal Proteins metabolism, Membrane Proteins biosynthesis, Saccharomyces cerevisiae metabolism, Saccharomyces cerevisiae Proteins biosynthesis, Saccharomyces cerevisiae Proteins metabolism
Abstract

Recently, lipid-raft-based subdomains within the plasma membrane of living Saccharomyces cerevisiae cells were visualized using green fluorescent protein fusions, and non-overlapping subdomains containing either Pma1p or Can1p were distinguished. In this study, the long-term stability of the subdomains was investigated. Experiments with latrunculin A and nocodazole ruled out the involvement of cytoskeletal components in the stabilization of the subdomains. Also a putative role of the cell wall was excluded, because protoplasting of the cells changed neither the pattern nor the stability of the subdomains. By contrast, the expected inner dynamics of the membrane subdomains was documented by FRAP experiments. Finally, two other proteins were localized within the frame of the Can1p/Pma1p plasma-membrane partition. We show that Fur4p (another H+ symporter) and Sur7p (a protein of unknown function) occupy the Can1p subdomain.

Published
2004
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