Wyniki wyszukiwania

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Rola dehydrogenazy glutaminianowej w metabolizmie roslin motylkowych

100%

Lehmann T.

Seria Biologiczna. Uniwersytet im. Adama Mickiewicza w Poznaniu

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2009

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nr 77

1-113

2

Glutamine dehydrogenase isoenzymes in yellow lupine root nodules. III. Affinity for ammonia

51%

Lehmann T., Polcyn W., Ratajczak L.

Acta Physiologiae Plantarum

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1990

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tom 12

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nr 3

3

The influence of the carbohydrate nutrition on the respratory activity of the embryonic axes of Pisum sativum cultured in vitro

51%

Morkunas I., Lehmann T., Ratajczak W., Ratajczak I.

Acta Physiologiae Plantarum

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1998

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tom 20

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nr 3 suppl.

4

Changes in glutamate dehydrogenase (GDH) activity in lupine as response to heavy metals and sucrose starvation

51%

Lehmann T., Kramarska P., Smolag J., Ratajczak L.

Acta Physiologiae Plantarum

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2001

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tom 23

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nr 3 suppl.

5

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Zmiany aktywności dehydrogenazy glutaminianowej (GDH) w odpowiedzi na głodzenie węglowodanowe i obecność metali ciężkich

51%

Lehmann T., Kramarska P., Smolag J., Ratajczak L.

Zeszyty Problemowe Postępów Nauk Rolniczych

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2002

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tom 481

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nr 2

Celem pracy było porównanie wpływu cukru i metali ciężkich (kadmu i ołowiu) na aktywność oraz spektrum form molekularnych dehydrogenazy glutaminianowej (GDH). Doświadczenia przeprowadzono na izolowanych osiach zarodkowych łubinu żółtego, rosnących w kulturze in vitro (48 godz.). Stosowano dwa warianty hodowlane: pożywka Heller'a z sacharozą (tzw. „osie odżywione") i pożywka Heller'a bez sacharozy (tzw „osie głodzone). Oba warianty traktowano jonami kadmu i ołowiu. Oznaczenia aktywności NADH-GDH (aminacyjnej) i NAD-GDH (dezaminacyjnej) wykazały, że cukier wyraźnie hamuje aktywność enzymu w stosunku do wariantu głodzonego. Potraktowanie osi jonami zarówno kadmu, jak i ołowiu indukowało w osiach odżywionych głównie aktywność NADH-GDH, zaś w osiach głodzonych wzrastała aktywność NAD-GDH. Analizy elektroforetyczne wykazały, ż w obecności cukru następowała redukcja spektrum izoenzymatycznego GDH z ok. 22 form (osie głodzone) do ok. 14 from (osie odżywione). Izoenzymy te były indukowane ponownie w osiach odżywionych po dodaniu do pożywki kadmu lub ołowiu. W osiach głodzonych efektem obu metali były zmiany w intensywności wybarwienia poszczególnych izoenzymow. Uzyskane wyniki omawiane są w oparciu o mechanizm represji katabolicznej powodowanej przez cukier.

6

Preliminary characteristics of enzyme activity of the primary nitrogen assimilation in mutated chlorate-resistant cell lines of Solanum tuberosum L.

51%

Chwialkowska B., Lehmann T., Ratajczak L.

Genetica Polonica

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1989

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tom 30

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nr 3-4

7

Effect of suboptimal nutrient conditions on nitrogen, photosynthetic and symbiotic status of mycorrhized maize

51%

Paluch E., Polcyn W., Lehmann T., Scierzynska M.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

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2013

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tom 94

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nr 3

8

Putrescine catabolism via DAO contributes to proline and GABA accumulation in roots of lupine seedlings growing under salt stress

51%

Legocka J., Sobieszczuk-Nowicka E., Ludwicki D., Lehmann T.

Acta Societatis Botanicorum Poloniae

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2017

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tom 86

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nr 3

The levels of polyamines (PAs), proline (Pro), and γ-aminobutyric acid (GABA) as well as the activity of diamine oxidase (DAO; EC 1.4.3.6) were studied in the roots of 2-day-old lupine (Lupinus luteus L. ‘Juno’) seedlings treated with 200 mM NaCl for 24 h. The effect of adding 1 mM aminoguanidine (AG), an inhibitor of DAO activity, was also analyzed. It was found that in roots of lupine seedlings growing under salt stress, a negative correlation between Pro accumulation and putrescine (Put) content takes place. Pro level increased in roots by about 160% and, at the same time, Put content decreased by about 60%, as a result of ca. twofold increase of DAO activity. The AG added to the seedlings almost totally inhibited the activity of DAO, increased Put accumulation to control level, decreased Pro content by about 25%, and reduced GABA level by about 22%. Addition of 50 mM GABA to the lupine seedlings growing in the presence of AG and NaCl restored Pro content in roots to its level in NaCl-treated plants. In this research, the clear correlation between Put degradation and GABA and Pro accumulation was shown for the first time in the roots of seedlings growing under salt stress. This could be considered as a short-term response of a plant to high salt concentration. Our findings indicate that during intensive Pro accumulation in roots induced by salt stress, the pool of this amino acid is indirectly supported by GABA production as a result of Put degradation.

9

The influence of nitrogen source on the activity of nitrogen-assimilating enzymes in chlorate-resistant cell lines of Solanum tuberosum L.

51%

Chwilkowska B., Lehmann T., Ratajczak L.

Genetica Polonica

|

1990

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tom 31

|

nr 1

10

Immunochemical comparison of the glutamate dehydrogenase isoenzymes in yellow lupin root nodules

51%

Ratajczak L., Prus-Glowacki W., Ratajczak W., Lehmann T.

Acta Biochimica Polonica

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1989

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tom 36

|

nr 3-4

11

Regulation of glutamate dehydrogenase (GDH) activity in relation to carbon and nitrogen limitation in Lupinus albus

51%

Lehmann T., Ratajczak L., Ratajczak W.

Biological Bulletin of Poznań. Supplement

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1995

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tom 32

12

Glutamate dehydrogenase [GDH] genes in yellow lupine

51%

Lehmann T., Dabert M., Ratajczak L.

Polish Journal of Natural Sciences. Supplement

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2003

|

tom 01

13

Changes in the activity of phosphoenolpyruvate carboxylating enzymes in germinating yellow lupin seeds

51%

Ratajczak W., Polcyn W., Lehmann T., Ratajczak L.

Acta Physiologiae Plantarum

|

1998

|

tom 20

|

nr 2

The rate of phosphoenolpyruvate carboxylation by extracts from germinating lupin seeds was measured through the H¹⁴CO₃ fixation. PEP carboxylation in seed axes increased during their imbibition, mainly as a result of the increase in the activity of PEP carboxylase [EC 4.1.1.31]. However, the activity of PEP carboxykinase [EC 4.1.1.38], present during the first 3 hours of imbibition, as well as the activity of PEP-carboxykinase [EC 4.1.1.49], after 24 hours of imbibition, have also been shown. Possible physiological role of the changes in the activity of PEP carboxylases during lupin seeds germination is discussed.

14

Metabolism of amino acids in germinating yellow lupine seeds. I. The decomposition of 14 C-aspartate and 14 C-glutamate during the imbibition

51%

Ratajczak W., Lehmann T., Polcyn W., Ratajczak L.

Acta Physiologiae Plantarum

|

1996

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tom 18

|

nr 1

15

The modifying effect of sucrose on glutamate dehydrogenase [GDH] activity in lupine embryos treated with inhibitors of RNA and protein synthesis

51%

Lehmann T., Ratajczak L., Deckert J., Przybylska M.

Acta Physiologiae Plantarum

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2003

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tom 25

|

nr 4

16

Various asparagine synthesis pathways in germinating seeds and root nodules of yellow lupine

51%

Ratajczak L., Borek S., Lehmann T., Ratajczak W.

Biological Letters

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2005

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tom 42

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nr 2 Spec.Vol.

17

Anti-peptide specific antibodies for the characterization of different glutamate dehydrogenase subunits in yellow lupine

51%

Lehmann T., Dabert M., Ratajczak L.

Biological Letters

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2005

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tom 42

|

nr 2 Spec.Vol.

18

The induction of the alteration of glutamate dehydrogenase [GDH] izoenzymes by cycloheximide in sucrose starved lupine embryos

51%

Lehmann T., Deckert J., Ratajczak L., Przybylska M.

Cellular and Molecular Biology Letters

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2002

|

tom 07

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nr Suppl.

19

The involvement of glutamate dehydrogenase in the adaptation of mitochondria to oxidize glutamate in sucrose starved pea embryos

45%

Morkunas I., Lehmann T., Ratajczak W., Ratajczak L., Tomaszewska B.

Acta Physiologiae Plantarum

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2000

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tom 22

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nr 4

20

Metabolism of amino acids in germinating yellow lupin seeds. II. Pathway of conversion of aspartate to alanine during the imbibition

45%

Ratajczak W., Polcyn W., Lehmann T., Ratajczak L., Garnczarska M.

Acta Physiologiae Plantarum

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1998

|

tom 20

|

nr 2

The incorporation of ¹⁴C-aspartate during the imbibition of yellow lupin seeds resulted in the production of ¹⁴C-alanine and ¹⁴CO₂. On the basis of tracer and enzymatic assays, conducted in vitro on the extract obtained from lupin seeds, it is postulated that aspartate can be converted to oxaloacetate, then, by phosphoenolopyruvate and pyruvate to alanine. This pathway can be catalyzed by the following enzymes: aspartate aminotransferase, phosphoenolpyruvate carboxykinase, pyruvate kinase and alanine aminotransferase.

Ograniczanie wyników

Rola dehydrogenazy glutaminianowej w metabolizmie roslin motylkowych

Glutamine dehydrogenase isoenzymes in yellow lupine root nodules. III. Affinity for ammonia

The influence of the carbohydrate nutrition on the respratory activity of the embryonic axes of Pisum sativum cultured in vitro

Changes in glutamate dehydrogenase (GDH) activity in lupine as response to heavy metals and sucrose starvation

Zmiany aktywności dehydrogenazy glutaminianowej (GDH) w odpowiedzi na głodzenie węglowodanowe i obecność metali ciężkich

Preliminary characteristics of enzyme activity of the primary nitrogen assimilation in mutated chlorate-resistant cell lines of Solanum tuberosum L.

Effect of suboptimal nutrient conditions on nitrogen, photosynthetic and symbiotic status of mycorrhized maize

Putrescine catabolism via DAO contributes to proline and GABA accumulation in roots of lupine seedlings growing under salt stress

The influence of nitrogen source on the activity of nitrogen-assimilating enzymes in chlorate-resistant cell lines of Solanum tuberosum L.

Immunochemical comparison of the glutamate dehydrogenase isoenzymes in yellow lupin root nodules

Regulation of glutamate dehydrogenase (GDH) activity in relation to carbon and nitrogen limitation in Lupinus albus

Glutamate dehydrogenase [GDH] genes in yellow lupine

Changes in the activity of phosphoenolpyruvate carboxylating enzymes in germinating yellow lupin seeds

Metabolism of amino acids in germinating yellow lupine seeds. I. The decomposition of 14 C-aspartate and 14 C-glutamate during the imbibition

The modifying effect of sucrose on glutamate dehydrogenase [GDH] activity in lupine embryos treated with inhibitors of RNA and protein synthesis

Various asparagine synthesis pathways in germinating seeds and root nodules of yellow lupine

Anti-peptide specific antibodies for the characterization of different glutamate dehydrogenase subunits in yellow lupine

The induction of the alteration of glutamate dehydrogenase [GDH] izoenzymes by cycloheximide in sucrose starved lupine embryos

The involvement of glutamate dehydrogenase in the adaptation of mitochondria to oxidize glutamate in sucrose starved pea embryos

Metabolism of amino acids in germinating yellow lupin seeds. II. Pathway of conversion of aspartate to alanine during the imbibition