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1

Kinetin-induced changes in the population of translatable messenger RNA lacking a polyadenylated segment in cucumber cotyledons

100%
Legocka J.
Acta Physiologiae Plantarum
|
1987
|
tom 09
|
nr 1
2

KInetin-induced changes in the synthesis on nuclecic acids and proteins in cucmber cotyledons

100%
Legocka J.
Acta Physiologiae Plantarum
|
1989
|
tom 11
|
nr 1
3

Udzial kinetyny w regulacji ekspresji genow podczas wzrostu liscieni ogorka [Cucumis sativus L.]

100%
Legocka J.
Seria Biologiczna. Uniwersytet im. Adama Mickiewicza w Poznaniu
|
1992
|
tom 50
1-71
4

An Analysis of growth regulator interactions and gene expression during auxin-induced cell elongation

100%
Legocka J.
Biological Bulletin of Poznań. Supplement
|
1995
|
tom 32
5

The role of cytokinins in the development and metabolism of barley leaves. VIII. Effect of light and kinetin on the synthesis of cytoplasmic and plastid ribosomal RNA in etiolated leaves

100%
Legocka J.
Acta Physiologiae Plantarum
|
1993
|
tom 15
|
nr 1
6

Nowe podejscia w badaniach nad rola poliamin w komorce roslinnej

63%
Sobieszczuk-Nowicka E., Legocka J.
Postępy Biologii Komórki
|
2007
|
tom 34
|
nr 3
527-540
7
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Calcium variously mediates the effect of cytokinin on chlorophyll and LHCPII accumulation during greening in barley leaves and cucumber cotyledons

63%
Legocka J., Sobieszczuk-Nowicka E.
Acta Biologica Cracoviensia. Series Botanica
|
2014
|
tom 56
|
nr 2
8

Poliaminy w chloroplastach

63%
Legocka J., Sobieszczuk-Nowicka E.
Postępy Biologii Komórki
|
2004
|
tom 31
|
nr 1
143-153
9

Sorbitol and NaCl stresses free, microsome-associated and thylakoid-associated polyamine content in Zea mays and Phaseolus vulgaris

63%
Legocka J., Sobieszczuk-Nowicka E.
Acta Physiologiae Plantarum
|
2012
|
tom 34
|
nr 3
Most of commercially important crops, including maize and common bean, are sensitive to water deficit and salinity. Polyamines are considered to be osmotic and salt tolerance modulators and biochemical indicators of these stresses. In the present study, we measured organ-specific changes in levels of free, microsome- and thylakoid-associated polyamines in leaves and roots of maize and common bean plants exposed for 24 h to osmotic and saline stresses. Putrescine levels were generally higher in the studied organs of both species and under both stresses; only in the roots of salt-treated bean it considerably decreased. In both species, salt stress (200 mM NaCl) induced a significant decrease in free spermidine in roots.Weobserved a significant decrease in the contents of all polyamines associated with themicrosomes isolated from the roots of maize and bean growing in sorbitol and salt conditions. Also the microsomes isolated from the leaves of stressed plants were characterized by the lower contents of polyamines. Our data showed a reduction of putrescine content, with significantly decreased spermidine and spermine levels in thylakoids isolated from the chloroplasts of maize and bean plants growing under both stresses. The results indicate that the studied maize and bean cultivars are rather drought-sensitive. Additionally, microsome- and thylakoid-associated polyamines seem to be good markers of plant stress tolerance.
10

Role of polyamines in the cytokinin-dependent physiological processes. II. Modulation of polyamine levels during cytokinin-stimulated expansion of cucumber cotyledons

63%
Legocka J., Zarnowska A.
Acta Physiologiae Plantarum
|
2000
|
tom 22
|
nr 4
11

Effect of cytokinins on the changes of the polyamines level in the culture of protonema of Ceratodon purpureus

63%
Zarnowska A., Legocka J.
Acta Physiologiae Plantarum
|
1997
|
tom 19
|
nr 2
12

Role of spermidine in the stabilization of the apoprotein of the light-harvesting chlorophyll a-b-protein complex of photosystem II during leaf senescence process

63%
Legocka J., Zajchert I.
Acta Physiologiae Plantarum
|
1999
|
tom 21
|
nr 2
Barley leaf discs maintained in dark accumulated a massive amount of putrescine (Put), lost chlorophyll and senescenced rapidly. At the same time RNase activity increased significantly. Exogenous spermidine (Spd) inhibited RNase activity, the loss of chlorophyll and degradation of the proteins from thylakoid membranes. Using SDS-PAGE and immunoblot analysis it was shown that spermidine was effective in the retardation of the loss of LHCPII observed in water-treated detached leaves. Analysis of PSII particles isolated from leaf fragments floated in water in the dark revealed the presence of Put, Spd and Spm. In spermidine treated leaves the level of this polyamine in photosystem II was above 5-fold higher than in control. The experimental findings obtained in this study provide evidence that applied spermidine interacts directly with thylakoid membranes so that they become more stable to degradation during senescence.
13

Role of polyamines in cytokinin-dependent physiological processes. III. Changes in polyamine levels during cytokinin-induced formation of gametophore buds in Ceratodon purpureus

63%
Legocka J., Zarnowska A.
Acta Physiologiae Plantarum
|
2002
|
tom 24
|
nr 3
14

Role of polyamines in cytokinin-regulated physiological processes

63%
Legocka J., Zarnowska A.
Polish Journal of Natural Sciences. Supplement
|
2003
|
tom 01
15

Role of polyamines in the cytokinin-dependent physiological processes. I. Effect of benzyladenine on polyamine levels during chloroplast differentiation in the tissue culture of Dianthus caryophyllus

63%
Legocka J., Zarnowska A.
Acta Physiologiae Plantarum
|
1999
|
tom 21
|
nr 4
16

Kinetin affects the level of chloroplast polyamines and transglutaminase activity during senescence of barley leaves

51%
Sobieszczuk-Nowicka E., Wieczorek P., Legocka J.
Acta Biochimica Polonica
|
2009
|
tom 56
|
nr 2
255-259
 We analysed the level of polyamines (PAs) bound to thylakoids and the level and activity of thylakoid transglutaminases throughout barley leaf senescence, retarded by kinetin. The level of PAs bound to thylakoids changed in senescing barley leaves: bound putrescine (PU) and spermidine (SD) increased throughout senescence, whereas bound spermine (SM) decreased. Kinetin diminished the increase in thylakoid-bound PU and SD and almost completely abolished the decrease of the bound SM. These data suggest different roles of PU/SD and SM in thylakoid degradation. Immunodetection of transglutaminases (TGase) in thylakoid fraction revealed three bands of 33, 58 and 78 kDa. During senescence the intensity of all bands increased and it was correlated with an increase in TGase activity. Kinetin down-regulated the accumulation of the 58- and 78-kDa TGases and the TGase activity. We postulate that formation of covalent bonds between PAs and proteins by TGase is involved in chloroplast senescence. The kinetin-mediated preservation of low TGase levels and activity throughout leaf senescence may represent an important component of the mechanism of kinetin action in the retardation of leaf senescence.
17

Roslinne transglutaminazy

51%
Sobieszczuk-Nowicka E., Solinska M., Legocka J.
Postępy Biologii Komórki
|
2005
|
tom 32
|
nr 3
463-476
18

Cytokinin-mediated mucleic acid synthesis in the tissue culture of Diathus caryophylius

51%
Legocka J., Su L. D., Schneider J.
Acta Physiologiae Plantarum
|
1990
|
tom 12
|
nr 2
19

Transglutaminazy i ich biologiczne funkcje

51%
Samelak A., Sobieszczuk-Nowicka E., Legocka J.
Postępy Biologii Komórki
|
2010
|
tom 37
|
nr 3
599-612
20

The role of cytokinins in the development and metabolism of barley leaves I. The effect of cytokinins on leaf senescence

51%
Wozny A., Legocka J., Szweykowska A.
Acta Societatis Botanicorum Poloniae
|
1977
|
tom 46
|
nr 2
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