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Blue light-induced orientation movements of chloroplasts in higher plants: Recent progress in the study of their mechanisms

100%

Gabrys H.

nr 4

The effect of temperature and CO2 contraction on light-induced chloroplast movements in Tradesantia leaves

63%

Gabrys H. , Walczak T.

nr 1

Influence of sugars on phototropin 2 action

63%

Banas A. K. , Gabrys H.

Acta Physiologiae Plantarum

2004

tom 26

nr 3 suppl.

Rola układu aktomiozynowego w ruchach chloroplastów indukowanych światłem niebieskim

63%

Krzeszowiec W. , Gabrys H.

nr 2

Wapn jako wtorny przekaznik w fotoindukowanych ruchach wewnatrzkomorkowych w komorce roslinnej

63%

Slesak I. , Gabrys H.

tom 2

75-85

Role of photosynthesis in the control of blue light-induced chloroplast movements. Inhibitor study

63%

Slesak I. , Gabrys H.

nr 2

Interplay between phosphoinositides and Ca2plus in phototropin1- and phototropin2-mediated chloroplast movements in Arabidopsis

51%

Aggarwal C. , Labuz J. , Gabrys H.

nr 3

Mannose, but not glucose or sucrose, disturbs actin cytoskeleton in Arabidopsis thaliana leaves

51%

Banas A. K. , Krzeszowiec W. , Dobrucki J. , Gabrys H.

nr 4

A dynamic cytoskeleton able to recognize and respond to both abiotic and biotic stimuli is necessary for the proper functioning of a living cell. The cytoskeleton is involved in cell growth and division, maintenance of cell shape, cytoplasmic streaming, and organelle movements. Numerous studies have focused on the relationships between sugar metabolism, sugar signaling, and the cytoskeleton in yeast and animal cells. Data on such connections in plants are scarce. In the present study we investigated the effects of exogenously delivered sugars on the plant actin cytoskeleton. Detached Arabidopsis thaliana leaves were incubated with sugars for 2 days and the cytoskeleton was visualized using fluorescent-labeled phalloidin. Glucose and sucrose did not influence the pattern of the actin cytoskeleton. In contrast, mannose caused the disappearance of filamentous structures and generated actin foci. The symptoms started to be visible after 24 h of the exposure to mannose. The effect did not occur in Nicotiana tabacum mesophyll cells. This insensitivity was probably due to the presence of phosphomannose isomerase in tobacco cells. Mannose is commonly used as a selection marker for the transformation of plants lacking the enzymes responsible for the metabolism of mannose-6-phosphate. Exposure to this hexose has been linked with DNA fragmentation and a release of cytochrome c from mitochondria. Both responses are treated as features of programmed cell death. However, in our experiments no DNA laddering was observed in mannose-treated Arabidopsis leaves.

Light-induced reorganization of gfb-labeled actin filaments in transgenic tobacco leaves

51%

Anielska-Mazur A. , Dobrucki J. , Timmers A. , Gabrys H.

Acta Physiologiae Plantarum

2004

tom 26

nr 3 suppl.

Exogenous amino acids affect the image of actin cytoskeleton in Arabidopsis mesophyll cells

51%

Guzdek J. , Gabrys H. , Krzeszowiec-Jelen W.

nr S2