| Leader of the project: A. Šrobárová |
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Research team: J. Pavlovkin
Duration of the project: 2006 - 2008
Grant Agency: VEGA 2/6056/26
The species of Fusarium beside pathogenic effect produce a wide range of secondary metabolites in seeds of cereals and maize. The excellent knowledge of their life cycle and mechanisms of action may be a very important base for their control. During our previous project we proved the role of toxins, their privilege in pathogenesis when several toxins are produced in plant. Now, we continue in study:
- Which is the role of entomotoxic beuvericin ("the role of programmed cell dead") in plant and the last isolated fusaproliferin (elektron microscopic) in plant?
- The role of plasmatic membrane in root of maize of susceptibility cultivar (Pavla) and resistance one (Lucia) in pathogenesis by using electrophysiological method. By the help of micro electrophysiological technic we study that process and we approved the limiting toxin concentration for its action.
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Participation of endomembranes and components of cell wall on the maintenance of plant cell polarity |
| Leader of the project: M. Ovečka |
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Research team: M. Čiamporová, F. Baluška, M. Nadubinská, P. Illéš, H. Vargová
Duration of the project: 2005 - 2007
Grant Agency: VEGA 2/5085/5
Internal cell polarity represents leading factor determining further developmental program in root cells and tip-growing root hairs. Although mechanism of tip growth has been studied thoroughly complex model is still not completed. In the study of tip growth regulation we address signalling basement and principle of protein complexes anchoring during root hair formation. The aim of the project is characterisation of growing tip, interaction of plasma membrane with the cell wall, distribution of sterols in the plasma membrane, cell wall pectins and endocytosis in different stages of root hair formation, in control and under selected stress environmental factors. Results should contribute to understanding of components (cell wall, plasma membrane and signalling) determining tip growth of root hairs and polarity of plant cells.
| Leader of the project: M. Čiamporová |
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Research team: V. Banásová, P. Illéš, M. Nadubinská, M. Ovečka, H. Vargová,
J. Krištín (Fac. Nat. Sci., Comenius Univ. Bratislava)
Duration of the project: 2005 - 2007
Grant Agency: VEGA 2/5086/5
Recent state of populations and plant communities in selected localities contaminated with heavy metals in Slovakia and Austria will be characterized. The project combines diverse approaches to the study of heavy metal tolerance in wild plants growing in their natural habitats with contaminated soil. The floristic composition and structure of plant communities with “normal” or toxic concentrations of heavy metals (Zn, Pb, Cu, Cd) were compared in three former mining regions in Slovakia. Differences in number and composition of plant species, in the portion of lichens (some of them being rare and threatened), and mosses, depended on the occurrence and amount of the metals. Thlaspi caerulescens from these localities was confirmed as Zn and Cd hyperaccumulator (Banásová V. et al. Biologia, 61: 433-439, 2006; Banásová V., In: Lackovičová A. et al. (ends), Central European Lichens – diversity and threat. Mycotaxon, 2006, p. 205-218; Banásová V. et al. Int. J. Environment and Pollution, in press). Using specific fluorescent staining, the accumulation of Zn was detected in the vacuoles of live cells in T. caerulescens, and Arabidopsis halleri leaves.
