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Projects / Programmes source: ARIS

Fiziološke raziskave mikorize (Slovene)

Research activity

Code Science Field Subfield
1.03.04  Natural sciences and mathematics  Biology  Plant physiology 

Code Science Field
B310  Biomedical sciences  Physiology of vascular plants 
B230  Biomedical sciences  Microbiology, bacteriology, virology, mycology 
Keywords
Mycorrhiza, hormones, cytokinins, jasmonic acid, heavy metals, pollution, lead.
Evaluation (rules)
source: COBISS
Researchers (11)
no. Code Name and surname Research area Role Period No. of publicationsNo. of publications
1.  10582  PhD Ingrid Falnoga  Neurobiology  Researcher  2000 - 2001  345 
2.  11156  MSc Karin Gabrovšek  Biology  Researcher  2000 - 2001  48 
3.  17819  Vanda Golobinek    Researcher  1998 - 2001 
4.  04333  PhD Maja Kovač  Biotechnology  Researcher  1996 - 2001  204 
5.  20428  PhD Matevž Likar  Biology  Researcher  1996 - 2001  283 
6.  12013  PhD Marjana Regvar  Biology  Head  2000 - 2001  537 
7.  10741  PhD Romana Ružič  Metrology  Researcher  2000 - 2001  133 
8.  08945  PhD Borut Smodiš  Control and care of the environment  Researcher  2000 - 2001  496 
9.  14011  PhD Dominik Vodnik  Biology  Researcher  2000 - 2001  415 
10.  21623  PhD Katarina Vogel Mikuš  Biology  Researcher  1996 - 2001  616 
11.  10037  PhD Nives Vrbič Kugonič  Control and care of the environment  Researcher  1996 - 2001  387 
Organisations (4)
no. Code Research organisation City Registration number No. of publicationsNo. of publications
1.  0105  National Institute of Biology  Ljubljana  5055784  13,392 
2.  1007  Eurofins ERICo Slovenija Inštitut za ekološke raziskave d.o.o. (Slovene)  Velenje  5583055000  2,451 
3.  0106  Jožef Stefan Institute  Ljubljana  5051606000  91,384 
4.  0431  BION Institute  Ljubljana  5376041000  280 
Abstract
Mycorrhiza, a symbiotic association between fungi and roots of higher plants, is a significant factor in many ecosystems due to its physiological function and ubiquity. In this project the regulatory role of plant hormones, especially jasmonic acid (JA), in the development of ectomycorrhiza and arbuscular mycorrhiza was studied. In vitro experiments revealed differences in the response of mycorrhizal and parasitic fungi to exogenously applied JA, as shown by the mineral content, membrane fluidity and growth studies. Research on the fungus Pisolithus tinctorius gave interesting insights into JA metabolism. A regulatory role of JA in mycorrhizae development was confirmed in experiments with spruce seedlings where JA in optimal concentrations stimulated infection. Changes in seedling protein patterns were also established. Research on the role of cytokinins in mycorrhization confirmed the importance of these growth regulators in determining the species and ecotypic specificity of mycorrhizae. Interactions of mycorrhizal fungi, in particular ectomycorrhizal fungi, with heavy metals are another field of our research. Tolerance of fungi and response of inoculated mycorrhizal plants to Pb was the main focus. The possible role of cytokinins in Pb toxicity was also examined. Exogenously applied cytokinin decreased the Pb uptake in spruce seedling and influenced its distribution. Therefore, rhizosphere cytokinins, as from the mycelium of a mycorrhizal fungus, could significantly influence Pb transport, and consequently its toxicity in plants.
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