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Martin Bačkor - personal website
prof. RNDr. Martin Bačkor, DrSc. bio-eco monitoring

Martin Bačkor

Workplace: Institute of Biology and Ecology
Pavol Jozef Safarik University in Košice
Faculty of Science
Address: Mánesova 23, 040 01 Košice
Phone: +421 55 234-2302  |  VoIP
Room: 221(Ma23-NK) (.floor)
Email: martin.backor@upjs.sk

Slovak language



Recent publications:


Štork, F., Bačkor, M., Klejdus, B., Hedbavny, J., KováČik, J. (2013): Changes of metal-induced toxicity by H2O2/NO modulators in Scenedesmus quadricauda (Chlorophyceae).

Bačkor, M., Ivanova, V., Laatsch, H., Lokajová, V., Bačkorová, M. (2013): Allelopathic effects of lichen secondary metabolites on lichen photobiont Trebouxia erici.

Lackovicova, A., Guttova, A., Bačkor, M., Pisut, P., Pisut, I. (2013): Response of Evernia prunastri to urban environmental conditions in Central Europe after the decrease of air pollution.

Vantova, I., Bačkor, M., Klejdus, B., Backorova, M., Kovacik, J. (2013): Copper uptake and copper-induced physiological changes in the epiphytic lichen Evernia prunastri.


Fabriciova, G., Lopez-Tobarb, E., Cañamaresb, M. V., Bačkor, M., Sanchez-Cortesb, S. (2012): Adsorption of the anthraquinone drug parietin on silver nanoparticles: A SERS and fluorescence study.

Bačkorová, M., Jendželovský, R., Kello, M., Bačkor, M., Mikeš, J., Fedoročko, P. (2012): Lichen secondary metabolites are responsible for induction of apoptosis in HT-29 and A2780 human cancer cell lines.


Kováčik, J., Klejdus, B., Štork, F., Hedbavny, J., Bačkor, M. (2011): Comparison of methyl jasmonate and cadmium effect on selected physiological parameters in Scenedesmus quadricauda (Chlorophyta, Chlorophyceae).

Bačkor, M., Peli, E. R., Vantová, I. (2011): Copper tolerance in the macrolichens Cladonia furcata and Cladina arbuscula subsp mitis is constitutive rather than inducible.

Kováčik, J., Klejdus, B., Bačkor, M., Štork, F., Hedbavný, J. (2011): Physiological responses of root-less epiphytic plants to acid rain. Ecotoxicology.

Pawlik-Skowroñska, B., Bačkor, M. (2011): Zn/Pb-tolerant lichens with higher content of secondary metabolites produce less phytochelatins than specimens living in unpolluted habitats. Environ. Exp. Bot.

Piovár, J., Stavrou, E., Kaduková, J., Kimáková, T., Bačkor, M. (2011): Influence of long-term exposure to copper on lichen photobiont Trebouxia erici and free-living alga Scenedesmus quadricauda. Plant Growth Regul. 63: 81-88.

Bačkorová, M., Bačkor, M., Mikeš, J., Jendželovský, R., Fedoročko, P. (2011): Variable responses of different human cancer cells to the lichen compounds parietin, atranorin, usnic acid and gyrophoric acid. Toxicol. In Vitro 25: 37-44.

Pisani, T., Munzi, S., Paoli, L., Bačkor, M., Loppi, S. (2011): Physiological effects of arsenic in the lichen Xanthoria parietina (L.) Th. Fr.. Chemosphere 82: 963-969.

Pisani, T., Munzi, S., Paoli, L., Bačkor, M., Kováčik, J., Piovár, J., Loppi, S. (2011): Physiological effects of mercury in the lichens Cladonia arbuscula subsp. mitis (Sandst.) Ruoss and Peltigera rufescens (Weiss) Humb. Chemosphere 82: 1030-1037.


Ivanova, V., Bačkor, M., Dahse H.M., Graefe, U. (2010): Molecular structural studies of lichen substances with antimicrobial, antiproliferative and cytotoxic effects from Parmelia subrudecta. Prep. Biochem. Biotechnol. 40: 377-388.

Kováčik, J., Klejdus, B., Hedbavný, J., Bačkor, M. (2010): Tolerance of Silene vulgaris to copper: population-related comparison of selected physiological parameters. Environ. Toxicol. 25: 581-592.

Pöykkö, H., Bačkor, M., Bencúrová, E., Molčanová, V., Bačkorová, M., Hyvärinen, M. (2010): Host use of lichen-feeder - dealing with lichen secondary metabolites. Oecologia 164: 423-430.

Kováčik, J., Klejdus, B., Bačkor, M. (2010): Physiological responses of Scenedesmus quadricauda (Chlorophyceae) to UV-A and UV-C light. Photochem. Photobiol. B: Biol. 86: 612-616.

Bačkor, M., Peksa, O., Škaloud, P., Bačkorová, M. (2010): Photobiont diversity in lichens from metal-rich substrata based on ITS rDNA sequences. Ecotox. Environ. Safe. 73: 603-612.

Bačkor, M., Klemová, K., Bačkorová, M., Ivanova, V. (2010): Comparison of the phytotoxic effects of usnic acid on cultures of free-living alga Scenedesmus quadricauda and aposymbiotically grown lichen photobiont Trebouxia erici. J. Chem. Ecol. 36: 405-411.

Kováčik, J., Klejdus, B., Hedbavný, J., Bačkor, M. (2010): Effect of copper and salicylic acid on phenolic metabolites and free amino acids in Scenedesmus quadricauda (Chlorophyceae). Plant Sci. 178: 307-311.

Bačkor, M., Kováčik, J., Piovár, J., Pisani, T., Loppi, S. (2010): Physiological aspects of cadmium and nickel toxicity in the lichens Peltigera rufescens and Cladina arbuscula subsp. mitis. Water Air Soil Pollut. 207: 253-262.


Kováčik, J., Klejdus, B., Kaduková, J., Bačkor, M. (2009): Physiology of Matricaria chamomilla exposed to nickel excess. Ecotox. Environ. Safe. 72: 603-609.

Kováčik, J., Grúz, J., Bačkor, M., Strnad, M., Repčák, M. (2009): Salicylic acid-induced changes to growth and phenolic metabolism in Matricaria chamomilla plants. Plant Cell Rep. 28: 135-143.

Gál, P., Toporcer, T., Grendel, T., Vidová, Z., Smetana, K., Dvořánková, B., Gál, T., Mozeš, Š., Lenhardt, Ľ., Longauer, F., Sabol, M., Sabo, J., Bačkor, M. (2009): Effect of Atropa belladonna L. on skin wound healing: Biomechanical and histological study in rats and in vitro study in keratinocytes, 3T3 fibroblasts, and human umbilical vein endothelial cells. Wound Rep. Regen. 17: 378-386.

Kováčik, J., Klejdus, B., Bačkor, M. (2009): Nitric oxide signals ROS scavenger-mediated enhancement of PAL activity in nitrogen-deficient Matricaria chamomilla roots: side effects of scavengers. Free Radic. Biol. Med. 46: 1686-1693.

Bačkor, M., Kováčik, J., Dzubaj, A., Bačkorová, M. (2009): Physiological comparison of copper toxicity in the lichens Peltigera rufescens (Weis) Humb. and Cladina arbuscula subsp. mitis (Sandst.) Ruoss. Plant Growth Regul. 58:  279-286.

Kováčik, J., Klejdus, B., Hedbavny, J., Bačkor, M. (2009): Salicylic acid alleviates NaCl-induced changes in the metabolism of Matricaria chamomilla plants. Ecotoxicology 18: 544-554.

Kováčik, J., Klejdus, B., Hedbavny, J., Štork, F., Bačkor, M. (2009): Comparison of cadmium and copper effect on phenolic metabolism, mineral nutrients and stress-related parameters in Matricaria chamomilla plants. Plant Soil. 320: 231-242.

Bačkor, M., Loppi, S. (2009): Interactions of lichens with heavy metals. Biologia Plant. 53: 214-222.

Kováčik, J., Klejdus, B., Hedbavny, J., Bačkor, M. (2009): Nickel uptake and its effect on some nutrients levels, amino acid contents and oxidative status in Matricaria chamomilla plants. Water Air Soil Pollut. 202: 199-209.

Kováčik, J., Klejdus, B., Bačkor, M. (2009): Phenolic metabolism of Matricaria chamomilla plants exposed to nickel. J. Plant Physiol. 166: 1460-1464.

Munzi, S., Pisani, T., Paoli, L., Bačkor, M., Loppi, S. (2009): Physiological effects of a geothermal element: boron excess in the epiphytic lichen Xanthoria parietina (L.) Th. Fr.. Chemosphere 76: 921-926.

Bačkor, M., Klejdus, B., Vantová I., Kováčik J. (2009): Physiological adaptations in the lichens Peltigera rufescens and Cladina arbuscula var. mitis, and the moss Racomitrium lanuginosum to copper-rich substrate. Chemosphere 76: 1340-1343.


Kováčik, M., Grúz, J., Bačkor, M., Tomko, J., Strnad, M., Repčák, M. (2008): Phenolic compounds composition and physiological attributes of Matricaria chamomilla grown in copper excess. Environmental and Experimental Botany 62: 145-152.

Bačkor, M., Fahselt, D. (2008): Lichen photobionts and metal toxicity (review article). Symbiosis 46: 1-10.

Kováčik, J., Bačkor, M., Kaduková, J. (2008): Physiological responses of Matricaria chamomilla to cadmium and copper excess. Environ. Toxicol. 23: 123-130.

Dzubaj, A., Bačkor, M., Tomko, J., Peli, E., Tuba, Z. (2008): Tolernace of the lichen Xanthoria parietina (L.) Th. Fr. To metal stress. Ecotox. Environ. Safe. 70: 319-326.

Kováčik, J., Bačkor, M. (2008): Oxidative status of Matricaria chamomilla plants related to cadmium and copper uptake. Ecotoxicology 17: 471-479.


Kováčik, J., Klejdus, B., Bačkor, M., Repčák, M. (2007): Phenylalanine ammonia-lyase activity and phenolic compounds accumulation in nitrogen-deficient Matricaria chamomilla leaf rosettes. Plant Science 172: 393-399.

Bačkor, M., Váczi, P., Barták, M., Buďová, J., Dzubaj, A. (2007): Uptake, photosynthetc characteristics and membrane lipid peroxidation levels in the lichen photobiont Trebouxia erici exposed to copper and cadmium. Bryologist 110: 100-107.

Bačkor, M., Pawlik-Skowrońska, B., Buďová, J., Skowroński, T. (2007): Response to copper and cadmium stress in wild-type and copper tolerant strains of the lichen alga Trebouxia erici: metal accumulation, toxicity and non-protein
thiols. Plant Growth Regulation 52: 17-27.

Kováčik, J., Kron, I., Repčák, M., Bačkor, M. (2007): Effect of feeding precursors on phenylalanine ammonia-lyase activity and coumarin accumulation in leaves of Matricaria chamomilla L. Plant Growth Regulation 52: 9-15.

Kováčik, J., Bačkor, M. (2007): Changes of phenolic metabolism and oxidative status in nitrogen-deficient Matricaria chamomilla plants. Plant and Soil 297: 255-265.

Kováčik, J., Bačkor, M. (2007): Phenylalanine ammonia-lyase and phenolic compounds in chamomile tolerance to cadmium and copper excess. Water, Air, and Soil Pollution 185: 185-193.

Guttová, A., Tonsberg, T., Lackovičová, A., Bačkor, M. (2007): The identity of Lecanora carpathica (Lecanoraceae) described from Slovakia. Mycotaxon 101: 247-250.


Bačkor, M., Swanson, A.K., Fahselt, D. (2006): Chlorophyll a fluorescence and photosynthetic pigment composition of three Umbilicaria lichen species in relation to cliff light microenvironment. Journal of the Hattori Botanical Laboratory 99: 297-305.

Bačkor, M., Pawlik-Skowrońska, B., Tomko, J., Buďová, J., Sanità di Toppi, L. (2006): Response to copper stress in aposymbiotically grown lichen mycobiont Cladonia cristatella: uptake, viability, ergosterol and production of non-protein thiols. Mycological Research 110: 994-999.

Bačkor, M., Gibalová, A., Buďová, J., Mikeš, J., Solár, P. (2006): Cadmium-induced stimulation of stress-protein hsp70 in lichen photobiont Trebouxia erici. Plant Growth Regulation 50: 159-164.

Kováčik, J., Tomko, J., Bačkor, M., Repčák, M. (2006): Matricaria chamomilla is not a hyperaccumulator, but tolerant to cadmium stress. Plant Growth Regulation 50: 239-247.

Buďová, J., Bačkor, M., Bačkorová, M., Židzik, J. (2006): Usnic acid and copper toxicity in aposymbiotically grown lichen photobiont Trebouxia erici. Symbiosis 42: 169-174.


Bačkor, M., Fahselt, D. (2005): Tetrazolium reduction as an indicator of environmental stress in lichens and isolated bionts. Environmental and Experimental Botany 53: 125-133.

Pöykkö, H., Hyvärinen, M., Bačkor, M. (2005): Removal of lichen secondary metabolites affects food preference and survival of lichenivorous moth larvae. Ecology 86: 2623-2632.


Bačkor, M., Dzubaj, A. (2004): Short-term and chronic effects of copper, zinc and mercury on the chlorophyll content of four lichen photobionts and related alga. Journal of the Hattori Botanical Laboratory 95: 271-284.

Bačkor, M., Fahselt, D. (2004): Using EDX-micronalysis and X-ray mapping to demonstrate metal uptake by lichens. Biologia 59: 39-45.

Bačkor, M., Fahselt, D., Wu, C. T. (2004): Free proline content is positively correlated with copper tolerance of the lichen photobiont Trebouxia erici (Chlorophyta). Plant Science 167: 151-157.

Bačkor, M., Fahselt, D. (2004): Physiological attributes of the lichen Cladonia pleurota in heavy metal-rich and control sites near Sudbury (Ont., Canada). Environmental and Experimental Botany 52: 149-159.


Bačkor, M., Zetíková, J. (2003): Effects of copper, cobalt and mercury on the chlorophyll content of lichens Cetraria islandica and Flavocetraria cucullata. Journal of the Hattori Botanical Laboratory 93: 175-187.

Bačkor, M., Paulíková, K., Geralská, A., Davidson, R. (2003): Monitoring of air pollution in KoŠice (eastern Slovakia) using lichens. Polish Journal of Environmental Studies 12: 141-150.

Bačkor, M., Fahselt, D., Davidson, R. D., Wu, C. T. (2003): Effects of copper on wild and tolerant strains of the lichen photobiont Trebouxia erici (Chlorophyta) and possible tolerance mechanisms. Archives of Environmental Contamination and Toxicology 45: 159-167.

Bačkor, M., Fahselt, D. (2003): Cellulose-acetate disks as novel substrate for the resynthesis and culture of lichens. The Bryologist 106: 439-442.

Bačkor, M., Dvorský, K., Fahselt, D. (2003): Influence of invertebrate feeding on the lichen Cladonia pocillum. Symbiosis 34: 281-291.

Bačkor, M., Fahselt, D. (2003): Effects of acidity on some physiological parameters of laboratory re-synthesized lichen Cladonia cristatella and its isolated mycobiont. The Bryologist 106: 583-587.


Bačkor, M., Váczi, P. (2002): Copper tolerance in the lichen photobiont Trebouxia erici (Chlorophyta). Environmental and Experimental Botany 48: 11-20.

Wirth, C., Schulze, E.D., Lühker, B., Grigoriev, S., Siry, M., Hardes, G., Ziegler, W., Bačkor, M., Bauer, G., Vygodskaya, N.N. (2002): Fire and site type effects on the long-term carbon and nitrogen balance in pristine Siberian Scots pine forests. Plant and Soil 242: 41-63.


Bačkor, M., Hudák, J. (1999): The effect of cytokinins on the growth of lichen photobiont Trebouxia irregularis cultures. The Lichenologist 31: 207-210.


Bačkor, M., Hudák, J., Repčák, M., Ziegler, W., Bačkorová, M. (1998): The influence of pH and lichen metabolites (vulpinic acid and (+) usnic acid) on the growth of lichen photobiont Trebouxia irregularis. The Lichenologist 30: 577-582.

Bačkor, M., Hudák, J., Bačkorová, M. (1998): Comparison between growth responses of autotrophic and heterotrophic populations of lichen photobiont Trebouxia irregularis (Chlorophyta) on Cu, Hg and Cd chlorides treatment. Phyton (Horn) 32: 239-250.
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