The study was performed in order to evaluate Roundup-induced genotoxic effects in Hordeum vulgare L. cv. Madalin root meristems and to analyze herbicide impact on length growth of barley seedlings. Caryopses were treated for 3 hours and 6 hours with 0.1%, 0.5%, 1.0% and 2.0% Roundup solutions (v/v), containing 0.36 mg ml−1, 1.8 mg ml−1, 3.6 mg ml−1 and 7.2 mg ml−1 glyphosate active ingredient. Mitotic index decreased in both exposure times with concentration increase. In 3-h treatment, its average values decreased from 4.73 ± 0.31% to 1.51 ± 0.43%, whereas in 6-h treatment this parameter declined from 3.86 ± 0.92% to 0.62 ± 0.15%. The highest ana-telophase aberration rates were noted in 3-h treatments (8.91%, 9.19%, 9.47%, 11.25%, comparatively to control — 5.99%). Roundup enhanced the number of metaphase disturbances proving its noxious effect on normal functioning of mitotic spindle. Seedling growth was negatively influenced at all tested concentrations in both exposure times. The length decreased as concentration increased, so that the average length is 7.5–9 times smaller than in control at the maximum concentration, in both exposures.
Bolognesi, C. (2003) Genotoxicity of pesticides: a review of human biomonitoring studies. Mut. Res. 543, 251–272.
Bolognesi C. , 'Genotoxicity of pesticides: a review of human biomonitoring studies ' (2003 ) 543 Mut. Res. : 251 -272 .
Cavalcante, D. G. S. M., Martinez, C. B. R., Sofia, S. H. (2008) Genotoxic effects of Roundup® on the fish Prochilodus lineatus. Mut. Res. 655, 41–46.
Sofia S. H. , 'Genotoxic effects of Roundup® on the fish Prochilodus lineatus ' (2008 ) 655 Mut. Res. : 41 -46 .
Dimitrov, B. D., Gadeva, P. G., Benova, D. K., Bineva, M. V. (2006) Comparative genotoxicity of the herbicides Roundup, Stomp and Reglone in plant and mammalian test systems. Mutagenesis 21, 375–382.
Bineva M. V. , 'Comparative genotoxicity of the herbicides Roundup, Stomp and Reglone in plant and mammalian test systems ' (2006 ) 21 Mutagenesis : 375 -382 .
Duke, S. O., Powles, S. B. (2010) Glyphosate-resistant crops and weeds: Now and in the future. AgBioForum 12, 346–357.
Powles S. B. , 'Glyphosate-resistant crops and weeds: Now and in the future ' (2010 ) 12 AgBioForum : 346 -357 .
El-Ghamery, A. A., El-Nahas, A. I., Mansour, M. M. (2000) The action of atrazine herbicide as an inhibitor of cell division on chromosomes and nucleic acid content in root meristems of Allium cepa and Vicia faba. Cytologia 65, 277–287.
Mansour M. M. , 'The action of atrazine herbicide as an inhibitor of cell division on chromosomes and nucleic acid content in root meristems of Allium cepa and Vicia faba ' (2000 ) 65 Cytologia : 277 -287 .
Gamborg, O. L., Wetter, L. R. (ed.) (1975) Plant Tissue Culture Methods, National Research Council of Canada, Prairie Regional Laboratory, Saskatoon (Sask).
'', in Plant Tissue Culture Methods , (1975 ) -.
Giesy, J. P., Dobson, S., Solomon, K. R. (2000) Ecotoxicological risk assessment for Roundup® herbicide. Rev. Environ. Contam. Toxicol. 167, 35–120.
Solomon K. R. , 'Ecotoxicological risk assessment for Roundup® herbicide ' (2000 ) 167 Rev. Environ. Contam. Toxicol. : 35 -120 .
Hoagland, R. E. (1980) Effects of glyphosate on metabolism of phenolic compounds: VI. Effects of glyphosine and glyphosate metabolites on phenylalanine ammonia-lyase activity, growth, and protein, chlorophyll, and anthocyanin levels in soybean (Glycine max) seedlings. Weed Sci. 28, 393–400.
Hoagland R. E. , 'Effects of glyphosate on metabolism of phenolic compounds: VI. Effects of glyphosine and glyphosate metabolites on phenylalanine ammonia-lyase activity, growth, and protein, chlorophyll, and anthocyanin levels in soybean (Glycine max) seedlings ' (1980 ) 28 Weed Sci. : 393 -400 .
Holečková, B. (2006) Evaluation of the in vitro effect of glyphosate-based herbicide on bovine lymphocytes using chromosome painting. Bull. Vet. Inst. Pulawy 50, 533–536.
Holečková B. , 'Evaluation of the in vitro effect of glyphosate-based herbicide on bovine lymphocytes using chromosome painting ' (2006 ) 50 Bull. Vet. Inst. Pulawy : 533 -536 .
Kaymak, F., Muranli, F. D. G. (2006) The genotoxic effects of logran on Hordeum vulgare L. and Triticum aestivum L. Acta Biol. Hungarica 57, 71–80.
Muranli F. D. G. , 'The genotoxic effects of logran on Hordeum vulgare L. and Triticum aestivum L ' (2006 ) 57 Acta Biol. Hungarica : 71 -80 .
Kleter, G. A., Harris, C., Stephenson, G., Unsworth, J. (2008) Comparison of herbicide regimes and the associated potential environmental effects of glyphosate-resistant crops versus what they replace in Europe. Pest Manag. Sci. 64, 479–488.
Unsworth J. , 'Comparison of herbicide regimes and the associated potential environmental effects of glyphosate-resistant crops versus what they replace in Europe ' (2008 ) 64 Pest Manag. Sci. : 479 -488 .
Liu, W., Li, P. J., Qi, X. M., Zhou, Q. X., Zheng, L., Sun, T. H., Yang, Y. S. (2005) DNA changes in barley (Hordeum vulgare) seedlings induced by cadmium pollution using RAPD analysis, Chemosphere 61, 158–167.
Yang Y. S. , 'DNA changes in barley (Hordeum vulgare) seedlings induced by cadmium pollution using RAPD analysis ' (2005 ) 61 Chemosphere : 158 -167 .
Lumen, B. O. (2008) Lunasin: a novel cancer preventive seed peptide that modifies chromatin. J. AOAC Int. 91, 932–935.
Lumen B. O. , 'Lunasin: a novel cancer preventive seed peptide that modifies chromatin ' (2008 ) 91 J. AOAC Int. : 932 -935 .
Mamy, L., Barriuso, E., Gabrielle, B. (2005) Environmental fate of herbicides trifluralin, metazachlor, metamitron and sulcotrione compared with that of glyphosate, a substitute broad spectrum herbicide for different glyphosate-resistant crops. Pest Manag. Sci. 61, 905–916.
Gabrielle B. , 'Environmental fate of herbicides trifluralin, metazachlor, metamitron and sulcotrione compared with that of glyphosate, a substitute broad spectrum herbicide for different glyphosate-resistant crops ' (2005 ) 61 Pest Manag. Sci. : 905 -916 .
Neumann, G., Kohls, S., Landsberg, E., Souza, K. S. O., Yamada, T., Römheld, V. (2006) Relevance of glyphosate transfer to nontarget plants via the rhizosphere. Z. Pflanzenk. Pflanzen 20, 963–969.
Römheld V. , 'Relevance of glyphosate transfer to nontarget plants via the rhizosphere ' (2006 ) 20 Z. Pflanzenk. Pflanzen : 963 -969 .
Pline-Srnic, W. (2006) Physiological mechanisms of glyphosate resistance. Weed Technol.20, 290–300.
Pline-Srnic W. , 'Physiological mechanisms of glyphosate resistance ' (2006 ) 20 Weed Technol. : 290 -300 .
Poppitt, S. D. (2007) Soluble fibre oat and barley β-glucan enriched products: can we predict cholesterol-lowering effects? Brit. J. Nutr. 97, 1049–1050.
Poppitt S. D. , 'Soluble fibre oat and barley β-glucan enriched products: can we predict cholesterol-lowering effects? ' (2007 ) 97 Brit. J. Nutr. : 1049 -1050 .
Prasad, S., Srivastava, S., Singh, M., Shukla, Y. (2009) Clastogenic effects of glyphosate in bone marrow cells of Swiss albino mice. J. Toxicol. Article ID 308985, 6 p.
Raipulis, J., Toma, M. M., Balode, M. (2009) Toxicity and genotoxicity testing of Roundup. Proc. of Latv. Acad. Sci., Sect B, Natural, Exact, and Applied Sciences 63, 29–32.
Balode M. , 'Toxicity and genotoxicity testing of Roundup ' (2009 ) 63 Proc. of Latv. Acad. Sci., Sect B, Natural, Exact, and Applied Sciences : 29 -32 .
Rank, J., Jensen, A. G., Skov, B., Pedersen, L. H., Jensen, K. (1993) Genotoxicity testing of the herbicide Roundup and its active ingredient glyphosate isopropylamine using the mouse bone marrow micronucleus test, Salmonella mutagenicity test, and Allium anaphase-telophase test. Mut. Res. 30, 29–36.
Jensen K. , 'Genotoxicity testing of the herbicide Roundup and its active ingredient glyphosate isopropylamine using the mouse bone marrow micronucleus test, Salmonella mutagenicity test, and Allium anaphase-telophase test ' (1993 ) 30 Mut. Res. : 29 -36 .
Salbego, J., Pretto, A., Gioda, C. R., Menezes, C. C., Lazzari, M. R., Neto, J. R., Baldiserrotto, B., Loro, V. L. (2010) Herbicide formulation with glyphosate affects growth, acetylcholinesterase activity, and metabolic and hematological parameters in piava (Leporinus obtusidens). Arch. Environ. Contam. Toxicol. 58, 740–745.
Loro V. L. , 'Herbicide formulation with glyphosate affects growth, acetylcholinesterase activity, and metabolic and hematological parameters in piava (Leporinus obtusidens) ' (2010 ) 58 Arch. Environ. Contam. Toxicol. : 740 -745 .
Singh, P., Srivastava, A. K., Singh, A. K. (2008) Cell cycle stage specific application of cypermethrin and carbendazim to assess the genotoxicity in somatic cells of Hordeum vulgare L. Bull. Environ. Contam. Toxicol. 81, 258–261.
Singh A. K. , 'Cell cycle stage specific application of cypermethrin and carbendazim to assess the genotoxicity in somatic cells of Hordeum vulgare L ' (2008 ) 81 Bull. Environ. Contam. Toxicol. : 258 -261 .
Smith, A. E., Aubin, A. J. (1993) Degradation of 14C-glyphosate in Saskatchewan soils. Bull. Environ. Contam. Toxicol. 50, 499–505.
Aubin A. J. , 'Degradation of 14C-glyphosate in Saskatchewan soils ' (1993 ) 50 Bull. Environ. Contam. Toxicol. : 499 -505 .
Sudhakar, R., Gowda, K. N. N., Venu, G. (2001) Mitotic abnormalities induced by silk dyeing industry effluents in the cells of Allium cepa. Cytologia 66, 235–239.
Venu G. , 'Mitotic abnormalities induced by silk dyeing industry effluents in the cells of Allium cepa ' (2001 ) 66 Cytologia : 235 -239 .
Villanueva, M. J. C., Muñiz, B. F., Tames, R. S. (1985) Effects of glyphosate on growth and the chlorophyll and carotenoid levels of yellow nutsedge (Cyperus esculentus). Weed Sci. 33, 751–754.
Tames R. S. , 'Effects of glyphosate on growth and the chlorophyll and carotenoid levels of yellow nutsedge (Cyperus esculentus) ' (1985 ) 33 Weed Sci. : 751 -754 .
Williams, G. M., Kroes, R., Munro, I. C. (2000) Safety evaluation and risk assessment of the herbicide Roundup and its active ingredient, glyphosate, for humans. Regul. Toxicol. Pharm. 31, 117–165.
Munro I. C. , 'Safety evaluation and risk assessment of the herbicide Roundup and its active ingredient, glyphosate, for humans ' (2000 ) 31 Regul. Toxicol. Pharm. : 117 -165 .
Zamfirescu, S. R., Zamfirescu, O. (2008) Elemente de statistica aplicate in ecologie, Ed. Univ. “Al. I. Cuza”, Iasi.
Zamfirescu O. , '', in Elemente de statistica aplicate in ecologie , (2008 ) -.
Zhou, H., Berg, J. D., Blank, S. E., Chay, C. A., Chen, G., Eskelsen, S. R., Fry, J. E., Hoi, S., Isakson, P. J., Lawton, M. B., Metz, S. G., Rempel, C. B., Ryerson, D. K., Sansone, A. P., Skook, A. L., Starke, R. J., Tichota, J. M., Valenti, S. A. (2003) Field efficacy assessment of transgenic Roundup ready wheat. Crop Sci. 43, 1072–1075.
Valenti S. A. , 'Field efficacy assessment of transgenic Roundup ready wheat ' (2003 ) 43 Crop Sci. : 1072 -1075 .
Zobiole, L. H. S., Oliveira, R. S., Visentainer, J. V., Kremer, R. J., Bellaloui, N., Yamada, T. (2010) Glyphosate affects seed composition in glyphosate-resistant soybean, J. Agric. Food Chem. 58, 4517–4522.
Yamada T. , 'Glyphosate affects seed composition in glyphosate-resistant soybean ' (2010 ) 58 J. Agric. Food Chem. : 4517 -4522 .