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. Phileva. 2003. Investigation of the tolerance to high copper ions concentration in the nutrient medium in hybrids between triticale and tritordeum. Plant Science (B), 40: 219–223. Phileva S

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Berges, R., Rott, M. and Seemüller, E. (2000): Range of phytoplasma concentrations in various plant hosts as determined by competitive polymerase chain reaction. Phytopathology 90, 1145–1152. Range of phytoplasma concentrations

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Kalayci, M., Torun, B., Eker, S., Aydin, M., Ozturk, L., Cakmak, I. 1999. Grain yield, zinc efficiency and zinc concentration of wheat cultivars grown in a zinc-deficiency calcareous soil in field and greenhouse. Field Crops Res. 63 :87

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Acta Biologica Hungarica
Authors: Barbara Barna, A. Szász, T. Asztalos, Z. Szupera, L. Vécsei, Helmi Houtzager, and Magdolna Szente

In the present electrophysiological study the effect of aminooxyacetic acid (AOAA) on the cortical epileptogenicity, and on the basic electro-cortical activity was investigated in anesthetized rats.AOAA did not induce spontaneous epileptiform discharges but modified the somato-sensory evoked responses and the cortical epileptogenicity (induced by 4-aminopyridine) in the same manner depending on its concentration. AOAA at low concentrations increased the amplitude of evoked responses and the ipsilateral manifestation of epileptiform activity, however, at high concentrations significantly suppressed both the evoked responses and the induction and expression of seizures discharges. The anticonvulsive effect of AOAA was time-dependent (reached its maximum after 2h AOAA pre-treatment) and reversible. AOAA at low concentrations probably increases the efficacy of the NMDA excitatory system and decreases GABA-synthesis, resulting neuronal hyperexcitation. However, AOAA at high concentrations can lead to an effective cortical inhibition through intra- and extracellular accumulation of GABA. The gradual GABA accumulation - up to a certain level - at the synapses could also explain the time-dependency of the anticonvulsive effect of AOAA.

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., Schnug, E., Haneklaus, S., Simic, D. (1997): Genetic and environmental influences on micronutrients concentrations in maize ( Zea mays L.) plants. pp. 209–214. In: van Cleemput, O., Haneklaus, S., Hofman, G., Schnug, E., Vermoesen, A. (eds

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high NaCl concentrations. Physiologie Vegetale , 23 , 887-894. Stability of the salt-resistance character in Nicotiana cell lines adapted to grow in high NaCl concentrations Physiologie Vegetale

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-Dicotylédones, Apétales-Dialypétales. Publications Scientifiques tunisiennes 293 . Pourrat, Y., Dutuit, P. (1993) Effects of the sodium and calcium concentration on the in vitro growth of Atriplex halimus L. plantlets. J. Plant

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Barneix, A.J., Fatta, N., Kade, M., Pflüger, L., Suárez, E.Y. 1998. Effect of wheat chromosome 7BS on grain protein concentration. European Wheat Aneuploid Co-operative Newsletter: 13

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pathogenic bacteria surviving in the intestine, depending on the sensitivity to glyphosate. Regarding a ruminal setting, these findings could not be confirmed [ 19 ]. Shehata et al. [ 20 ] determined differing minimum inhibitory concentrations (MIC) for

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Genc, Y., Verbyla, A.P., Torun, A.A., Cakmak, I., Willsmore, K., Wallwork, H., McDonald, G.K. 2009. Quantitative trait loci analysis of zinc efficiency and grain zinc concentration in wheat using whole genome average interval mapping. Plant Soil 314

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