Study_of_auxin_cytokinin_and_gibberellin (1).pdf

Study_of_auxin_cytokinin_and_gibberellin (1).pdf - European...

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European Journal of Biotechnology and Bioscience 29 European Journal of Biotechnology and Bioscience Online ISSN: 2321-9122, Impact Factor: RJIF 5.44 Volume 4; Issue 12, December 2016; Page No. 29-44 Study of a uxin, cytokinin and gibberellin-like activity of heterocyclic compounds derivatives of pyrimidine, pyridine, pyrazole and isoflavones * 1 Victoria Tsygankova, 2 Yaroslav Andrusevich, 3 Olexandra Shtompel, 4 Olexandr Myroljubov, 5 Artem Hurenko, 6 Roman Solomyanny, 7 Galyna Mrug, 8 Mykhaylo Frasinyuk, 9 Oleg Shablykin, 10 Volodymyr Brovarets 1-3, 5-10 Department for Chemistry of Bioactive Nitrogen-Containing Heterocyclic Compounds, Institute of Bioorganic Chemistry and Petrochemistry, National Academy of Sciences of Ukraine, 1, Murmanskaya str., Kyiv, Ukraine 4 Department of Phytohormonology, M.G. Kholodny Institute of Botany, National Academy of Sciences of Ukraine, 2, Tereshchenkivska st., Kyiv, Ukraine *Corresponding author ScD Victoria Tsygankova, E-Mail: [email protected] Abstract The phytohormone-like activity of synthetic low molecular weight heterocyclic compounds derivatives of pyrimidine, pyridine, pyrazole, and isoflavones was studied. Testing of stimulating effect of synthetic heterocyclic compounds on seed germination and seedling growth of flax ( Linum usitatissimum L.) of cultivar Ukrainian 3 showed expressive auxin-like activity of these compounds. The growth parameters of 15 th -day-old flax seedlings grown on the solution of heterocyclic compounds used at concentration 10 -8 M/l of distilled water were higher or similar to growth parameters of flax seedlings grown on the water solution of auxins IAA and NAA used at the same concentration as compared to lower growth parameters of control flax seedlings grown on the distilled water (control). The specific bioassay on auxin-like activity showed high stimulating effect of heterocyclic compounds derivatives of pyrimidine, pyridine, pyrazole, and isoflavones used at concentration 10 -8 M/l of distilled water on rhizogenesis on the 14 th -day-old leaf petioles isolated from seedlings of haricot bean ( Phaseolus vulgaris L.) of cultivar Belozernaya. The specific bioassay on cytokinin-like activity conducted on the 16 th -day-old cotyledons isolated from seeds of muscat pumpkin ( Cucurbita moschata Duch. et Poir.) of cultivar Gilea, showed that heterocyclic compounds derivatives of pyrimidine, pyridine, pyrazole, and isoflavones used in concentration 10 -8 M/l of distilled water demonstrated high stimulating activity on growth of biomass of isolated cotyledons of pumpkin, which was similar or higher than activity of cytokinin Kinetin. The specific bioassay on gibberellin-like activity conducted on the 3 rd - day-old seedlings of lettuce ( Lactuca sativa L.) of cultivar Berlin testified that some heterocyclic compounds derivatives of pyrazole, isoflavones, and pyridine used in concentrations ranging from 10 -4 M to 10 -9 M/1 of distilled water revealed minor stimulating effect on elongation of hypocotyl of lettuce seedlings in relation to control , but their activity was significantly lower than activity of gibberellic acid GA3. This bioassay showed also
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