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National Repository of Grey Literature 1 records found  Search took 0.00 seconds. 
Interakcia cytokinínov a giberelínov počas predlžovania hypokotylu v odpovedi na rôzne teplotné podmienky
 Tarbajová, Vladimíra
This study observed the involvement of plant hormones, cytokinins during extension of the hypocotyl of Arabidopsis thaliana seedlings ecotype Col-0 in response to ambient temperature. It also observed possible coordination of phytohormones cytokinins with gibberellin pathway, using pentuple della mutant lines background ecotype Ler-0 exposing to elevated temperature. Attention was also paid to regulation of extension growth on the transcriptional level using single and multiple pif mutant lines on a background of the ecotype Col-0. The exogenous application of cytokinin (tZ) demonstrated that elevated levels of cytokinins stimulate the extension growth of the hypocotyl under conditions of optimum temperature (20 ° C). In contrast, the trans-zeatin treated wild type of Arabidopsis thaliana showed inhibition of growth of the hypocotyl under conditions of high ambient temperature (29 ° C). Using a gibberellins´ biosynthesis inhibitor, paclobutrazol, some modulation of hypocotyl elongation thru cytokinins was found in response to the optimal and increased ambient temperature.
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