koelreuteria elegans, popularly known as “flame gold” is an ornamental tree. in vitro callus induction and regeneration from various explants (eaf segments and cotyledonary leaf) were studied on modified ms medium. the highest callus induction rate (80%) and multiplication was obtained in 2 mg/l 2,4-d from leaf segments. calli transferred in 1.5 mg/l bap resulted in efficient shoot regeneration...

With a very diverse structure and small molecules, phytohormones are regulators of plant growth development. Despite the fact that they synthesized by plants in quantities, highly active physiologically. According to their action, can be divided into two categories, as either activators development or inhibitors, with auxins cytokinins belonging former group. Auxins apical meristems shoots, but...

Transformed hairy roots induced on Solanum dulcamara plants by Ri plasmid of Agrobacterium rhizogenes strain 8196 and A4T, exhibited a higher levels of auxin and cytokinin activity as compared with that of non transformed control roots. Endogenous pbytohormones; auxins and cytokinins were determined in an ethyl acetate fractionated extracts using bioassay methods of Hordium coleoptile test for ...

Abstract Hairy root cultures are an efficient tool for the biotechnological production of plant metabolites and a convenient experimental model analyzing effect various compounds on metabolism. In contrast to many other types in vitro cultures, hairy roots do not require external supply phytohormones medium. Consequently, growth regulators such as auxins cytokinins rarely used elicitors culture...

The influence of hormones in water subphase on the stability of monolayers built of phospholipid mixtures extracted from embryogenic (PLE) and nonembryogenic (PLNE) wheat calli was examined. Additionally, experiments on individual lipids, dipalmitoylphosphatidylcholine (DPPC) and dipalmitoylphosphatidic acid (DPPA), were performed. DPPC was chosen because it was the main phospholipid present in...

Abstract Auxins play an important role in plant physiology and are involved numerous aspects of development, such as cell division, elongation differentiation, fruit phototropic response. In addition, through their antagonistic interaction with cytokinins, auxins a key the regulation root growth apical dominance. Thanks to this capacity determine architecture, natural synthetic have been succes...

The present study demonstrates an efficient protocol for in vitro mass propagation of A. curassavica through direct as well as indirect regeneration. The effect of MS and L2 media supplemented with various concentrations and combinations of growth regulators has been studied. The growth regulators used include BAP and kinetin (cytokinins) and IAA, IBA, NAA and 2, 4-D (auxins). MS media proved b...

Abscisic acid (ABA), auxins, cytokinins, gibberellic acid, alone or in combination were tested for their effects on short-term sucrose uptake in sugar beet (Beta vulgaris cv USH-20) roots. The effect of ABA on active sucrose uptake varied from no effect to the more generally observed 1.4-to 3.0-fold stimulation. A racemic mixture of ABA and its trans isomer were more stimulatory than ABA alone....