Bioassay of cytokinin
WebNaturally occurring cytokinins are adenine-based plant hormones. Although, the effect of various substituents at positions N1, C2, N3, N 6, N7, or N9 on the biological activity of cytokinins has been studied, the C8-substituted compounds have received little attention.Here, we report the synthesis and in vitro biological testing of thirty-one …
Bioassay of cytokinin
Did you know?
WebMay 1, 1972 · The cytokinin bioassay based upon these two effects is simple and provides results after a relatively short time. The root length is measured after 6 days of germination, while a-amylase activity is determined one day later in the same barley seedlings. The parallelism of these two effects indicates, better than a single test does, the presence ... WebMar 1, 1974 · Cucumber cotyledon expanSIon in dark can therefore serve as a bioassay system for cytokinins. A comparison of the activity of different concentrations of kinetin and benzylaminopurine on cotyledon expansion in dark is shown in table 6 and figs. 3 to 5. It will be seen that benzylaminopurine is more active than kinetin in cucumber cotyledons ...
WebJul 23, 2024 · Cytokinin bioassay further demonstrated that S-4893 antagonized cytokinin-induced stimulation of callus formation and inhibition of root elongation. S-4893 also promoted seminal, crown and lateral ... WebThe effect of 28 natural and synthetic cytokinins, including cytokinin nucleotides, the growth of soybean cotyledonary callus was investigated. Generally the nucleosides and …
WebJul 1, 1992 · The bioassay is based on the expression in transformed tobacco ( Nicotiana tabacum) mesophyll protoplasts of a chimeric gene, consisting of the upstream … WebA rapid bioassay for cytokinins is described. This is based on the ability of these compounds to promote markedly the expansion of radish cotyledons excised soon after …
WebMar 1, 2009 · The development of sensitive analytical methods for the determination of cytokinin levels in plant tissues is essential for elucidating the roles of cytokinins in life science. In the past decade ...
WebAbstract A rapid bioassay for cytokinins is described. This is based on the ability of these compounds to promote markedly the expansion of radish cotyledons excised soon after seed germination. ... naturally occurring substances without cytokinin activity, induce small growth increments in the assay. Cytokinin structure-activity relationships ... littermaid 3rd edition receptacleWebThe induction of shoot buds from the filamentous protonema of moss is a classic bioassay for cytokinin. While a large literature documents this response in many species of moss and for a wide range of natural and synthetic cytokinins, to date only substituted adenine cytokinins have been examined in detail. This paper shows that at least some ... littermaid 3rd generationWebModifying the cytokinin content in plants is a means of improving plant productivity. Here, we report the development and biological activity of compound TD-K (1-(furan-2-ylmethyl)-3-(1,2,3-thiadiazol-5-yl)urea)which is related to thidiazuron. TD-K—which exhibited extremely high antisenescence activity in the wheat leaf bioassay—and INCYDE (2-chloro-6-(3 … littermaid automatic litter box hacksWebNov 1, 2015 · Abstract. The cytokinins have been implicated in many facets of plant growth and development including cell division and differentiation, shoot and root growth, apical dominance, senescence, fruit and seed development, and the response to biotic and abiotic stressors. Cytokinin levels are regulated by a balance between biosynthesis [isopentenyl ... littermaid 3rd edition troubleshootingWebXanthium expresses a large and rapid cytokinin response which can be obtained in very small solution volumes, and which is sensitive to cytokinin concen-trations as low as 10 … littermaid 980 rack off trackWebHer primary areas of investigation include Botany, Cytokinin, Food science, Horticulture and Shoot. Her study in Botany is interdisciplinary in nature, drawing from both Micropropagation and Tissue culture. Her work in the fields of Zeatin overlaps with other areas such as Seedling, Germination, Bioassay and Callus. littermaid 3rd edition reviewWebThe name cytokinin is because of its specific effects on cytokinesis. Kinetin and certain other substances show kinetin-like activity, collectively called cytokinins. ... and a three times higher CK content as judged from a bioassay of root exudate. Since cytokinins promote cell division, it is interesting that they should show binding affinity ... littermaid 3rd edition waste receptacles