Unlike in the conventional CK biosynthesis pathway in plants, ..
(B) The cytokinin biosynthesis pathway, ..
Although many studies established nitric oxide (NO) as a signaling molecule in plants, the identification of target molecules of NO has remained elusive due to the lack of in depth molecular studies. Our quantitative proteome analysis suggests the differential regulation of 248 proteins and dynamic regulation of metabolic pathways by exogenous NO donor in chickpea. This is the first report in legumes pointing at the potential candidates that attribute the reported functions of NO in plants.
An alternative cytokinin biosynthesis pathway. - CAB …
The biosynthetic pathways of cytokinins and their related genes in higher plants have been well documented (). The first step of cytokinin biosynthesis in higher plants is isopentenylation of ATP and ADP catalyzed by isopentenyltransferase (IPT) using dimethylallyl diphosphate as a substrate (; ). This is thought to be a rate-limiting step of cytokinin biosynthesis. In , nine genes encoding IPT have been cloned, and transgenic plants overexpressing these genes show elevated concentrations of endogenous cytokinins (). Furthermore, the application of a promoter of floral homeotic genes would be useful for inducing transgenes in a floral organ-specific manner. The floral homeotic genes () and () are specifically expressed in whorls 1 and 2 and whorls 2 and 3, respectively (; ). Therefore, transgenic plants expressing under the control of the promoters of these genes would specifically elevate cytokinin concentration and cytokinin signal in the sepals and petals and in the petals and stamens, respectively.
CSIRO PUBLISHING | Functional Plant Biology
Sponsel, V. M. (1995). "Gibberellin biosynthesis and metabolism". Plant Hormones: Physiology, Biochemistry and Molecular Biology. Dordrecht: Kluwer. pp. 66-97.
Lead toxicity in plants - SciELO
McGaw, B. A. (1995). "Cytokinin biosynthesis and metabolism". Plant Hormones: Physiology, Biochemistry and Molecular Biology. Dordrecht: Kluwer. pp.98-117.