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The Effect of Topophysis on the In Vitro Development of and on Its Metabolism of Meta-Topolin Riboside.
Plants (Basel)
October 2023
Laboratory for Applied In Vitro Plant Biotechnology, Ghent University, Valentin Vaerwyckweg 1, 9000 Ghent, Belgium.
Article Synopsis
- The study explored how the position of plant explants (upper, middle, and basal sections) affects shoot production and growth in a tropical tree species when cultured in vitro.
- The middle section of the explants produced the most shoots, longest lengths, and highest node counts, while the upper and basal sections showed different growth characteristics but no rooting occurred.
- The research emphasizes the influence of topophysis on plant hormone distribution, suggesting that these factors should be considered when creating protocols for consistent in vitro cultures.
Integration of genome wide association studies and co-expression networks reveal roles of PtoWRKY 42-PtoUGT76C1-1 in trans-zeatin metabolism and cytokinin sensitivity in poplar.
New Phytol
August 2021
Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, No. 35 Qinghua East Road, Beijing, 100083, China.
Cytokinins are important for in vitro shoot regeneration in plants. Cytokinin N-glucosides are produced via an irreversible glycosylation pathway, which regulates the endogenous cytokinin content. Although cytokinin N-glucoside pathways have been uncovered in higher plants, no regulator has been identified to date.
View Article and Find Full Text PDFCytokinin -glucosides: Occurrence, Metabolism and Biological Activities in Plants.
Biomolecules
December 2020
Laboratory of Hormonal Regulations in Plants, Institute of Experimental Botany of the Czech Academy of Sciences, Rozvojová 263, 165 02 Prague 6, Czech Republic.
Cytokinins (CKs) are a class of phytohormones affecting many aspects of plant growth and development. In the complex process of CK homeostasis in plants, -glucosylation represents one of the essential metabolic pathways. Its products, CK 7- and 9-glucosides, have been largely overlooked in the past as irreversible and inactive CK products lacking any relevant physiological impact.
View Article and Find Full Text PDFNew Insights Into the Metabolism and Role of Cytokinin -Glucosides in Plants.
Front Plant Sci
June 2020
Institute of Experimental Botany of the Czech Academy of Sciences, Prague, Czechia.
Cytokinin (CK) -glucosides are the most abundant group of CK metabolites in many species; however, their physiological role was for a long time perceived as irreversible storage CK forms only. Recently, a comprehensive screen showed that only vascular plants form CK -glucosides in contrast to mosses, algae, and fungi. The formation of CK -glucosides as biologically inactive CK conjugates thus represents an evolutionarily young mechanism for deactivation of CK bases.
View Article and Find Full Text PDFResponse of cytokinins and nitrogen metabolism in the fronds of Pteris sp. under arsenic stress.
PLoS One
August 2020
Laboratory of Hormonal Regulations in Plants, Institute of Experimental Botany of the Czech Academy of Sciences, Prague, Czech Republic.
Given the close relationship between cytokinins (CKs), photosynthesis and nitrogen metabolism, this study assessed the effect of arsenic (As) contamination on these metabolic components in the As-hyperaccumulators Pteris cretica L. var. Albo-lineata (Pc-A) and var.
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