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Role of Cytokinins in Senescence, Antioxidant Defence and Photosynthesis
M. Hönig, L. Plíhalová, A. Husičková, J. Nisler, K. Doležal,
Jazyk angličtina Země Švýcarsko
Typ dokumentu časopisecké články, přehledy
NLK
Directory of Open Access Journals
od 2000
Free Medical Journals
od 2000
Freely Accessible Science Journals
od 2000
PubMed Central
od 2007
Europe PubMed Central
od 2007
ProQuest Central
od 2000-03-01
Open Access Digital Library
od 2000-01-01
Open Access Digital Library
od 2007-01-01
Health & Medicine (ProQuest)
od 2000-03-01
ROAD: Directory of Open Access Scholarly Resources
od 2000
PubMed
30558142
DOI
10.3390/ijms19124045
Knihovny.cz E-zdroje
- MeSH
- antioxidancia chemie metabolismus MeSH
- cytokininy chemie metabolismus MeSH
- flavonoidy analýza MeSH
- fotosyntéza MeSH
- listy rostlin chemie růst a vývoj fyziologie MeSH
- molekulární struktura MeSH
- rostliny chemie MeSH
- vývoj rostlin MeSH
- vztahy mezi strukturou a aktivitou MeSH
- Publikační typ
- časopisecké články MeSH
- přehledy MeSH
Cytokinins modulate a number of important developmental processes, including the last phase of leaf development, known as senescence, which is associated with chlorophyll breakdown, photosynthetic apparatus disintegration and oxidative damage. There is ample evidence that cytokinins can slow down all these senescence-accompanying changes. Here, we review relationships between the various mechanisms of action of these regulatory molecules. We highlight their connection to photosynthesis, the pivotal process that generates assimilates, however may also lead to oxidative damage. Thus, we also focus on cytokinin induction of protective responses against oxidative damage. Activation of antioxidative enzymes in senescing tissues is described as well as changes in the levels of naturally occurring antioxidative compounds, such as phenolic acids and flavonoids, in plant explants. The main goal of this review is to show how the biological activities of cytokinins may be related to their chemical structure. New links between molecular aspects of natural cytokinins and their synthetic derivatives with antisenescent properties are described. Structural motifs in cytokinin molecules that may explain why these molecules play such a significant regulatory role are outlined.
Citace poskytuje Crossref.org
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- $a Hönig, Martin $u Department of Chemical Biology and Genetics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, Šlechtitelů 27, CZ-783 71 Olomouc, Czech Republic. martin.honig@upol.cz. Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University & Institute of Experimental Botany ASCR, Šlechtitelů 27, CZ-783 71 Olomouc, Czech Republic. martin.honig@upol.cz.
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- $a Cytokinins modulate a number of important developmental processes, including the last phase of leaf development, known as senescence, which is associated with chlorophyll breakdown, photosynthetic apparatus disintegration and oxidative damage. There is ample evidence that cytokinins can slow down all these senescence-accompanying changes. Here, we review relationships between the various mechanisms of action of these regulatory molecules. We highlight their connection to photosynthesis, the pivotal process that generates assimilates, however may also lead to oxidative damage. Thus, we also focus on cytokinin induction of protective responses against oxidative damage. Activation of antioxidative enzymes in senescing tissues is described as well as changes in the levels of naturally occurring antioxidative compounds, such as phenolic acids and flavonoids, in plant explants. The main goal of this review is to show how the biological activities of cytokinins may be related to their chemical structure. New links between molecular aspects of natural cytokinins and their synthetic derivatives with antisenescent properties are described. Structural motifs in cytokinin molecules that may explain why these molecules play such a significant regulatory role are outlined.
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- $a Husičková, Alexandra $u Department of Biophysics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, Šlechtitelů 27, CZ-783 71 Olomouc, Czech Republic. alexandra.husickova@upol.cz.
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- $a Nisler, Jaroslav $u Department of Chemical Biology and Genetics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, Šlechtitelů 27, CZ-783 71 Olomouc, Czech Republic. jaroslav.nisler@gmail.com. Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University & Institute of Experimental Botany ASCR, Šlechtitelů 27, CZ-783 71 Olomouc, Czech Republic. jaroslav.nisler@gmail.com.
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- $a Doležal, Karel $u Department of Chemical Biology and Genetics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, Šlechtitelů 27, CZ-783 71 Olomouc, Czech Republic. karel.dolezal@upol.cz. Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University & Institute of Experimental Botany ASCR, Šlechtitelů 27, CZ-783 71 Olomouc, Czech Republic. karel.dolezal@upol.cz.
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