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Cytokinin oxidase is key enzyme of cytokinin degradation
Biochemistry (Moscow), 2012Cytokinin oxidase (EC 1.5.99.12) is an enzyme that catalyzes the irreversible degradation of cytokinin phytohormones that are extremely necessary for growth, development, and differentiation of plants. Cytokinin oxidase plays an important role in the regulation of quantitative level of cytokinins and their distribution in plant tissues.
K. A. Somov +3 more
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Annual Review of Plant Biology, 2012
Despite long-standing observations on diverse cytokinin actions, the discovery path to cytokinin signaling mechanisms was tortuous. Unyielding to conventional genetic screens, experimental innovations were paramount in unraveling the core cytokinin signaling circuitry, which employs a large repertoire of genes with overlapping and specific functions ...
Hwang, I, Jen Sheen, Bruno Muller
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Despite long-standing observations on diverse cytokinin actions, the discovery path to cytokinin signaling mechanisms was tortuous. Unyielding to conventional genetic screens, experimental innovations were paramount in unraveling the core cytokinin signaling circuitry, which employs a large repertoire of genes with overlapping and specific functions ...
Hwang, I, Jen Sheen, Bruno Muller
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Trends in Plant Science, 2009
Post-embryonic plant growth and development are sustained by meristems, a source of undifferentiated cells that give rise to the adult plant structures. Two hormones, cytokinin and auxin, are known to act antagonistically in controlling meristem activities.
MOUBAYIDIN L +2 more
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Post-embryonic plant growth and development are sustained by meristems, a source of undifferentiated cells that give rise to the adult plant structures. Two hormones, cytokinin and auxin, are known to act antagonistically in controlling meristem activities.
MOUBAYIDIN L +2 more
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Journal of Plant Research, 2003
Cytokinins are adenine derivatives with an isoprenoid side chain and play an essential role in plant development. Plant isopentenyltransferases that catalyze the first and rate-limiting steps of cytokinin biosynthesis have recently been identified.
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Cytokinins are adenine derivatives with an isoprenoid side chain and play an essential role in plant development. Plant isopentenyltransferases that catalyze the first and rate-limiting steps of cytokinin biosynthesis have recently been identified.
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Cytokinin Oxidase and the Degradative Metabolism of Cytokinins
1990Over the last 16 years considerable knowledge has accumulated about the metabolism of naturally occurring and synthetic cytokinins. In the case of naturally occurring cytokinins, many of the metabolites identified after the external application of a cytokinin to a variety of plant tissues have been subsequently identified as endogenous compounds. Thus,
R. Horgan, Lok Man S. Palni, L. R. Burch
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Cytokinin metabolism and the modulation of cytokinin activity in radish
Phytochemistry, 1985Abstract The metabolism of zeatin, N 6 -(Δ 2 -isopentenyl) adenine, dihydrozeatin, zeatin- O -glucoside and dihydrozeatin- O -glucoside has been studied using derooted radish seedlings. The metabolites were identified by UV and GC/MS. The patterns of metabolism are compared and provide evidence that the O -glucosyl conjugates may be storage forms ...
Jim K. Heald +2 more
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Journal of Plant Physiology, 1986
Summary The occurrence of cytokinins in the algae has been the subject of several studies. The main motivation behind this research has been the preoccupation with the utilization and exploitation of the algae as soil conditioners and fertilizers. These hormones have been detected, by bioassay and more recently through the use of high-performance ...
J. Van Staden, P. A. Mooney
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Summary The occurrence of cytokinins in the algae has been the subject of several studies. The main motivation behind this research has been the preoccupation with the utilization and exploitation of the algae as soil conditioners and fertilizers. These hormones have been detected, by bioassay and more recently through the use of high-performance ...
J. Van Staden, P. A. Mooney
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Essays in Biochemistry, 2015
Cytokinin is an essential plant hormone that is involved in a wide range of plant growth and developmental processes which are controlled through its signalling pathway. Cytokinins are a class of molecules that are N6-substituted adenine derivatives, such as isopentenyl adenine, and trans- and cis-zeatin, which are common in most plants. The ability to
Erika A. Keshishian, Aaron M. Rashotte
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Cytokinin is an essential plant hormone that is involved in a wide range of plant growth and developmental processes which are controlled through its signalling pathway. Cytokinins are a class of molecules that are N6-substituted adenine derivatives, such as isopentenyl adenine, and trans- and cis-zeatin, which are common in most plants. The ability to
Erika A. Keshishian, Aaron M. Rashotte
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1967
Publisher Summary This chapter focuses on the group of plant hormones called cytokinins, which are defined as compounds that induce cell division in plant cells in cooperation with an auxin. Gibberellins move in plants in a nonpolar fashion, whereas the cytokinins have been reported to move like auxins in a basipetal polar fashion.
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Publisher Summary This chapter focuses on the group of plant hormones called cytokinins, which are defined as compounds that induce cell division in plant cells in cooperation with an auxin. Gibberellins move in plants in a nonpolar fashion, whereas the cytokinins have been reported to move like auxins in a basipetal polar fashion.
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Current Opinion in Plant Biology, 1998
Although cytokinin plays a central role in plant development, our knowledge of the biosynthesis, distribution, perception and signal transduction of cytokinin is limited. Recent molecular-genetic studies have, however, implicated involvement of a two-component system in cytokinin signal transduction.
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Although cytokinin plays a central role in plant development, our knowledge of the biosynthesis, distribution, perception and signal transduction of cytokinin is limited. Recent molecular-genetic studies have, however, implicated involvement of a two-component system in cytokinin signal transduction.
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