Zeatin
Structural formula | |||||||||||||
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General | |||||||||||||
Surname | Zeatin | ||||||||||||
other names |
6- (4-Hydroxy-3-methyl-but- trans -2-enyl) aminopurine |
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Molecular formula | C 10 H 13 N 5 O | ||||||||||||
Brief description |
beige solid |
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External identifiers / databases | |||||||||||||
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properties | |||||||||||||
Molar mass | 219.25 g mol −1 | ||||||||||||
Physical state |
firmly |
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Melting point |
208-210 ° C |
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solubility |
soluble in DMSO and DMF |
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safety instructions | |||||||||||||
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As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . |
Zeatin is a plant hormone that was first detected in maize (Zea mays). It belongs to the cytokinins and is structurally derived from adenine .
properties
Zeatin comes as cis and the trans - isomer before. The trans isomer is a messenger substance in the plant's defense against bacteria. Furthermore, trans -zeatin is involved in plant embryonic development , regulation of the apical meristem , organ development and senescence . trans -zeatin induces the biosynthesis of salicylic acid , which is involved in the plant's defense against bacteria. cis -zeatin is also involved in the defense, but has a weaker effect.
Zeatin and the structurally related kinetin are found in coconut milk and are active ingredients that promote plant growth.
Occurrence
Zeatin is particularly found in immature maize kernels ( caryopses ) of the maize genus Zea and in the moringa plant .
literature
- S. Gajdosová, L. Spíchal, M. Kamínek, K. Hoyerová, O. Novák, PI Dobrev, P. Galuszka, P. Klíma, A. Gaudinová, E. Zizková, J. Hanus, M. Dancák, B. Trávnícek , B. Pesek, M. Krupicka, R. Vanková, M. Strnad, V. Motyka: Distribution, biological activities, metabolism, and the conceivable function of cis-zeatin-type cytokinins in plants. In: Journal of experimental botany. Volume 62, Number 8, May 2011, pp. 2827-2840, doi : 10.1093 / jxb / erq457 , PMID 21282330 .
- M. Schäfer, C. Brütting, ID Meza-Canales, DK Großkinsky, R. Vankova, IT Baldwin, S. Meldau: The role of cis-zeatin-type cytokinins in plant growth regulation and mediating responses to environmental interactions. In: Journal of experimental botany. Volume 66, Number 16, August 2015, pp. 4873-4884, doi : 10.1093 / jxb / erv214 , PMID 25998904 .
Web links
Individual evidence
- ↑ a b c d data sheet trans-Zeatin, BioReagent, plant cell culture tested, ≥97% from Sigma-Aldrich , accessed on January 3, 2016 ( PDF ).
- ↑ a b Zeatin data sheet at AlfaAesar, accessed on January 3, 2016 ( PDF )(JavaScript required) .
- ↑ EA Keshishian, AM Rashotte: Plant cytokinin signaling. In: Essays in biochemistry. Volume 58, 2015, pp. 13-27, doi : 10.1042 / bse0580013 , PMID 26374884 .
- ^ A b D. K. Großkinsky, K. Edelsbrunner, H. Pfeifhofer, E. van der Graaff, T. Roitsch: Cis- and trans-zeatin differentially modulate plant immunity. In: Plant signaling & behavior. Volume 8, number 7, July 2013, p. E24798, doi : 10.4161 / psb.24798 , PMID 23656869 , PMC 3906432 (free full text).
- ^ Agricultural Central Gazette: Plant Production, Volume 16, Issues 5–8. German Academy of Agricultural Sciences in Berlin. Institute for Documentation. Akademie-Verlag, 1971
- ↑ David WS Mok, Machteld C. Mok: Cytokinins: Chemistry, Activity, and Function . CRC Press, 1994, ISBN 0-8493-6252-0 , p. 8.