ENOD40 affects elongation growth in tobacco Bright Yellow-2 cells by alteration of ethylene biosynthesis kinetics

Plant developmental processes are controlled by co-ordinated action of phytohormones and plant genes encoding components of developmental response pathways. ENOD40 was identified as a candidate for such a plant factor with a regulatory role during nodulation. Although its mode of action is poorly un...

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Veröffentlicht in:Journal of experimental botany. - 1985. - 57(2006), 12 vom: 15., Seite 3271-82
1. Verfasser: Ruttink, Tom (VerfasserIn)
Weitere Verfasser: Boot, Kees, Kijne, Jan, Bisseling, Ton, Franssen, Henk
Format: Aufsatz
Sprache:English
Veröffentlicht: 2006
Zugriff auf das übergeordnete Werk:Journal of experimental botany
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Cytokinins Ethylenes Indoleacetic Acids Plant Growth Regulators Plant Proteins ethylene 91GW059KN7 Amino Acid Oxidoreductases mehr... EC 1.4.- 1-aminocyclopropane-1-carboxylic acid oxidase EC 1.4.3.- Lyases EC 4.- 1-aminocyclopropanecarboxylate synthase EC 4.4.1.14
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520 |a Plant developmental processes are controlled by co-ordinated action of phytohormones and plant genes encoding components of developmental response pathways. ENOD40 was identified as a candidate for such a plant factor with a regulatory role during nodulation. Although its mode of action is poorly understood, several lines of evidence suggest interaction with phytohormone response pathways. This hypothesis was investigated by analysing cytokinin-, auxin-, and ethylene-induced responses on cell growth and cell division in transgenic 35S:NtENOD40 Bright Yellow-2 (BY-2) tobacco cell suspensions. It was found that cell division frequency is controlled by the balance between cytokinin and auxin in wild-type cells and that this regulation is not affected in 35S:NtENOD40 lines. Elongation growth, on the other hand, is reduced upon overexpression of NtENOD40. Analysis of ethylene homeostasis shows that ethylene accumulation is accelerated in 35S:NtENOD40 lines. ENOD40 action can be counteracted by an ethylene perception blocker, indicating that ethylene is a negative regulator of elongation growth in 35S:NtENOD40 cells, and that the NtENOD40-induced response is mediated by alteration of ethylene biosynthesis kinetics 
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700 1 |a Boot, Kees  |e verfasserin  |4 aut 
700 1 |a Kijne, Jan  |e verfasserin  |4 aut 
700 1 |a Bisseling, Ton  |e verfasserin  |4 aut 
700 1 |a Franssen, Henk  |e verfasserin  |4 aut 
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