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  Deciphering Transcriptional and Metabolic Networks Associated with Lysine Metabolism during Arabidopsis Seed Development

Angelovici, R., Fait, A., Zhu, X. H., Szymanski, J., Feldmesser, E., Fernie, A. R., et al. (2009). Deciphering Transcriptional and Metabolic Networks Associated with Lysine Metabolism during Arabidopsis Seed Development. Plant Physiology, 151(4), 2058-2072. doi:10.1104/pp.109.145631.

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Datensatz-Permalink: http://hdl.handle.net/11858/00-001M-0000-0014-263D-A Versions-Permalink: http://hdl.handle.net/11858/00-001M-0000-0019-8476-6
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 Urheber:
Angelovici, R.1, Autor
Fait, A.2, Autor              
Zhu, X. H.1, Autor
Szymanski, J.3, Autor              
Feldmesser, E.1, Autor
Fernie, A. R.2, Autor              
Galili, G.1, Autor
Affiliations:
1External Organizations, escidoc:persistent22              
2Central Metabolism, Department Willmitzer, Max Planck Institute of Molecular Plant Physiology, Max Planck Society, escidoc:1753339              
3Small Molecules, Department Willmitzer, Max Planck Institute of Molecular Plant Physiology, Max Planck Society, escidoc:1753340              

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Schlagwörter: gas-chromatography amino-acids threonine deaminase alternative oxidase gene-expression tomato plants catabolism system growth photosynthesis
 Zusammenfassung: In order to elucidate transcriptional and metabolic networks associated with lysine (Lys) metabolism, we utilized developing Arabidopsis (Arabidopsis thaliana) seeds as a system in which Lys synthesis could be stimulated developmentally without application of chemicals and coupled this to a T-DNA insertion knockout mutation impaired in Lys catabolism. This seed-specific metabolic perturbation stimulated Lys accumulation starting from the initiation of storage reserve accumulation. Our results revealed that the response of seed metabolism to the inducible alteration of Lys metabolism was relatively minor; however, that which was observable operated in a modular manner. They also demonstrated that Lys metabolism is strongly associated with the operation of the tricarboxylic acid cycle while largely disconnected from other metabolic networks. In contrast, the inducible alteration of Lys metabolism was strongly associated with gene networks, stimulating the expression of hundreds of genes controlling anabolic processes that are associated with plant performance and vigor while suppressing a small number of genes associated with plant stress interactions. The most pronounced effect of the developmentally inducible alteration of Lys metabolism was an induction of expression of a large set of genes encoding ribosomal proteins as well as genes encoding translation initiation and elongation factors, all of which are associated with protein synthesis. With respect to metabolic regulation, the inducible alteration of Lys metabolism was primarily associated with altered expression of genes belonging to networks of amino acids and sugar metabolism. The combined data are discussed within the context of network interactions both between and within metabolic and transcriptional control systems.

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Sprache(n): eng - Englisch
 Datum: 2009-09-292009
 Publikationsstatus: Im Druck publiziert
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 Ort, Verlag, Ausgabe: -
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 Identifikatoren: ISI: ISI:000272443500031
DOI: 10.1104/pp.109.145631
ISSN: 1532-2548 (Electronic)0032-0889 (Linking)
URI: ://000272443500031http://www.jstor.org/stable/pdfplus/40537640.pdf
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Titel: Plant Physiology
  Andere : Plant Physiol.
Genre der Quelle: Zeitschrift
 Urheber:
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Ort, Verlag, Ausgabe: Bethesda, Md. : American Society of Plant Biologists
Seiten: - Band / Heft: 151 (4) Artikelnummer: - Start- / Endseite: 2058 - 2072 Identifikator: ISSN: 0032-0889
CoNE: http://pubman.mpdl.mpg.de/cone/journals/resource/991042744294438