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  Antisense Inhibition of the 2-Oxoglutarate Dehydrogenase Complex in Tomato Demonstrates Its Importance for Plant Respiration and during Leaf Senescence and Fruit Maturation

Araujo, W. L., Tohge, T., Osorio, S., Lohse, M., Balbo, I., Krahnert, I., et al. (2012). Antisense Inhibition of the 2-Oxoglutarate Dehydrogenase Complex in Tomato Demonstrates Its Importance for Plant Respiration and during Leaf Senescence and Fruit Maturation. The Plant Cell, 24(6), 2328-2351. doi:10.1105/tpc.112.099002.

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Araujo-2012-Antisense Inhibition.pdf (beliebiger Volltext), 2MB
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Araujo-2012-Antisense Inhibition.pdf
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Araujo, W. L.1, Autor           
Tohge, T.1, Autor           
Osorio, S.1, Autor           
Lohse, M.2, Autor           
Balbo, I.1, Autor           
Krahnert, I.1, Autor           
Sienkiewicz-Porzucek, A.1, Autor           
Usadel, B.2, Autor           
Nunes-Nesi, A.1, Autor           
Fernie, A. R.1, Autor           
Affiliations:
1Central Metabolism, Department Willmitzer, Max Planck Institute of Molecular Plant Physiology, Max Planck Society, ou_1753339              
2Integrative Carbon Biology, Department Stitt, Max Planck Institute of Molecular Plant Physiology, Max Planck Society, ou_1753329              

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Schlagwörter: tricarboxylic-acid cycle mitochondrial electron-transport dark-induced senescence iron-sulfur subunit nicotiana-sylvestris abscisic-acid nitrogen assimilation illuminated leaves gibberellic-acid isocitrate dehydrogenases
 Zusammenfassung: Transgenic tomato (Solanum lycopersicum) plants expressing a fragment of the gene encoding the E1 subunit of the 2-oxoglutarate dehydrogenase complex in the antisense orientation and exhibiting substantial reductions in the activity of this enzyme exhibit a considerably reduced rate of respiration. They were, however, characterized by largely unaltered photosynthetic rates and fruit yields but restricted leaf, stem, and root growth. These lines displayed markedly altered metabolic profiles, including changes in tricarboxylic acid cycle intermediates and in the majority of the amino acids but unaltered pyridine nucleotide content both in leaves and during the progression of fruit ripening. Moreover, they displayed a generally accelerated development exhibiting early flowering, accelerated fruit ripening, and a markedly earlier onset of leaf senescence. In addition, transcript and selective hormone profiling of gibberellins and abscisic acid revealed changes only in the former coupled to changes in transcripts encoding enzymes of gibberellin biosynthesis. The data obtained are discussed in the context of the importance of this enzyme in both photosynthetic and respiratory metabolism as well as in programs of plant development connected to carbon-nitrogen interactions.

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Sprache(n): eng - English
 Datum: 2012-07-042012
 Publikationsstatus: Erschienen
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 Identifikatoren: ISI: ISI:000306919300011
DOI: 10.1105/tpc.112.099002
ISSN: 1532-298X (Electronic)1040-4651 (Linking)
URI: ://000306919300011http://www.plantcell.org/content/24/6/2328.full.pdf
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Titel: The Plant Cell
  Kurztitel : Plant C
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Rockville : American Society of Plant Physiologists
Seiten: - Band / Heft: 24 (6) Artikelnummer: - Start- / Endseite: 2328 - 2351 Identifikator: Anderer: 1532-298X
CoNE: https://pure.mpg.de/cone/journals/resource/1532-298X