PMID: 11912232Mar 26, 2002Paper

Molecular and enzymatic analysis of ammonium assimilation in woody plants

Journal of Experimental Botany
María Fernanda SuárezFrancisco M Cánovas

Abstract

Ammonium is assimilated into amino acids through the sequential action of glutamine synthetase (GS) and glutamate synthase (GOGAT) enzymes. This metabolic pathway is driven by energy, reducing power and requires the net supply of 2-oxoglutarate that can be provided by the reaction catalysed by isocitrate dehydrogenase (IDH). Most studies on the biochemistry and molecular biology of N-assimilating enzymes have been carried out on annual plant species and the available information on woody models is far more limited. This is in spite of their economic and ecological importance and the fact that nitrogen is a common limiting factor for tree growth. GS, GOGAT and IDH enzymes have been purified from several woody species and their kinetic and molecular properties determined. A number of cDNA clones have also been isolated and characterized. Although the enzymes are remarkably well conserved along the evolutionary scale, major differences have been found in their compartmentation within the cell between angiosperms and conifers, suggesting possible adaptations to specific functional roles. The analysis of the gene expression patterns in a variety of biological situations such as changes in N nutrition, development, biotic or abiotic ...Continue Reading

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Citations

Aug 27, 2011·BMC Plant Biology·Vanessa Castro-RodríguezFrancisco M Cánovas
Feb 24, 2009·Plant Physiology and Biochemistry : PPB·Carla CaputoAtilio J Barneix
Jul 27, 2004·The Plant Journal : for Cell and Molecular Biology·Josefa Gómez-MaldonadoMalcolm M Campbell
May 9, 2009·The New Phytologist·Stéphanie M Bernard, Dimah Z Habash
Mar 6, 2007·The New Phytologist·Jérémy CouturierMichel Chalot
Apr 21, 2006·The Plant Journal : for Cell and Molecular Biology·Fernando de la TorreFrancisco M Cánovas
Jan 6, 2007·The New Phytologist·P DluzniewskaH Rennenberg
Jun 13, 2008·The Plant Journal : for Cell and Molecular Biology·Marina Rueda-LópezConcepción Avila
Mar 5, 2013·The Plant Journal : for Cell and Molecular Biology·Blanca Craven-BartleConcepción Avila
Mar 23, 2011·Plant Science : an International Journal of Experimental Plant Biology·Annick BertrandJulie Dionne
Mar 23, 2012·Annals of Botany·Dalila TrupianoGabriella S Scippa
Jan 21, 2018·BMC Genomics·Ángel García-GutiérrezConcepción Ávila
May 30, 2007·Proteomics·Paola Alejandra Fiorani CeledonCarlos Alberto Labate
Sep 7, 2005·Photosynthesis Research·Francisco R CantónFrancisco M Cánovas
Sep 7, 2005·Journal of Experimental Botany·Andrew R RobinsonShawn D Mansfield
Jul 23, 2016·Frontiers in Microbiology·María Agustina Domínguez-MartínJosé M García-Fernández
Jun 28, 2018·Journal of Plant Research·Shin-Ichi MiyazawaTakayuki Kawahara
Oct 1, 2004·The New Phytologist·Zhong Ping JingFrancisco M Cánovas

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