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就NH4+-N同化来讲,GDH途径和GS-GOGAT途径各有什么特点,为什么说GS-GOGAT途径是更为普遍和重要的同化方式。
Miflin BJ, Lea PJ (1976) The pathway of nitrogen assimilation in plants. Phytochemistry 15:873–885 Article CAS Google Scholar Mo LY, Wu LH, Tao QN (2001) Research advances on GS/GOGAT cycle in higher plants. Plant Nutrition and Fertilizer Science 7:223–231 Google Scholar Ortego J, ...
Primary and secondary ammonium assimilation is catalyzed by the glutamine synthetase-glutamate synthase (GS-GOGAT) pathway in plants. The Arabidopsis genome contains five cytosolic GS1 genes (GLN1;1 - GLN1;5), one nuclear gene for chloroplastic GS2 isoform (GLN2), two Fd-GOGAT genes (GLU1 ...
Schematic overview of the GS/GOGAT pathway (A) and the diaminopimelate biosynthesis (B).Lorenz, C. ReimerJana, SpuraKerstin, SchmidtHohagenDietmar, Schomburg
The NADH-GOGAT enzyme recycles glutamate and incorporates carbon skeletons into the ammonium assimilation pathway using the organic acid 2-Oxoglutarate as a substrate. Gene pyramiding was then conducted with NAD-IDH and NADH-GDH, two enzymes also involved in the synthesis of 2-Oxoglurate. NADH-...
2.4. Activities of Major Enzymes Involved in the NH4+ Assimilation Pathway in Roots Similar to the quantifications of GS, GOGAT, and NADH-dependent GDH activities in leaves, we further tested and analyzed their activities in the roots for a better understanding on the NH4+ detoxification mechanism...