ArticlePlant molecular biology1994
Root- and shoot-specific responses of individual glutamine synthetase genes of maize to nitrate and ammonium.
Article in Plant molecular biology, 1994. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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Who cites it
15 citing papers in PubMed, 55 citations in OpenAlex.
- Genome-Wide Comprehensive Analysis of the Nitrogen Metabolism Toolbox Reveals Its Evolution and Abiotic Stress Responsiveness in Rice (International journal of molecular sciences · 2022Article
- Proteomic Analysis Reveals the Leaf Color Regulation Mechanism in Chimera Hosta "Gold Standard" Leaves.International journal of molecular sciences · 2016Article
- The glutamine synthetase gene family in Populus.BMC plant biology · 2011Article
- Identification and kinetic characterization of HtDTC, the mitochondrial dicarboxylate-tricarboxylate carrier of Jerusalem artichoke tubers.Journal of bioenergetics and biomembranes · 2006Article
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- Novel expression pattern of cytosolic Gln synthetase in nitrogen-fixing root nodules of the actinorhizal host, Datisca glomerata.Plant physiology · 2004Article
- Constitutive overexpression of cytosolic glutamine synthetase (GS1) gene in transgenic alfalfa demonstrates that GS1 may be regulated at the level of RNA stability and protein turnover.Plant physiology · 2001Article
- Purification and characterization of the reconstitutively active citrate carrier from maize mitochondria.Plant physiology · 1999Article
- Oxidative turnover of soybean root glutamine synthetase. In vitro and in vivo studiesPlant physiology · 1999Article
- A strong constitutive positive element is essential for the ammonium-regulated expression of a soybean gene encoding cytosolic glutamine synthetase.Plant molecular biology · 1999Article
- Down-regulation of specific members of the glutamine synthetase gene family in alfalfa by antisense RNA technology.Plant molecular biology · 1998Article
- Nitrate Acts as a Signal to Induce Organic Acid Metabolism and Repress Starch Metabolism in Tobacco.The Plant cell · 1997Article
- Total Glutamine Synthetase Activity during Soybean Nodule Development Is Controlled at the Level of Transcription and Holoprotein Turnover.Plant physiology · 1996Article
- Characterization of Vitis vinifera L. glutamine synthetase and molecular cloning of cDNAs for the cytosolic enzyme.Plant molecular biology · 1996Article
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Authors and funding
3 authors at 1 institution in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
The responses of the five cytosolic-type glutamine synthetase (GS1) genes of maize to treatment of hydroponically grown seedlings with 10 mM KNO3 or 10 mM NH4Cl were analyzed. Non-coding 3' gene-specific hybridization probes and radioanalytic imaging were used to quantitate individual gene transcript levels in excised roots and shoots before treatment and at selected times after treatment. Genes GS1-1 and GS1-2 exhibited distinct organ-specific responses to treatment with either nitrogen source. The GS1-1 transcript level increased over three-fold in roots, but changed little if any in shoots. In contrast, the GS1-2 transcript level increased over two-fold in shoots, but decreased in roots after treatment. Increased transcript levels were evident at 4 h after treatment with either nitrogen source, with maximum accumulations present at 8 h after treatment with ammonium and at 10-12 h after treatment with nitrate. The GS1-3 gene transcript level showed little or no change after treatment with either nitrogen source. The GS1-4 gene transcript level remained constant in shoots of treated seedlings, whereas in roots, it exhibited relatively minor, but complex responses to these two nitrogen sources. The GS1-5 gene transcript is present in very small amounts in seedlings, making it difficult to analyze its response to metabolites in young plants. These results provide support for the possibility that different cytosolic GS genes of maize play distinct roles in nitrogen metabolism during plant growth and differentiation.
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