ArticleJournal of experimental botany2011
Increased glutamine in leaves of poplar transgenic with pine GS1a caused greater anthranilate synthetase α-subunit (ASA1) transcript and protein abundances: an auxin-related mechanism for enhanced growth in GS transgenics?
Article in Journal of experimental botany, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed, 31 citations in OpenAlex.
- Glutamine Synthetase and Glutamate Synthase Family Perform Diverse Physiological Functions in Exogenous Hormones and Abiotic Stress Responses inPlants (Basel, Switzerland) · 2024Article
- Hormonal Status of Transgenic Birch with a Pine Glutamine Synthetase Gene during Rooting In Vitro and Budburst Outdoors.Biomolecules · 2023Article
- Interactions with microbial consortia have variable effects in organic carbon and production of exometabolites among genotypes ofPlant direct · 2023Article
- Phytochrome interacting factor 3 regulates pollen mitotic division through auxin signalling and sugar metabolism pathways in tomato.The New phytologist · 2022Article
- Review
- Integrated transcript and metabolite profiling reveals coordination between biomass size and nitrogen metabolism inPlant biotechnology (Tokyo, Japan) · 2021Article
- Effect of Glutamine Synthetase Gene Overexpression in Birch (Betula pubescens) Plants on Auxin Content and Rooting in vitro.Doklady. Biochemistry and biophysics · 2018Article
- Nitrogen Metabolism and Biomass Production in Forest Trees.Frontiers in plant science · 2018Article
- The Effect of PoplarFrontiers in plant science · 2018Article
- Members of BTB Gene Family of Scaffold Proteins Suppress Nitrate Uptake and Nitrogen Use Efficiency.Plant physiology · 2016Article
- Oil palm natural diversity and the potential for yield improvement.Frontiers in plant science · 2015Article
- Article
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Authors and funding
4 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The initial reaction in the pathway leading to the production of indole-3-acetic acid (IAA) in plants is the reaction between chorismate and glutamine to produce anthranilate, catalysed by the enzyme anthranilate synthase (ASA; EC 4.1.3.27). Compared with non-transgenic controls, leaves of transgenic poplar with ectopic expression of the pine cytosolic glutamine synthetase (GS1a; EC 6.3.1.2) produced significantly greater glutamine and significantly enhanced ASA α-subunit (ASA1) transcript and protein (approximately 130% and 120% higher than in the untransformed controls, respectively). Similarly, tobacco leaves fed with 30 mM glutamine and 2 mM chorismate showed enhanced ASA1 transcript and protein (175% and 90% higher than controls, respectively). Furthermore, free IAA was significantly elevated both in leaves of GS1a transgenic poplar and in tobacco leaves fed with 30 mM glutamine and 2 mM chorismate. These results indicated that enhanced cellular glutamine may account for the enhanced growth in GS transgenic poplars through the regulation of auxin biosynthesis.
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