ArticlePlant cell reports2022
Glyoxalase I activity affects Arabidopsis sensitivity to ammonium nutrition.
Article in Plant cell reports, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 13 citations in OpenAlex.
- Cysteine-mediated modulation of the glyoxalase system and HSP90 proteins enhances high-temperature stress tolerance inPhysiology and molecular biology of plants : an international journal of functional plant biology · 2026Article
- Augmenting pH Confers toPlants (Basel, Switzerland) · 2026Article
- Polyphenol-based modulation of the Glo1-Nrf2-RAGE axis in diabetes and neurodegeneration: mechanistic evidence, translational constraints, and critical appraisal.Frontiers in pharmacology · 2026Review
- Arabidopsis GLYI4 Reveals Intriguing Insights into the JA Signaling Pathway and Plant Defense.International journal of molecular sciences · 2024Article
- Genome-Wide Analysis and Expression Profiling of Glyoxalase Gene Families Under Abiotic Stresses in Cucumber (International journal of molecular sciences · 2024Article
- Ammonium treatment inhibits cell cycle activity and induces nuclei endopolyploidization in Arabidopsis thaliana.Planta · 2024Article
- Article
- Genome-wide analysis and expression profiling of glyoxalase gene families in oat (Frontiers in plant science · 2023Article
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Authors and funding
5 authors at 3 institutions in 3 countries.
Funding
Abstract
key messageElevated methylglyoxal levels contribute to ammonium-induced growth disorders in Arabidopsis thaliana. Methylglyoxal detoxification pathway limitation, mainly the glyoxalase I activity, leads to enhanced sensitivity of plants to ammonium nutrition. Ammonium applied to plants as the exclusive source of nitrogen often triggers multiple phenotypic effects, with severe growth inhibition being the most prominent symptom. Glycolytic flux increase, leading to overproduction of its toxic by-product methylglyoxal (MG), is one of the major metabolic consequences of long-term ammonium nutrition. This study aimed to evaluate the influence of MG metabolism on ammonium-dependent growth restriction in Arabidopsis thaliana plants. As the level of MG in plant cells is maintained by the glyoxalase (GLX) system, we analyzed MG-related metabolism in plants with a dysfunctional glyoxalase pathway. We report that MG detoxification, based on glutathione-dependent glyoxalases, is crucial for plants exposed to ammonium nutrition, and its essential role in ammonium sensitivity relays on glyoxalase I (GLXI) activity. Our results indicated that the accumulation of MG-derived advanced glycation end products significantly contributes to the incidence of ammonium toxicity symptoms. Using A. thaliana frostbite1 as a model plant that overcomes growth repression on ammonium, we have shown that its resistance to enhanced MG levels is based on increased GLXI activity and tolerance to elevated MG-derived advanced glycation end-product (MAGE) levels. Furthermore, our results show that glyoxalase pathway activity strongly affects cellular antioxidative systems. Under stress conditions, the disruption of the MG detoxification pathway limits the functioning of antioxidant defense. However, under optimal growth conditions, a defect in the MG detoxification route results in the activation of antioxidative systems.
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