ArticleThe Plant cell1998
Arabidopsis gls mutants and distinct Fd-GOGAT genes. Implications for photorespiration and primary nitrogen assimilation.
Article in The Plant cell, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 77 papers.
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Who cites it
77 citing papers in PubMed, 225 citations in OpenAlex.
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- Changes in the nitrate assimilation pathway serve as a component of maize stress response to competition cues.Frontiers in plant science · 2025Article
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- FERONIA regulates salt tolerance in Arabidopsis by controlling photorespiratory flux.The Plant cell · 2024Article
- Amino acids biosynthesis in root hair development: a mini-review.Biochemical Society transactions · 2024Review
- The impact of light and thioredoxins on the plant thiol-disulfide proteome.Plant physiology · 2024Article
- The Role of Glutamine Synthetase (GS) and Glutamate Synthase (GOGAT) in the Improvement of Nitrogen Use Efficiency in Cereals.Biomolecules · 2023Review
- Nitrogen Journey in Plants: From Uptake to Metabolism, Stress Response, and Microbe Interaction.Biomolecules · 2023Review
- Ammonium-nitrate mixtures dominated by NHFrontiers in plant science · 2023Article
- The Arabidopsis glutamine synthetase2 mutants (gln2-1 and gln2-2) do not have abnormal phenotypes.Plant physiology · 2022Article
- New Insight into Aspartate Metabolic Pathways inInternational journal of molecular sciences · 2022Article
- Transcripts related with ammonium use and effects of gibberellin on expressions of the transcripts responding to ammonium in two invasive and nativeFrontiers in plant science · 2022Article
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- Nitrogen Assimilation Related Genes inPlants (Basel, Switzerland) · 2021Article
- Overexpression of thioredoxin m in chloroplasts alters carbon and nitrogen partitioning in tobacco.Journal of experimental botany · 2021Article
- Using natural variation to understand plant responses to iron availability.Journal of experimental botany · 2021Article
17 more citing papers are in PubMed but not listed here.
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
Abstract
Ferredoxin-dependent glutamate synthase (Fd-GOGAT) plays a major role in photorespiration in Arabidopsis, as has been determined by the characterization of mutants deficient in Fd-GOGAT enzyme activity (gls). Despite genetic evidence for a single Fd-GOGAT locus and gene, we discovered that Arabidopsis contains two expressed genes for Fd-GOGAT (GLU1 and GLU2). Physical and genetic mapping of the gls1 locus and GLU genes indicates that GLU1 is linked to the gls1 locus, whereas GLU2 maps to a different chromosome. Contrasting patterns of GLU1 and GLU2 expression explain why a mutation in only one of the two genes for Fd-GOGAT leads to a photorespiratory phenotype in the gls1 mutants. GLU1 mRNA was expressed at the highest levels in leaves, and its mRNA levels were specifically induced by light or sucrose. In contrast, GLU2 mRNA was expressed at lower constitutive levels in leaves and preferentially accumulated in roots. Although these results suggest a major role for GLU1 in photorespiration, the sucrose induction of GLU1 mRNA in leaves also suggests a role in primary nitrogen assimilation. This possibility is supported by the finding that chlorophyll levels of a gls mutant are significantly lower than those of the wild type when grown under conditions that suppress photorespiration. Both the mutant analysis and gene regulation studies suggest that GLU1 plays a major role in photorespiration and also plays a role in primary nitrogen assimilation in leaves, whereas the GLU2 gene may play a major role in primary nitrogen assimilation in roots.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.