ArticlePlant physiology2008
Oxidative pentose phosphate pathway-dependent sugar sensing as a mechanism for regulation of root ion transporters by photosynthesis.
Article in Plant physiology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 69 papers.
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Who cites it
69 citing papers in PubMed, 187 citations in OpenAlex.
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- Functional analyses of the NRT2 family of nitrate transporters inFrontiers in plant science · 2024Review
- Prioritizing strategies for wheat biofortification: Inspiration from underutilized species.Heliyon · 2023Review
- Soil Contamination with Europium Induces Reduced Oxidative Damage inPlants (Basel, Switzerland) · 2023Article
- Local phytochrome signalling limits root growth in light by repressing auxin biosynthesis.Journal of experimental botany · 2023Article
- Special Issue "Sugar Transport, Metabolism and Signaling in Plants".International journal of molecular sciences · 2023Article
- Control of the rhizobium-legume symbiosis by the plant nitrogen demand is tightly integrated at the whole plant level and requires inter-organ systemic signaling.Frontiers in plant science · 2023Review
- Glucose-6-Phosphate Dehydrogenases: The Hidden Players of Plant Physiology.International journal of molecular sciences · 2022Review
- Carbon Footprint Management by Agricultural Practices.Biology · 2022Review
- Energy status-promoted growth and development of Arabidopsis require copper deficiency response transcriptional regulator SPL7.The Plant cell · 2022Article
- The rice transcription factor Nhd1 regulates root growth and nitrogen uptake by activating nitrogen transporters.Plant physiology · 2022Article
- Reduction in Phosphoribulokinase Amount and Re-Routing Metabolism inInternational journal of molecular sciences · 2022Article
- Nitrate Uptake and Use Efficiency: Pros and Cons of Chloride Interference in the Vegetable Crops.Frontiers in plant science · 2022Review
- Biochemical and Proteomic Changes in the Roots of M4 Grapevine Rootstock in Response to Nitrate Availability.Plants (Basel, Switzerland) · 2021Article
9 more citing papers are in PubMed but not listed here.
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Authors and funding
6 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Root ion transport systems are regulated by light and/or sugars, but the signaling mechanisms are unknown. We showed previously that induction of the NRT2.1 NO(3)(-) transporter gene by sugars was dependent on carbon metabolism downstream hexokinase (HXK) in glycolysis. To gain further insights on this signaling pathway and to explore more systematically the mechanisms coordinating root nutrient uptake with photosynthesis, we studied the regulation of 19 light-/sugar-induced ion transporter genes. A combination of sugar, sugar analogs, light, and CO(2) treatments provided evidence that these genes are not regulated by a common mechanism and unraveled at least four different signaling pathways involved: regulation by light per se, by HXK-dependent sugar sensing, and by sugar sensing upstream or downstream HXK, respectively. More specific investigation of sugar-sensing downstream HXK, using NRT2.1 and NRT1.1 NO(3)(-) transporter genes as models, highlighted a correlation between expression of these genes and the concentration of glucose-6-P in the roots. Furthermore, the phosphogluconate dehydrogenase inhibitor 6-aminonicotinamide almost completely prevented induction of NRT2.1 and NRT1.1 by sucrose, indicating that glucose-6-P metabolization within the oxidative pentose phosphate pathway is required for generating the sugar signal. Out of the 19 genes investigated, most of those belonging to the NO(3)(-), NH(4)(+), and SO(4)(2-) transporter families were regulated like NRT2.1 and NRT1.1. These data suggest that a yet-unidentified oxidative pentose phosphate pathway-dependent sugar-sensing pathway governs the regulation of root nitrogen and sulfur acquisition by the carbon status of the plant to coordinate the availability of these three elements for amino acid synthesis.
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