ArticlePlant physiology2007
Dissection of the AtNRT2.1:AtNRT2.2 inducible high-affinity nitrate transporter gene cluster.
Article in Plant physiology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 142 papers.
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Who cites it
142 citing papers in PubMed, 361 citations in OpenAlex.
- Microbial volatile organic compound enhances Arabidopsis growth through activation of nitrate and ammonium transport.Journal of experimental botany · 2026Article
- Effects of OsNRT2.3b transgenosis on lettuce antioxidant capacity and nitrogen metabolism under low nitrogen.PloS one · 2026Article
- NRT1.1 as central signaling hub orchestrating plant growth and stress trade-offs.Frontiers in plant science · 2026Review
- Spinach SoNRT3 Interacts with SoNRT2a to Improve Low-Nitrogen Tolerance via Nitrate Uptake and Root Growth.Plants (Basel, Switzerland) · 2025Article
- Rapeseed transcription factor BnaC9bHLH35 promotes root growth and improves nitrogen use efficiency under low nitrate conditions.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2025Article
- BdNRT2A and BdNRT3.2 Are the Major Components of the High-Affinity Nitrate Transport System inPlant direct · 2025Article
- Enhancing Crop Nitrogen Efficiency: The Role of Mixed Nitrate and Ammonium Supply in Plant Growth and Development.Biology · 2025Review
- Characterization of nitrate use efficiency in tea plant (Horticulture research · 2025Article
- Genome-Wide Identification and Expression Analysis of PkNRT Gene Family in Korean Pine (Plants (Basel, Switzerland) · 2025Article
- Mechanism of nodulation and nitrogen fixation in Caucasian clover (Frontiers in genetics · 2025Article
- Genome-wide identification of high-affinity nitrate transporter 2 (NRT2) gene family under phytohormones and abiotic stresses in alfalfa (Medicago sativa).Scientific reports · 2024Article
- Identification and Characterization of Key Genes for Nitrogen Utilization fromInternational journal of molecular sciences · 2024Article
- The clock-associated LUX ARRHYTHMO regulates high-affinity nitrate transport in Arabidopsis roots.The Plant journal : for cell and molecular biology · 2024Article
- The CaGenes · 2024Article
- Genome-Wide Identification and Expression Analysis of Nitrate Transporter (NRT) Gene Family inGenes · 2024Article
- Investigation of morpho-physiolgical traits and gene expression in barley under nitrogen deficiency.Scientific reports · 2024Article
- Functional analyses of the NRT2 family of nitrate transporters inFrontiers in plant science · 2024Review
- The Functional Diversity of the High-Affinity Nitrate Transporter Gene Family in Hexaploid Wheat: Insights from Distinct Expression Profiles.International journal of molecular sciences · 2023Article
- Transcription factor module NLP-NIGT1 fine-tunes NITRATE TRANSPORTER2.1 expression.Plant physiology · 2023Article
- Research Progress on the Effect of Nitrogen on Rapeseed between Seed Yield and Oil Content and Its Regulation Mechanism.International journal of molecular sciences · 2023Review
82 more citing papers are in PubMed but not listed here.
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Authors and funding
6 authors at 2 institutions in 2 countries.
Funding
Abstract
Using a new Arabidopsis (Arabidopsis thaliana) mutant (Atnrt2.1-nrt2.2) we confirm that concomitant disruption of NRT2.1 and NRT2.2 reduces inducible high-affinity transport system (IHATS) by up to 80%, whereas the constitutive high-affinity transport system (CHATS) was reduced by 30%. Nitrate influx via the low-affinity transport system (LATS) was unaffected. Shoot-to-root ratios were significantly reduced compared to wild-type plants, the major effect being upon shoot growth. In another mutant uniquely disrupted in NRT2.1 (Atnrt2.1), IHATS was reduced by up to 72%, whereas neither the CHATS nor the LATS fluxes were significantly reduced. Disruption of NRT2.1 in Atnrt2.1 caused a consistent and significant reduction of shoot-to-root ratios. IHATS influx and shoot-to-root ratios were restored to wild-type values when Atnrt2.1-nrt2.2 was transformed with a NRT2.1 cDNA isolated from Arabidopsis. Disruption of NRT2.2 in Atnrt2.2 reduced IHATS by 19% and this reduction was statistically significant only at 6 h after resupply of nitrate to nitrogen-deprived plants. Atnrt2.2 showed no significant reduction of CHATS, LATS, or shoot-to-root ratios. These results define NRT2.1 as the major contributor to IHATS. Nevertheless, when maintained on agar containing 0.25 mm KNO(3) as the sole nitrogen source, Atnrt2.1-nrt2.2 consistently exhibited greater stress and growth reduction than Atnrt2.1. Evidence from real-time PCR revealed that NRT2.2 transcript abundance was increased almost 3-fold in Atnrt2.1. These findings suggest that NRT2.2 normally makes only a small contribution to IHATS, but when NRT2.1 is lost, this contribution increases, resulting in a partial compensation.
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Registered trials
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.