ArticlePlant biotechnology journal2025
9311 allele of OsNAR2.2 enhances nitrate transport to improve rice yield and nitrogen use efficiency.
Article in Plant biotechnology journal, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Aus rice: a source of promising donor genotypes for low N tolerance under field conditions.Scientific reports · 2026Article
- Identification of Gene Regulatory Network for Nitrogen-Promoted Tiller Regrowth in Perennial Rice.Rice (New York, N.Y.) · 2026Article
- The Reorganization of Rice Rhizosphere Microbial Communities Driven by Nitrogen Utilization Efficiency and the Regulatory Mechanism of Soil Nitrogen Cycling.Microorganisms · 2025Article
- Regulatory network of ammonium and nitrate uptake and utilization in rice.Frontiers in plant science · 2025Review
- Integrated QTL mapping and candidate gene analysis for yield-related traits and salt tolerance in a rice RIL population.Frontiers in plant science · 2025Article
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Authors and funding
18 authors.
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Abstract
Improving nitrogen use efficiency (NUE) in rice is a requirement for future sustainable agricultural production. However, key factors and regulatory networks involved in NUE remain unclear. Here, QTL analysis, fine-mapping and functional validation demonstrated that qCR4 encodes a putative high-affinity nitrate transporter-activating protein 2.2 (OsNAR2.2). Located in the endoplasmic reticulum (ER), OsNAR2.2 was confirmed to regulate nitrate transport from root-to-shoot and control panicle number, grain yield and NUE in rice. RNA-seq and RT-qPCR revealed that OsNAR2.2 modulates nitrogen utilization by altering the expressions of some nitrogen metabolism-related genes and auxin signal-related genes. Furthermore, the 9311 allele of OsNAR2.2 significantly enhanced panicle number, grain yield and NUE, which provides a potential target for rice yield and NUE improvement.
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