ArticleRice (New York, N.Y.)2018
Rice nitrate transporter OsNPF7.2 positively regulates tiller number and grain yield.
Article in Rice (New York, N.Y.), 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers.
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Who cites it
45 citing papers in PubMed, 141 citations in OpenAlex.
- Aus rice: a source of promising donor genotypes for low N tolerance under field conditions.Scientific reports · 2026Article
- Functional characterization of NRT1/PTR FAMILY transporters: looking for a needle in a haystack.The New phytologist · 2026Review
- Optimized Carbon-Nitrogen Fertilization Boosts Fragrant Rice (Plants (Basel, Switzerland) · 2025Article
- Regulatory network of ammonium and nitrate uptake and utilization in rice.Frontiers in plant science · 2025Review
- Blocking miR396 activity by overexpression MIM396 improved switchgrass tiller number and biomass yield.Biotechnology for biofuels and bioproducts · 2024Article
- Uncovering the Genomic Regions Associated with Yield Maintenance in Rice Under Drought Stress Using an Integrated Meta-Analysis Approach.Rice (New York, N.Y.) · 2024Article
- Optimum seeding density and seedling age for the outstanding yield performance of Japonica rice using crop straw boards for seedling cultivation.Frontiers in plant science · 2024Article
- The role of strigolactone analog (GR24) in endogenous hormone metabolism and hormone-related gene expression in tobacco axillary buds.Plant cell reports · 2023Article
- Nutritional and tissue-specific regulation of cytochrome P450 CYP711A MAX1 homologues and strigolactone biosynthesis in wheat.Journal of experimental botany · 2023Article
- OsαCA1 Affects Photosynthesis, Yield Potential, and Water Use Efficiency in Rice.International journal of molecular sciences · 2023Article
- Molecular characterization reveals that OsSAPK3 improves drought tolerance and grain yield in rice.BMC plant biology · 2023Article
- Unlocking the potentials of nitrate transporters at improving plant nitrogen use efficiency.Frontiers in plant science · 2023Review
- Breeding for Higher Yields of Wheat and Rice through Modifying Nitrogen Metabolism.Plants (Basel, Switzerland) · 2022Review
- Genome-wide association study identifies candidate genes and favorable haplotypes for seed yield inMolecular breeding : new strategies in plant improvement · 2022Article
- Foliar Application ofPlants (Basel, Switzerland) · 2022Article
- Transporters and transcription factors gene families involved in improving nitrogen use efficiency (NUE) and assimilation in rice (Oryza sativa L.).Transgenic research · 2022Review
- Melatonin Mediates Axillary Bud Outgrowth by Improving Nitrogen Assimilation and Transport in Rice.Frontiers in plant science · 2022Article
- Is strigolactone signaling a key player in regulating tiller formation in response to nitrogen?Frontiers in plant science · 2022Article
- The Role of Membrane Transporters in Plant Growth and Development, and Abiotic Stress Tolerance.International journal of molecular sciences · 2021Review
- Molecular Regulatory Networks for Improving Nitrogen Use Efficiency in Rice.International journal of molecular sciences · 2021Review
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Authors and funding
7 authors at 2 institutions in 1 country.
Funding
Abstract
backgroundRice tiller number is one of the most important factors that determine grain yield, while nitrogen is essential for the crop growth and development, especially for tiller formation. Genes involved in nitrogen use efficiency processes have been identified in the previous studies, however, only a small number of these genes have been found to improve grain yield by promoting tillering.
resultsWe constructed over-expression (OX) lines and RNA-interference (Ri) lines, and selected a mutant of OsNPF7.2, a low-affinity nitrate transporter. Our analyses showed that rice tiller number and grain yield were significantly increased in OX lines, whereas Ri lines and mutant osnpf7.2 had fewer tiller number and lower grain yield. Under different nitrate concentrations, tiller buds grew faster in OX lines than in WT, but they grew slower in Ri lines and mutant osnpf7.2. These results indicated that altered expression of OsNPF7.2 plays a significant role in the control of tiller bud growth and regulation of tillering. Elevated expression of OsNPF7.2 also improved root length, root number, fresh weight, and dry weight. However, reduced expression of OsNPF7.2 had the opposite result on these characters. OsNPF7.2 OX lines showed more significantly enhanced influx of nitrate and had a higher nitrate concentration than WT. The levels of gene transcripts related to cytokinin pathway and cell cycle in tiller bud, and cytokinins concentration in tiller basal portion were higher in OX lines than that in WT, suggesting that altered expression of OsNPF7.2 controlled tiller bud growth and root development by regulating cytokinins content and cell cycle in plant cells. Altered expression of OsNPF7.2 also was responsible for the change in expression of the genes involved in strigolactone pathway, such as D27, D17, D10, Os900, Os1400, D14, D3, and OsFC1.
conclusionOur results suggested that OsNPF7.2 is a positive regulator of nitrate influx and concentration, and that it also regulates cell division in tiller bud and alters expression of genes involved in cytokinin and strigolactone pathways, resulting in the control over rice tiller number. Since elevated expression of OsNPF7.2 is capable of improving rice grain yield, this gene might be applied to high-yield rice breeding.
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