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Reference Detail
| Reference | ||
|---|---|---|
| Author | Zhang S., Zhu L., Shen C., Ji Z., Zhang H., Zhang T., Li Y., Yu J., Yang N., He Y., Tian Y., Wu K., Wu J., Harberd N.P., Zhao Y., Fu X., Wang S., Li S. | |
| Title | Natural allelic variation in a modulator of auxin homeostasis improves grain yield and nitrogen use efficiency in rice. | |
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Abstract: The external application of nitrogen (N) fertilizers is an important practice for increasing crop production. However, the excessive use of fertilizers significantly increases production costs and causes environmental problems, making the improvement of crop N-use efficiency (NUE) crucial for sustainable agriculture in the future. Here we show that the rice (Oryza sativa) NUE quantitative trait locus DULL NITROGEN RESPONSE1 (qDNR1), which is involved in auxin homeostasis, reflects the differences in nitrate (NO3-) uptake, N assimilation, and yield enhancement between indica and japonica rice varieties. Rice plants carrying the DNR1indica allele exhibit reduced N-responsive transcription and protein abundance of DNR1. This, in turn, promotes auxin biosynthesis, thereby inducing AUXIN RESPONSE FACTOR-mediated activation of NO3- transporter and N-metabolism genes, resulting in improved NUE and grain yield. We also show that a loss-of-function mutation at the DNR1 locus is associated with increased N uptake and assimilation, resulting in improved rice yield under moderate levels of N fertilizer input. Therefore, modulating the DNR1-mediated auxin response represents a promising strategy for achieving environmentally sustainable improvements in rice yield. |
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| Journal | Plant Cell | |
| Country | China | |
| Volume | ||
| Pages | ||
| Year | 2020 | |
| PubMed ID | 33955496 | |
| PubMed Central ID | - | |
| DOI | 10.1093/plcell/koaa037 | |
| URL | - | |
| Relation | ||
| Gene | ARF16 ARF17 ARF24 ARF6A ARF6B ARF7A BTA3 D3 DNR1 FC1 HTNE NPF6.5 NRT2.4 WFP _ | |
| INSD | - | |
| Strain | Wild Core Collection | - |
| Induced Mutation Lines(NIG Collection) | - | |
| Sterile Seed Strain | - | |
|
Lethal Embryo Mutantion Strain |
- | |
|
Stages in Each Organ - Muant Lines (Gene) |
- | |
| Cultivated Varieties(NIG Collection) | - | |
| Stages in Each Organ | - | |
