Journal article
The indica nitrate reductase gene OsNR2 allele enhances rice yield potential and nitrogen use efficiency
- Abstract:
- The indica and japonica rice (Oryza sativa) subspecies differ in nitrate (NO3-) assimilation capacity and nitrogen (N) use efficiency (NUE). Here, we show that a major component of this difference is conferred by allelic variation at OsNR2, a gene encoding a NADH/NADPH-dependent NO3- reductase (NR). Selection-driven allelic divergence has resulted in variant indica and japonica OsNR2 alleles encoding structurally distinct OsNR2 proteins, with indica OsNR2 exhibiting greater NR activity. Indica OsNR2 also promotes NO3- uptake via feed-forward interaction with OsNRT1.1B, a gene encoding a NO3- uptake transporter. These properties enable indica OsNR2 to confer increased effective tiller number, grain yield and NUE on japonica rice, effects enhanced by interaction with an additionally introgressed indica OsNRT1.1B allele. In consequence, indica OsNR2 provides an important breeding resource for the sustainable increases in japonica rice yields necessary for future global food security.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 1.5MB, Terms of use)
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- Publisher copy:
- 10.1038/s41467-019-13110-8
Authors
- Publisher:
- Springer Nature
- Journal:
- Nature Communications More from this journal
- Volume:
- 10
- Article number:
- 5207
- Publication date:
- 2019-11-15
- Acceptance date:
- 2019-10-16
- DOI:
- EISSN:
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2041-1723
- Pmid:
-
31729387
- Language:
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English
- Keywords:
- Pubs id:
-
pubs:1072418
- UUID:
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uuid:222b0b01-c0e7-4922-b9c3-ab4ba2aff197
- Local pid:
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pubs:1072418
- Source identifiers:
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1072418
- Deposit date:
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2019-11-27
- ARK identifier:
Terms of use
- Copyright date:
- 2019
- Notes:
- Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder.
- Licence:
- CC Attribution (CC BY)
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