Skip to main content
Log in

OsNAC74 affects grain protein content and various biological traits by regulating OsAAP6 expression in rice

  • Published:
Molecular Breeding Aims and scope Submit manuscript

Abstract

The grain protein content is an important quality trait in cereals, and the expression level of the OsAAP6 can significantly affect the grain protein content in rice. Through site-directed mutagenesis, we found that the position from −7 to −12 bp upstream of the transcription start site of the OsAAP6 was the functional variation site. By using the yeast single hybrid test, point-to-point in yeast, and the local surface plasmon resonance test, the OsNAC74 was screened and verified to be a regulator upstream of OsAAP6. The OsNAC74 is a constitutively expressed gene whose product is located on the cell membrane. The OsAAP6 and the genes related to the seed storage in the Osnac74 mutants were downregulated, and grain protein content was significantly reduced. In addition, OsNAC74 had a significant impact on quality traits such as grain chalkiness and gel consistency in rice. Although the Osnac74 mutant seeds were relatively small, the individual plant yield was not decreased. Therefore, OsNAC74 is an important regulatory factor with multiple biological functions. This study provides important information for the later use of OsNAC74 gene for molecular design and breeding in rice.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8

Similar content being viewed by others

Data availability

Not applicable.

References

Download references

Funding

This work was financially supported by the National Natural Science Foundation of China (U2004141, 31801332), Key Project of Science and Technology in Henan Province (222102110141; 222102110115; 212102110249), Xinyang Innovation Project (20210007), Graduate Research Innovation Fund Project of XYNU (2022KYJJ066, 2022KYJJ068), and Scientific Research Fund Project of XYNU (2022-DXS-131).

Author information

Authors and Affiliations

Authors

Contributions

Bo Peng and Quanxiu Wang designed the experiments. Bo Peng, Xiaoyu Sun, and Xiayu Tian carried out most of the experiments and analyzed the data. Dongyan Kong and Lulu He contributed to the experiments and formal analysis. Juan Peng and Yan Liu contributed to the experiments. Gui-Ying Guo, Yanfang Sun, and Ruihua Pang contributed to the experiments. Wei Zhou and Jinhui Zhao contributed to the experiments and analyzed the data. Bo Peng and Quanxiu Wang wrote the manuscript.

Corresponding authors

Correspondence to Bo Peng or Quanxiu Wang.

Ethics declarations

Ethics approval and consent to participate

Not applicable.

Consent for publication

Not applicable.

Conflict of interest

The authors declare no competing interests.

Additional information

Publisher’s note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Supplementary information

ESM 1

(DOCX 2060 kb)

Rights and permissions

Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Peng, B., Sun, X., Tian, X. et al. OsNAC74 affects grain protein content and various biological traits by regulating OsAAP6 expression in rice. Mol Breeding 43, 87 (2023). https://doi.org/10.1007/s11032-023-01433-w

Download citation

  • Received:

  • Accepted:

  • Published:

  • DOI: https://doi.org/10.1007/s11032-023-01433-w

Keywords

Navigation