Skip to main content

Advertisement

Log in

Broomcorn millet (Panicum miliaceum L.) tolerates soil salinity by regulating salt-tolerance mechanism and reshaping rhizosphere microorganisms

  • Research Article
  • Published:
Plant and Soil Aims and scope Submit manuscript

Abstract

Background and Aim

Increased soil salinization caused by natural or human activities is the leading cause of soil degradation. Cultivating salt-tolerant crops is an effective way to cope with soil salinity. However, the key salinity-tolerance traits and regulation mechanisms in salt-tolerant crops and the relevant ecological functions of the microbiome in the rhizosphere remain largely unexplored.

Methods

The phenotypic, physiological, morphological, and molecular responses of salt-sensitive (SS 212) and salt-tolerant (ST 47) broomcorn millet (Panicum miliaceum L.) to salinity were dissected, and the composition and variation in the rhizospheric microorganisms under saline and non-saline conditions were established.

Results

Salinity tolerance was achieved in ST 47 by maintaining Na+/K+ balance and intact cell surface and internal structures and regulating the expression of PmCNGC (Na+ uptake), PmNHX (Na+ sequestration), and PmSOS1 (Na+ extrusion). Moreover, the genotype mediated the differences in the rhizospheric microbial community. The ST 47 rhizosphere had a stronger and more stable fungal composition under saline conditions compared to SS 212. In addition, ST 47 reshaped the microorganisms in the rhizosphere by recruiting specific beneficial microbes, namely Haliangium, Marispirillum, RB41, and Saccharospirillum bacteria, which promote soil nutrient cycling, and Acremonium, Blastobotrys, Calostoma, Chaetomium, Chrysosporium, Fusarium, and Scytalidium fungi, which are involved in stress tolerance and resource uptake.

Conclusion

The findings of this study provide an empirical basis for improving crop performance through utilizing a key salt-tolerance mechanism and soil microbial management practices for sustainable agriculture in salinized soil.

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
Fig. 9

Similar content being viewed by others

Data availability

The data that supports the findings of this study are available in the supplementary material of this article.

References

Download references

Acknowledgements

This work was financially supported by the Minor Grain Crops Research and Development System of Shaanxi Province (NYKJ-2021-YL [XN] 40) and the China Agriculture Research System (CARS-06-A26).

Author information

Authors and Affiliations

Authors

Contributions

Yuhao Yuan: Methodology, Formal analysis, Visualization, Writing-original draft. Jiang Li: Investigation, Data curation, Writing-review & editing. Miaomiao Zhang: Conceptualization, Resources. Qinghua Yang: Validation, Writing-review & editing. Baili Feng: Supervision, Funding acquisition.

Corresponding authors

Correspondence to Qinghua Yang or Baili Feng.

Ethics declarations

Competing interest

The authors declare that they have no competing financial interests or personal relationships that could affect the work described in this article.

Additional information

Responsible Editor: Janusz J. Zwiazek.

Publisher's note

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

Supplementary Information

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

Yuan, Y., Li, J., Zhang, M. et al. Broomcorn millet (Panicum miliaceum L.) tolerates soil salinity by regulating salt-tolerance mechanism and reshaping rhizosphere microorganisms. Plant Soil 492, 261–284 (2023). https://doi.org/10.1007/s11104-023-06170-9

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11104-023-06170-9

Keywords

Navigation