Skip to main content
Log in

Application of wheat straw enhanced phenanthrene biodegradation in aged PHE-contaminated paddy soil

  • Soils, Sec 1 • Soil Organic Matter Dynamics and Nutrient Cycling • Research Article
  • Published:
Journal of Soils and Sediments Aims and scope Submit manuscript

Abstract

Purpose

As a common conservation tillage technology, crop straw returning could not only increase soil nutrients and improve soil structure, but also has been utilized for remedying PAHs-contaminated upland soil. However, the influence and the related mechanisms of wheat straw on the removal of PAHs in paddy soil are still unclear.

Materials and methods

An incubation experiment used wheat straw (20 g kg−1, S), middle (200 mg kg−1) and/or high (800 mg kg−1) level of urea-N (N1 and N2), and 3, 4-dimethylpyrazole phosphate (80 mg kg−1, DMPP) was conducted to investigate the effects of wheat straw on phenanthrene (PHE) degradation in paddy soil. Dissolved organic carbon (DOC), NO3, NH4+, denitrification activity (DEA), hydroxylamine reductase (Hyr), bacterial community, and function genes were determined to investigate the mechanisms of PHE degradation.

Results

PHE concentration in paddy soil was significantly (p < 0.05) decreased by 4-40%, but DOC concentration was significantly (p < 0.05) increased under S, SN1, SN2, SD, SN1D, and SN2D after 63 days of incubation. DOC was positively (p < 0.01) associated with PHE concentration in drowned water, indicating that DOC increased PHE bioavailability in paddy soil. S, SN1, and SN2 increased NO3 concentration, and the activity of DEA and Hyr, which was positively (p < 0.01) associated with the removal rate of PHE. Wheat straw significantly changed the bacterial community and increased the abundance of PHE degrader (Ruminiclostridium, Christensenellaceae_R-7_group, Christensenellaceae_unclassified, and Bacteroidetes_vadinHA17_unclassified) and PHE biodegradation function genes (norB, nosZ, nrfA, and bamA). DMPP increased the abundance of PHE degraders and PHE degradation genes.

Conclusions

Wheat straw application enhanced PHE biodegradation in paddy soil via promoting NO3 reduction as well as increasing PHE bioavailability and the abundance of PHE degraders and PHE degradation genes. The present results provided a new strategy for PAHs removal in paddy soil, guaranteeing agricultural production safety.

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

Similar content being viewed by others

Data availability

The data that support the findings of this study are available from the corresponding author upon reasonable request.

References

Download references

Acknowledgements

The authors thank the anonymous reviewers for valuable comments.

Funding

This work was supported by the financial support from National Natural Science Foundation of China (42077325; 41571456) and Natural Science Basic Research Program of Shaanxi (Program No. 2023-JC-ZD-17).

Author information

Authors and Affiliations

Authors

Contributions

Jun Cai: Methodology, Investigation, Software, Data curation, Formal analysis, Writing-original draft. Jinfeng Wang: Methodology, Investigation, Data curation, Formal analysis, Writing-original draft. Xiangyao Wu: Data curation. Zhuohang Jin: Investigation. Chuangye Zhang: Investigation. Benhua Sun: Methodology, Investigation and Data curation. Fuyong Wu: Conceptualization, Methodology, Resources, Supervision, Funding acquisition, Project administration, Writing-review and editing.

Corresponding author

Correspondence to Fuyong Wu.

Ethics declarations

Competing interests

The authors declare no competing interests.

Additional information

Responsible editor: Zhihong Xu

Publisher's Note

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

Supplementary Information

Below is the link to the electronic supplementary material.

Supplementary file1 (DOCX 139 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

Cai, J., Wang, J., Wu, X. et al. Application of wheat straw enhanced phenanthrene biodegradation in aged PHE-contaminated paddy soil. J Soils Sediments 23, 2685–2699 (2023). https://doi.org/10.1007/s11368-023-03501-2

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11368-023-03501-2

Keywords

Navigation